This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles

for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Designation: A999/A999M − 18

Standard Specification for

General Requirements for Alloy and Stainless Steel Pipe1
This standard is issued under the fixed designation A999/A999M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.

1. Scope* Single- or Double-Welded Austenitic Stainless Steel Pipe A813/A813M

Cold-Worked Welded Austenitic Stainless Steel Pipe A814/A814M
1.1 This specification2 covers a group of general require- Centrifugally Cast Ferritic/Austenitic Stainless Steel Pipe A872/A872M
ments that, unless otherwise specified in an individual for Corrosive Environments
specification, shall apply to the ASTM product specifications Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric A928/A928M
D
Fusion Welded with Addition of Filler Metal
noted below. Spray-Formed Seamless Austenitic Stainless Steel Pipes A943/A943M
Spray-Formed Seamless Ferritic/Austenitic Stainless Steel A949/A949M
1.2 In the case of conflict between a requirement of a Pipe
product specification and a requirement of this specification, Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless A954
the product specification shall prevail. In the case of conflict and Welded Pipe
between a requirement of the product specification or a 1.3 The values stated in either SI units or inch-pound units
requirement of this specification and a more stringent require- are to be regarded separately as standard. Within the text, the
ment of the purchase order, the purchase order shall prevail. SI units are shown in brackets. The values stated in each
Title of Specification ASTM Desig- system may not be exact equivalents; therefore, each system
nation3 shall be used independently of the other. Combining values
Seamless, Welded, and Heavily Cold Worked Austenitic A312/A312M
from the two systems may result in non-conformance with the
Stainless Steel Pipes standard. The inch-pound units apply unless the “M” designa-
Seamless and Welded Steel Pipe for Low-Temperature A333/A333M tion (SI) of the product specification is specified in the order.
Service and Other Applications with Required Notch
ra
Toughness NOTE 1—The dimensionless designator NPS (nominal pipe size) is used
Seamless Ferritic Alloy-Steel Pipe for High Temperature A335/A335M in this standard for such traditional terms as “nominal diameter,” “size,”
Service “nominal bore,” and “nominal size.”
Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless A358/A358M
Steel Pipe for High-Temperature Service and General 1.4 The following precautionary statement pertains only to
Applications the test method portion, Section 22, of this specification: This
Carbon and Ferritic Alloy Steel Forged and Bored Pipe for A369/A369M
High-Temperature Service standard does not purport to address all of the safety concerns,
Seamless Austenitic Steel Pipe for High-Temperature A376/A376M if any, associated with its use. It is the responsibility of the user
Service of this standard to establish appropriate safety, health, and
Welded Large Diameter Austenitic Steel Pipe for Corrosive A409/A409M
or High-Temperature Service environmental practices and determine the applicability of
Centrifugally Cast Ferritic Alloy Steel Pipe for A426/A426M regulatory limitations prior to use.
High-Temperature Service 1.5 This international standard was developed in accor-
Centrifugally Cast Austenitic Steel Pipe for High- A451/A451M
Temperature Service dance with internationally recognized principles on standard-
Centrifugally Cast Iron-Chromium-Nickel High-Alloy A608/A608M ization established in the Decision on Principles for the
Tubing for Pressure Application at High Development of International Standards, Guides and Recom-
Temperatures
Welded, Unannealed Austenitic Stainless Steel Tubular A778/A778M mendations issued by the World Trade Organization Technical
Products Barriers to Trade (TBT) Committee.
Seamless and Welded Ferritic/Austenitic A790/A790M
ft
Stainless Steel Pipe
2. Referenced Documents
2.1 ASTM Standards:4
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, A312/A312M Specification for Seamless, Welded, and
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Heavily Cold Worked Austenitic Stainless Steel Pipes
A01.10 on Stainless and Alloy Steel Tubular Products. A333/A333M Specification for Seamless and Welded Steel
Current edition approved March 1, 2018. Published March 2018. Originally
approved in 1998. Last previous edition approved in 2017 as A999/A999M – 17.
DOI: 10.1520/A0999_A0999M-18.
2 4
For ASME Boiler and Pressure Vessel Code applications see related Specifi- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cation SA 999 in Section II of that Code. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
These designations refer to the latest issue of the respective specifications. See Standards volume information, refer to the standard’s Document Summary page on
Annual Book of ASTM Standards, Vol 01.01. the ASTM website.

*A Summary of Changes section appears at the end of this standard

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 A999/A999M − 18
Pipe for Low-Temperature Service and Other Applications D3951 Practice for Commercial Packaging
with Required Notch Toughness E29 Practice for Using Significant Digits in Test Data to
A335/A335M Specification for Seamless Ferritic Alloy- Determine Conformance with Specifications
Steel Pipe for High-Temperature Service E213 Practice for Ultrasonic Testing of Metal Pipe and
A358/A358M Specification for Electric-Fusion-Welded Tubing
Austenitic Chromium-Nickel Stainless Steel Pipe for E273 Practice for Ultrasonic Testing of the Weld Zone of
High-Temperature Service and General Applications Welded Pipe and Tubing
A369/A369M Specification for Carbon and Ferritic Alloy E309 Practice for Eddy Current Examination of Steel Tubu-
Steel Forged and Bored Pipe for High-Temperature Ser- lar Products Using Magnetic Saturation
vice E426 Practice for Electromagnetic (Eddy Current) Examina-
A370 Test Methods and Definitions for Mechanical Testing tion of Seamless and Welded Tubular Products, Titanium,
of Steel Products Austenitic Stainless Steel and Similar Alloys
A376/A376M Specification for Seamless Austenitic Steel E570 Practice for Flux Leakage Examination of Ferromag-
Pipe for High-Temperature Service netic Steel Tubular Products
A409/A409M Specification for Welded Large Diameter 2.2 ANSI Standards:
Austenitic Steel Pipe for Corrosive or High-Temperature B36.10 Welded and Seamless Wrought Steel Pipe6
D
Service B36.19 Stainless Steel Pipe6
A426/A426M Specification for Centrifugally Cast Ferritic 2.3 Military Standards:
Alloy Steel Pipe for High-Temperature Service MIL-STD-163 Steel Mill Products, Preparation for Ship-
A451/A451M Specification for Centrifugally Cast Auste- ment and Storage7
nitic Steel Pipe for High-Temperature Service MIL-STD-271 Nondestructive Testing Requirements for
A608/A608M Specification for Centrifugally Cast Iron- Metals7
Chromium-Nickel High-Alloy Tubing for Pressure Appli- MIL-STD-792 Identification Marking Requirements for
cation at High Temperatures Special Purpose Equipment7
A700 Guide for Packaging, Marking, and Loading Methods 2.4 Federal Standard:
for Steel Products for Shipment Fed. Std. No. 183 Continuous Identification Marking of Iron
A751 Test Methods, Practices, and Terminology for Chemi- and Steel Products7
cal Analysis of Steel Products 2.5 Steel Structures Painting Council:
A778/A778M Specification for Welded, Unannealed Auste- SSPC-SP6 Surface Preparation Specification No. 6 Com-
ra
nitic Stainless Steel Tubular Products mercial Blast Cleaning8
A790/A790M Specification for Seamless and Welded 2.6 ASNT Standards:
Ferritic/Austenitic Stainless Steel Pipe SNT-TC-1A Recommended Practice for Personnel Qualifi-
A813/A813M Specification for Single- or Double-Welded cation and Certification in Nondestructive Testing9
Austenitic Stainless Steel Pipe
A814/A814M Specification for Cold-Worked Welded Aus- 3. Materials and Manufacture
tenitic Stainless Steel Pipe 3.1 The steel shall be made by a suitable steelmaking
A872/A872M Specification for Centrifugally Cast Ferritic/ process.
Austenitic Stainless Steel Pipe for Corrosive Environ-
ments 3.2 If secondary melting, such as electroslag remelting or
A928/A928M Specification for Ferritic/Austenitic (Duplex) vacuum remelting, is used, the heat shall be defined as all of the
Stainless Steel Pipe Electric Fusion Welded with Addition ingots remelted from a single primary heat.
of Filler Metal 3.3 If steels of different grades are sequentially strand cast,
A941 Terminology Relating to Steel, Stainless Steel, Related the resultant transition material shall be removed using an
Alloys, and Ferroalloys established procedure that positively separates the grades.
A943/A943M Specification for Spray-Formed Seamless 3.4 If a specific type of melting is required by the purchaser,
ft
Austenitic Stainless Steel Pipes it shall be specified in the purchase order.
A949/A949M Specification for Spray-Formed Seamless
Ferritic/Austenitic Stainless Steel Pipe 4. Terminology
A954 Specification for Austenitic Chromium-Nickel-Silicon 4.1 Definitions:
Alloy Steel Seamless and Welded Pipe (Withdrawn 2005)5
A994 Guide for Editorial Procedures and Form of Product
6
Specifications for Steel, Stainless Steel, and Related Portions of these standards appear in ASTM Book of Standards, Vol 01.01. Full
text of these standards is available from American National Standards Institute
Alloys (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
A1058 Test Methods for Mechanical Testing of Steel 7
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
Products—Metric Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
dodssp.daps.dla.mil.
8
Available from Steel Structures Painting Council, 4400 Fifth Ave., Pittsburgh,
PA 15213.
5 9
The last approved version of this historical standard is referenced on Available from American Society for Nondestructive Testing (ASNT), P.O. Box
www.astm.org. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.

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 A999/A999M − 18
4.1.1 The definitions in Terminology A941, except as modi- 7. Mechanical Properties
fied in this specification or in its referenced product
7.1 Method of Mechanical Tests—The specimens and me-
specifications, are applicable to this specification.
chanical tests required shall be in accordance with Test
Methods and Definitions A370, especially Annex A2 thereof,
5. Ordering Information or Test Methods A1058.
5.1 It is the responsibility of the purchaser to specify all 7.1.1 Unless otherwise specified in the ordering
requirements that are necessary for products ordered under the requirements, Test Methods A1058 shall apply when the metric
applicable product specification and this general requirements version of the product specification is specified.
specification. Such requirements to be considered include, but
7.2 Specimens shall be tested at room temperature.
are not limited to, the following:
5.1.1 ASTM product specification and year-date, 7.3 Small or subsize specimens as described in Test Meth-
5.1.2 Name of product (for example, stainless steel pipe), ods and Definitions A370 or Test Methods A1058 may be used
only when there is insufficient material to prepare one of the
5.1.3 Quantity (feet, metres, or number of pieces),
standard specimens. When using small or subsize specimens,
5.1.4 Method of manufacture, where applicable (seamless the largest one possible shall be used.
or welded),
D
5.1.5 Specific type of melting, if required (see 3.4), 8. Tensile Requirements
5.1.6 Grade or UNS number,
8.1 The material shall conform to the requirements as to
5.1.7 Size (NPS and outside diameter and schedule number,
tensile properties in the applicable product specification.
average (nominal) wall thickness (see 9.1 and 10.1), or
minimum wall thickness (see 9.2 and 10.1.1), or minimum 8.2 The yield strength, if specified, shall be determined
inside diameter (see 11.1)), corresponding to a permanent offset of 0.2 % of the gauge
5.1.8 Length (specific or random), length or to a total extension of 0.5 % of the gauge length under
5.1.9 End finish, load.
5.1.10 Optional requirements, 8.3 If the percentage of elongation of any test specimen is
5.1.11 Specification designation and year of issue, and less than that specified and any part of the fracture is more than
3⁄4 in. [19.0 mm] from the center of the gauge length, as
5.1.12 Special requirements or any supplementary
requirements, or both. indicated by scribe marks on the specimen before testing, a
ra
retest shall be allowed.
6. Chemical Composition
9. Permissible Variation in Mass for Seamless Pipe
6.1 Chemical Analysis—Samples for chemical analysis and
method of analysis shall be in accordance with Test Methods, 9.1 Except as allowed by 9.2, the mass of any length of
Practices, and Terminology A751. seamless pipe in sizes NPS 12 and smaller shall not vary more
than 10 % over or more than 3.5 % under that specified. For
6.2 Heat Analysis—An analysis of each heat of steel shall be pipe in sizes larger than NPS 12, the mass of any length of pipe
made by the steel manufacturer to determine the percentages of shall not vary more than 10 % over or more than 5 % under that
the specified elements. If secondary melting processes are specified. Unless otherwise specified, the mass of lengths of
employed, the heat analysis shall be obtained from one pipe in sizes NPS 4 and smaller shall be determined separately
remelted ingot or the product of one remelted ingot of each or in convenient lots; the mass of lengths of pipe in sizes larger
primary melt. The chemical composition thus determined, or than NPS 4 shall be determined separately.
that determined from a product analysis made by the tubular
product manufacturer shall conform to the requirements speci- 9.2 Minimum Wall—If the wall thickness of the pipe is
fied. specified as minimum wall in the purchase order, the mass of
any length of seamless pipe shall not vary more than 16 % over
6.2.1 For steels ordered under product specifications refer-
ft
that calculated in accordance with 14.3. Unless otherwise
encing this specification of general requirements, the steel shall
specified, the mass of pipe in sizes NPS 4 and smaller shall be
not contain an unspecified element, other than nitrogen for
determined separately or in convenient lots; the mass of pipe in
stainless steels, for the ordered grade to the extent that the steel
sizes larger than NPS 4 shall be determined separately.
conforms to the requirements of another grade for which that
element is a specified element having a required minimum 9.3 The specified mass of pipe shall be determined by
content. For this requirement, a grade is defined as an alloy multiplying its specified or calculated mass per unit length (see
described individually and identified by its own UNS designa- 14.3) by its measured length.
tion in a table of chemical requirements within any specifica-
tion listed within the scope as being covered by this specifi- 10. Permissible Variations in Wall Thickness
cation.
10.1 Seamless and Welded—Except as required by 10.1.1,
6.3 Product Analysis—Product analysis requirements and the minimum wall thickness at any point shall not be more than
options, if any, shall be as contained in the applicable product 12.5 % under the nominal wall thickness specified. The mini-
specification. mum wall thickness on inspection is shown in Table X1.1.

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 A999/A999M − 18
10.1.1 Minimum Wall—If the wall thickness of the pipe is 13.3 For pipe ordered to random lengths, the lengths and
specified as minimum wall in the purchase order, there shall be variations shall be agreed upon between the manufacturer and
no variation under the specified wall thickness. purchaser.
10.2 Forged and Bored—The wall thickness shall not vary 13.4 No girth welds are permitted unless agreed upon by the
over that specified by more than 1⁄8 in. [3.2 mm]. There shall be manufacturer and purchaser.
no variation under the specified wall thickness.
14. Mass per Unit Length
10.3 Cast—The wall thickness shall not vary over that
14.1 A system of standard pipe sizes has been approved by
specified by more than 1⁄16 in. [1.6 mm]. There shall be no
the American National Standards Institute as ANSI B36.10 and
variation under the specified wall thickness.
B36.19. The standard sizes do not prohibit the production and
11. Permissible Variations in Inside Diameter use of other sizes of pipe produced to the various product
specifications referenced in 1.1. (See Note 3.)
11.1 Forged and Bored, and Cast—The inside diameter
shall not vary under that specified by more than 1⁄16 in. [1.6 14.2 For nonstandard sizes of pipe, the calculated mass per
mm]. There shall be no variation over the specified inside unit length shall be determined using the following equation:
diameter. M 5 C~D 2 t!t (1)
D
12. Permissible Variation in Outside Diameter where:
12.1 Variations in outside diameter, unless otherwise agreed C = 10.69 [0.0246615],
upon, shall not exceed the limits given in Table 1. The M = mass per unit length, lbm/ft [kg/m],
tolerances for outside diameter include ovality, except as D = specified or calculated (from specified inside diameter
provided for in 12.2 and 12.2.1. (See Note 2.) and wall thickness) outside diameter, in. [mm], and
t = specified wall thickness, in. (to 3 decimal places) [mm
12.2 For thin-wall pipe, defined as pipe having a wall to 2 decimal places].
thickness of 3 % or less of the specified outside diameter, the
diameter tolerance of Table 1 is applicable only to the mean of 14.3 When minimum wall thickness is specified in the
the extreme (maximum and minimum) outside diameter read- purchase order, the calculated mass per unit length shall be
ings in any one cross-section. determined using Eq 1, obtaining from Table X1.1 the nominal
12.2.1 For thin-wall pipe, the difference in extreme outside wall thickness, t, corresponding to that minimum wall.
readings (ovality) in any one cross-section shall not exceed NOTE 3—The mass per unit length values given in the American
ra
1.5 % of the specified outside diameter. National Standards and the calculated masses per unit length determined
using Eq 1 are based upon carbon steel pipe. The mass per unit length of
NOTE 2—Thin-wall pipe usually develops significant ovality (out-of- pipe made of ferritic stainless steels may be up to about 5 % less, and that
roundness) during final annealing, straightening, or both. The diameter made of austenitic stainless steel up to about 2 % greater, than the values
tolerances given in Table 1 are usually not sufficient to provide for given.
additional ovality expected in thin-wall pipe.
15. Ends
13. Permissible Variations in Length
15.1 Unless otherwise specified, the pipe shall be furnished
13.1 Seamless and Welded (No Filler Metal Added)—If with plain ends. All burrs at the ends of the pipe shall be
specific cut lengths of 24 ft [7.3 m] or less are ordered, no removed.
length of pipe shall be under the length specified or more than
1⁄4 in. [6 mm] over that specified. 16. Straightness
13.1.1 Permissible variations in length for lengths greater 16.1 The finished pipe shall be reasonably straight.
than 24 ft [7.3 m] shall be subject to agreement between the 16.2 For metal-arc welded pipe, the maximum deviation
manufacturer and purchaser. from a 10-ft [3.0-m] straightedge placed so that both ends are
13.2 Forged and Bored, Cast, and Cast Cold-Wrought—If in contact with the pipe shall be 1⁄8 in. [3.2 mm]. For metal-arc
specific cut lengths are ordered, no length of pipe shall be welded pipe with lengths shorter than 10 ft [3.0 m], this
ft
under the length specified or more than 1⁄8 in. [3 mm] over that maximum deviation shall be prorated with respect to the ratio
specified. of the actual length to 10 ft [3.0 m].

TABLE 1 Permissible Variations in Outside Diameter

NPS Permissible Variations in Outside Diameter DN Designator Permissible Variations in Outside
Designator Diameter
Over Under Over Under
in. in. [mm] [mm]
1⁄8 –11⁄2, incl 1⁄64 (0.015) 1⁄32 (0.031) [6–40], incl [0.4] [0.8]
Over 11⁄2 to 4, incl 1⁄32 (0.031) 1⁄32 (0.031) Over [40 to 100] [0.8] [0.8]
Over 4 to 8, incl 1⁄16 (0.062) 1⁄32 (0.031) Over [100 to 200] [1.6] [0.8]
Over 8 to 18, incl 3⁄32 (0.093) 1⁄32 (0.031) Over [200 to 450] [2.4] [0.8]
Over 18 to 26, incl 1⁄8 (0.125) 1⁄32 (0.031) Over [450 to 650] [3.2] [0.8]
Over 26 to 34, incl 5⁄32 (0.156) 1⁄32 (0.031) Over [650 to 850] [4.0] [0.8]
Over 34 to 48, incl 3⁄16 (0.187) 1⁄32 (0.031) Over [850 to 1200] [4.8] [0.8]

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 A999/A999M − 18
17. Repair by Welding H 5 ~ 1 1 e ! t⁄ ~ e 1 t ⁄ D ! (2)
17.1 Repair by welding of defects in seamless pipe (includ- where:
ing centrifugally cast pipe and forged and bored pipe) and of H = distance between flattening plates, in. [mm],
plate defects in welded pipe and, if specifically stated by the t = specified wall thickness, in. [mm],
applicable product specification, weld seam defects in welded D = specified outside diameter, outside diameter correspond-
pipe shall be permitted subject to the approval of the purchaser ing to specified ANSI pipe size, or outside diameter
and with the further understanding that the composition of the calculated by adding 2t (as defined above) to the
deposited filler metal shall be suitable for the composition specified inside diameter in. [mm], and
being welded. Defects shall be thoroughly chipped or ground e = deformation per unit length (constant for a given grade
out before welding and each repaired length shall be reheat of steel, 0.07 for medium carbon steel (maximum
treated or stress relieved as required by the applicable product specified carbon 0.19 % or greater), 0.08 for ferritic
specification. Each length of repaired pipe shall be nondestruc- alloy steel, 0.09 for austenitic steel, 0.09 for duplex
tively tested as required by the applicable product specifica- (ferritic/austenitic) stainless steel, and 0.09 for low-
tion. carbon steel (maximum specified carbon 0.18 % or
17.2 Repair welding shall be performed using procedures less)).
D
and welders or welding operators that have been qualified in During the second step, which is a test for soundness, the
accordance with the ASME Boiler and Pressure Vessel Code, flattening shall be continued until the specimen breaks or the
Section IX. opposite walls of the specimen meet.
18. Retests 21.2 Welded Pipe—A section of welded pipe not less than 4
in. [100 mm] in length shall be flattened cold between parallel
18.1 If the results of the qualification tests of any lot do not
plates in two steps. The weld shall be placed at 90° from the
conform to the requirements specified in the applicable product
direction of the applied force (at the point of maximum
specification, retests are permitted on additional lengths of pipe
bending). During the first step, which is a test for ductility, no
of double the original number from the same lot, each of which
cracks or breaks on the inside or outside surfaces, except as
shall conform to the requirements specified. Only one retest of
provided for in 21.3.4, shall occur before the distance between
any lot is permitted. Nonconformance of the retest is cause for
the plates is less than the value of H calculated by Eq 2. During
the rejection of the lot.
the second step, which is a test for soundness, the flattening
18.2 Any individual length of pipe that meets the test shall be continued until the specimen breaks or the opposite
ra
requirements is acceptable. It is permitted to retest individual walls of the specimen meet.
lengths that do not conform to the test requirements, provided
21.3 Seamless, Centrifugally Cast, and Welded Pipe:
that the reason for nonconformance is established and the
nonconforming portion is removed. 21.3.1 Evidence of laminated or defective material or weld
that is revealed at any time during the entire flattening test shall
19. Retreatment be cause for rejection.
19.1 If individual lengths of pipe selected to represent any 21.3.2 Surface imperfections not evident in the test speci-
lot fail to conform to the test requirements, the lot represented men before flattening, but revealed during the first step of the
may be reheat treated and resubmitted for test. The manufac- flattening test, shall be judged in accordance with the finish
turer may reheat treat the pipe, but not more than twice, except requirements.
with the approval of the purchaser. 21.3.3 Superficial ruptures resulting from surface imperfec-
tions shall not be a cause for rejection.
20. Test Specimens 21.3.4 When low D-to-t ratio tubular products are tested,
20.1 Test specimens shall be taken from the ends of finished because the strain imposed due to geometry is unreasonably
pipe prior to any forming operations, or being cut to length. high on the inside surface at the six and twelve o’clock
locations, cracks at these locations shall not be cause for
20.2 Specimens cut either longitudinally or transversely
ft
rejection if the D-to-t ratio is less than 10.
shall be acceptable for the tension test.
20.3 If any test specimen shows flaws or defective 22. Nondestructive Test Requirements
machining, the specimen may be discarded and another sub-
22.1 If required by the applicable product specification or
stituted.
the purchase order, the pipe shall be tested by the hydrostatic
21. Flattening Test Requirements test (see 22.2) or by the nondestructive electric test (see 22.3).
21.1 Seamless and Centrifugally Cast Pipe—A section of 22.2 Hydrostatic Test:
pipe not less than 21⁄2 in. [60 mm] in length shall be flattened 22.2.1 Except as allowed by 22.2.2 and 22.2.3, each length
cold between parallel plates in two steps. During the first step, of pipe shall be tested by the manufacturer to a hydrostatic
which is a test for ductility, no cracks or breaks on the inside, pressure that will produce in the pipe wall a stress not less than
outside, or end surfaces, except as allowed by 21.3.4, shall 60 % of the specified minimum yield strength for ferritic alloy
occur before the distance between the plates is less than the steel and stainless steel pipe, or 50 % of the specified minimum
value of H calculated as follows: yield strength for austenitic alloy and stainless steel pipe and

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 A999/A999M − 18
for ferritic/austenitic stainless steel pipe. The test pressure or perfections. It should be recognized that different techniques
stress shall be determined using the following equation: should be used to detect differently oriented imperfections. The
P 5 2St⁄D or S 5 PD⁄2t (3) examination may not detect short deep imperfections.
22.3.2.3 The eddy-current testing (ET) referenced in this
where: specification, (see Practices E426 and E309), has the capability
P = hydrostatic test pressure in psi [MPa], of detecting significant imperfections, especially of the short
S = pipe wall stress in psi or [MPa], abrupt type. The sensitivity of this test decreases with wall
t = specified wall thickness, nominal wall thickness accord- thickness over 0.250 in. (6.4 mm).
ing to specified ANSI schedule number, or 1.143 times
22.3.2.4 The flux leakage examination referred to in this
the specified minimum wall thickness, in. [mm], and
D = specified outside diameter, outside diameter correspond- specification is capable of detecting the presence and location
ing to specified ANSI pipe size, or outside diameter of significant longitudinally or transversely oriented imperfec-
calculated by adding 2t (as defined above) to the tions; however, sensitivity of the test to various types of
specified inside diameter, in. [mm]. imperfections is affected by the calibration, and different
techniques should be employed to detect differently oriented
22.2.1.1 The hydrostatic test pressure determined by Eq 3 imperfections.
D
shall be rounded to the nearest 50 psi [0.5 MPa] for pressures
22.3.2.5 A purchaser interested in ascertaining the nature
below 1000 psi [7 MPa], and to the nearest 100 psi [1 MPa] for
(type, size, location, and orientation) of imperfections that can
pressures 1000 psi [7 MPa] and above. The hydrostatic test
be detected in the specific application of these examinations
may be performed prior to cutting to final length, or prior to
should discuss this with the manufacturer of the tubular
upsetting, swaging, expanding, bending, or other forming
product.
operations.
22.2.2 Regardless of pipe-wall stress-level determined by 22.3.3 Time of Examination:
Eq 3, the minimum hydrostatic test pressure required to satisfy 22.3.3.1 Nondestructive testing for specification acceptance
these requirements need not exceed 2500 psi [17.0 MPa] for shall be performed after all mechanical processing, heat
outside diameters (see D in 22.2) of 3.5 in. [88.9 mm] or less, treatments, and straightening operations. This requirement
or 2800 psi [19.0 MPa] for outside diameters over 3.5 in. [88.9 does not preclude additional testing at earlier stages in the
mm]. This does not prohibit testing at higher pressures at the processing.
option of the manufacturer or as allowed by 22.2.3. 22.3.4 Surface Condition:
22.2.3 With concurrence of the manufacturer, a minimum 22.3.4.1 All surfaces shall be free of scale, dirt, grease,
ra
hydrostatic test pressure in excess of the requirements of 22.1 paint, and other foreign material that could interfere with
or 22.2, or both, may be stated in the purchase order. interpretation of test results. The methods used for cleaning
22.2.4 The test pressure shall be held for a minimum of 5 s. and preparing the surfaces for examination shall not be
For welded pipe, the test pressure shall be held for a time detrimental to the base metal or the surface finish.
sufficient to permit the entire length of the welded seam to be 22.3.4.2 Excessive surface roughness or deep scratches can
inspected. produce signals that interfere with the test.
22.2.5 The hydrostatic test may not be capable of testing the 22.3.5 Extent of Examination:
end portion of the pipe. The length of pipe that cannot be tested
22.3.5.1 The relative motion of the pipe and the
shall be determined by the manufacturer and, if specified in the
transducer(s), coil(s), or sensor(s) shall be such that the entire
purchase order, reported to the purchaser.
pipe surface is scanned, except as allowed by 22.3.5.2.
22.3 Nondestructive Electric Test: 22.3.5.2 The existence of end effects is recognized, and the
22.3.1 Each pipe shall be examined with a nondestructive extent of such effects shall be determined by the manufacturer,
test in accordance with Practices E213, E309, E426, or E570. and, if requested, shall be reported to the purchaser. Other
Unless specifically called out by the purchaser, the selection of nondestructive tests may be applied to the end areas, subject to
the nondestructive electric test shall be at the option of the agreement between the purchaser and the manufacturer.
manufacturer. Upon agreement between the purchaser and the
ft
22.3.6 Operator Qualifications:
manufacturer, Practice E273 shall be employed in addition to
one of the full periphery tests. The range of pipe sizes that may 22.3.6.1 The test unit operator shall be qualified in accor-
be examined by each method shall be subject to the limitations dance with SNT-TC-1A, or an equivalent recognized and
in the scope of the respective practices. documented standard.
22.3.2 The following information is for the benefit of the 22.3.7 Test Conditions:
user of this specification: 22.3.7.1 For eddy-current testing, the excitation coil fre-
22.3.2.1 The reference discontinuities defined in 22.3.8.2 – quency shall be chosen to ensure adequate penetration yet
22.3.8.7 are convenient standards for the standardization of provide a good signal-to-noise ratio.
nondestructive testing equipment. The dimensions of such 22.3.7.2 The eddy-current coil frequency used shall not
reference discontinuities should not be construed as the mini- exceed the following:
mum size imperfection detectable by such equipment. On specified walls up to 0.050 in. [1.3 mm] - 100 kHz
22.3.2.2 The ultrasonic testing (UT) can be performed to On specified walls up to 0.150 in. [3.8 mm] - 50 kHz
detect both longitudinally and circumferentially oriented im- On specified walls equal to or greater than 0.150 in. [3.8 mm] - 10 kHz

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 A999/A999M − 18
22.3.7.3 Ultrasonic—For examination by the ultrasonic More frequent standardization may be performed at the manu-
method, the nominal transducer frequency shall be 2.00 MHz facturer’s option and may be required upon agreement between
or more and the nominal transducer size shall be 1.5 in. [38 the purchaser and the manufacturer.
mm] or less. 22.3.9.2 The test apparatus shall also be standardized after
22.3.7.4 If the equipment contains a reject notice filter any change in test system settings, change of operator, equip-
setting, this shall remain off during calibration and testing ment repair, or interruption due to power loss, process
unless linearity can be demonstrated at the setting. shutdown, or when a problem is suspected.
22.3.8 Reference Standards: 22.3.9.3 The reference standard shall be passed through the
22.3.8.1 Reference standards of convenient length shall be test apparatus at the same speed and test system settings as the
prepared from a length of pipe of the same grade, size (NPS, or pipe to be tested.
outside diameter and schedule or wall thickness), surface 22.3.9.4 The signal-to-noise ratio for the reference standard
finish, and heat treatment conditions as the pipe to be exam- shall be 21⁄2 to 1 or greater. Extraneous signals caused by
ined. identifiable causes such as dings, scratches, dents, straightener
22.3.8.2 For Ultrasonic Testing, the reference ID and OD marks, etc., shall not be considered noise. The rejection
notches shall be any one of the three common notch shapes amplitude shall be adjusted to be at least 50 % of full scale of
D
shown in Practice E213, at the option of the manufacturer. The the readout display.
depth of each notch shall not exceed 12.5 % of the specified 22.3.9.5 If upon any standardization, the rejection ampli-
wall thickness of the pipe or 0.004 in. [0.1 mm], whichever is tude has decreased by at least 29 % (3 dB) of peak height from
the greater. The width of the notch shall not exceed twice the the last standardization, the pipe tested since the last calibration
depth. Notches shall be placed on both the OD and ID surfaces. shall be rejected or retested for acceptance after the test
22.3.8.3 For Eddy-Current Testing, the reference standard apparatus settings have been changed, or the transducer(s),
shall contain, at the option of the manufacturer, any one of the coil(s), or sensor(s) have been adjusted, and the test apparatus
following reference discontinuities: has been restandardized.
22.3.8.4 Drilled Hole—The reference standard shall contain 22.3.10 Evaluation of Imperfections:
three or more holes, equally spaced circumferentially around 22.3.10.1 Pipes producing a signal equal to or greater than
the pipe and longitudinally separated by a sufficient distance to the lowest signal produced by the reference discontinuities
allow distinct identification of the signal from each hole. The shall be identified and separated from the acceptable pipes. The
holes shall be drilled radially and completely through the pipe area producing the signal may be reexamined.
wall, with care being taken to avoid distortion of the pipe while 22.3.10.2 Such pipes shall be rejected if the test signals
ra
drilling. One hole shall be drilled in the weld, if visible. were produced by imperfections that cannot be identified or
Alternatively, the manufacturer of welded pipe is permitted to were produced by cracks or crack-like imperfections. Such
drill one hole in the weld and run the calibration standard pipes may be repaired if such repair is permitted by the
through the test coils three times, with the weld turned at 120° applicable product specification. To be accepted, a repaired
on each pass. The hole diameter shall not exceed the following: pipe shall pass the same nondestructive test by which it was
NPS Designator Hole Diameter rejected, and it shall meet the minimum wall thickness require-
⁄
12 0.039 in. [1.0 mm] ments of the applicable product specification.
above 1⁄2 to 1 1⁄4 0.055 in. [1.4 mm] 22.3.10.3 If the test signals were produced by visual imper-
above 1 1⁄4 to 2 0.071 in. [1.8 mm]
above 2 to 5 0.087 in. [2.2 mm] fections such as scratches, surface roughness, dings, straight-
above 5 0.106 in. [2.7 mm] ener marks, cutting chips, steel die stamps, stop marks, or pipe
22.3.8.5 Transverse Tangential Notch—Using a round tool reducer ripple, the pipe is permitted to be accepted based upon
or a file with a 1⁄4-in. [6.4-mm] diameter, a notch shall be filed visual examination provided that the depth of the imperfection
or milled tangential to the surface and transverse to the is less than 0.004 in. [0.1 mm] or 12.5 % of the specified wall
longitudinal axis of the pipe. Such a notch shall have a depth thickness, whichever is the greater.
not exceeding 12.5 % of the specified wall thickness of the 22.3.10.4 Rejected pipe may be reconditioned and retested,
pipe or 0.004 in. [0.10 mm], whichever is the greater. provided that the wall thickness is not decreased to less than
ft
22.3.8.6 Longitudinal Notch—A notch of 0.031 in. [0.8 mm] that required by the applicable product specification. The
or less in width shall be machined in a radial plane parallel to outside diameter at the point of grinding may be reduced by the
the pipe axis on the outside surface of the pipe, to have a depth amount so removed. To be accepted, retested pipe shall meet
not exceeding 12.5 % of the specified wall thickness of the pipe the test requirement.
or 0.004 in. [0.10 mm], whichever is the greater. 22.3.10.5 If the imperfection is explored to the extent that it
22.3.8.7 More or smaller reference discontinuities, or both, can be identified as non-rejectable, the pipe may be accepted
may be used by agreement between the purchaser and the without further test provided that the imperfection does not
manufacturer. encroach on the minimum required wall thickness.
22.3.9 Standardization Procedure:
22.3.9.1 The test apparatus shall be standardized at the 23. Inspection
beginning and end of each series of pipes of the same size 23.1 The inspector representing the purchaser shall have
(NPS or diameter and schedule or wall thickness), grade and entry at all times work on the contract of the purchaser is being
heat treatment condition, and at intervals not exceeding 4 h. performed, to all parts of the manufacturer’s facilities that

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 A999/A999M − 18
concern the manufacture of the product ordered. The manufac- 25.4 The test report shall include a statement of explanation
turer shall afford the inspector all reasonable facilities to be for the letter added to the specification number marked on the
satisfied that the product is being furnished in accordance with tubes (see 26.5) if all of the requirements of the specification
this specification. All required tests and inspection shall be have not been completed. The purchaser must certify that all
made at the place of manufacture prior to shipment, unless requirements of the specification have been completed before
otherwise specified, and shall be conducted so as not to the removal of the letter (that is, X, Y, or Z).
interfere unnecessarily with the manufacturer’s operations. 25.5 A test report, certificate of compliance, or similar
document printed from or used in electronic form from an
24. Rejection electronic data interchange (EDI) shall be regarded as having
24.1 Each length of pipe received from the manufacturer the same validity as a counterpart printed in the certifying
may be inspected by the purchaser and, if it does not meet the organization’s facility. The content of the EDI transmitted
requirements of the specification based upon the inspection and document shall meet the requirements of the invoked ASTM
test method as outlined in the applicable product specification, standard(s) and conform to any existing EDI agreement be-
the length may be rejected and the manufacturer shall be tween the purchaser and the supplier. Notwithstanding the
notified. Disposition of rejected pipe shall be a matter of absence of a signature, the organization submitting the EDI
D
agreement between the manufacturer and the purchaser. transmission is responsible for its content.
24.2 Pipe that fails in any of the forming operations or in the
26. Product Marking
process of installation and is found to be defective shall be set
aside and the manufacturer shall be notified for mutual 26.1 Each length of pipe shall be legibly marked with the
evaluation of the suitability of the pipe. Disposition of such manufacturer’s name or brand, the specification number (year
pipe shall be matter for agreement. of issue not required) and grade. Marking shall begin approxi-
mately 12 in. [300 mm] from the end of each length of pipe.
25. Certification For pipe less than NPS 2 and pipe under 3 ft [1 m] in length,
the required information may be marked on a tag securely
25.1 The manufacturer or supplier shall furnish to the attached to the bundle or box in which the pipes are shipped.
purchaser a certificate of compliance stating that the product
was manufactured, sampled, tested, and inspected in accor- 26.2 When pipe marked as specified is rejected, the ASTM
dance with the specification, including year-date, the supple- designation shall be canceled.
mentary requirements, and any other requirements designated 26.3 For austenitic steel pipe, the marking paint or ink shall
ra
in the purchase order or contract, and has been found to meet not contain detrimental amounts of harmful metals, or metal
such requirements. A signature or notarization is not required; salts, such as zinc, lead, or copper, which cause corrosive
however, the document shall be dated and shall clearly identify attack on heating.
the organization submitting it.
26.4 Pipes that have been weld repaired in accordance with
25.1.1 Notwithstanding the absence of a signature or 17.1 shall be marked WR.
notarization, the certifying organization is responsible for the
contents of the document. 26.5 When it is specified that certain requirements of a
specification adopted by the ASME Boiler and Pressure Vessel
25.2 In addition to the certificate of compliance, the manu- Committee are to be completed by the purchaser upon receipt
facturer or supplier shall furnish to the purchaser a test report of the material, the manufacturer shall indicate that all require-
that includes the following information and test results, as ments of the specification have not been completed by a letter
applicable: such as X, Y, or Z, immediately following the specification
25.2.1 Heat number, number. This letter may be removed after completion of all
25.2.2 Heat analysis, requirements in accordance with the specification. An expla-
25.2.3 Product analysis if specified or required, nation of specification requirements to be completed is pro-
25.2.4 Tensile properties, vided in 25.1.
ft
25.2.5 Width in the gauge length, if longitudinal strip
tension test specimens were used, 27. Packaging, Marking, and Loading
25.2.6 Bend test acceptable, 27.1 If specified in the purchase order, packaging, marking,
25.2.7 Flattening test acceptable, and loading for shipment shall be in accordance with the
25.2.8 Hydrostatic test pressure, procedures of Practices A700.
25.2.9 Nondestructive electric test method,
25.2.10 Impact test results, and 28. Government Procurement
25.2.11 Other test results or information required to be 28.1 If specified in the contract or purchase order, the
reported by the applicable product specification. following requirements shall be considered in the inquiry,
25.3 Test results or information required to be reported by contract, or order for agencies of the U.S. Government where
supplementary requirements, or other requirements designated scale-free pipe is required. Such requirements shall take
in the purchase order or contract shall be reported but may be precedence if there is a conflict between these requirements
reported in a separate document. and those of the applicable product specification.

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 A999/A999M − 18
28.2 Pipe shall be ordered to nominal pipe size (NPS) and pickled or blast cleaned to a free of scale condition equivalent
schedule. Nominal pipe shall be as specified in ANSI B36.10 or to the CSa2 visual standard in SSPC-SP6. Cleaning shall be
B36.19. performed in accordance with a written procedure that has been
28.3 Responsibility for Inspection—Unless otherwise speci- shown to be effective. This procedure shall be available for
fied in the contract or purchase order, the manufacturer is audit.
responsible for the performance of all inspection and test 28.9 In addition to the marking required by this
requirements specified. The absence of any inspection require- specification, each length of pipe NPS 1⁄4 or larger shall be
ments in the specification shall not relieve the contractor of the marked, in accordance with FED-STD-183 and MIL-STD-792,
responsibility for ensuring that all products or supplies submit- with the nominal pipe size, schedule number, length, and heat
ted to the government for acceptance comply with all require- number or lot identification number.
ments of the contract or purchase order. Sampling inspection, 28.10 Pipe shall be straight to within the tolerance given in
as part of the manufacturing operations, is an acceptable Table 2.
practice to ascertain conformance to requirements; however,
this does not authorize submission of known defective 28.11 If specified, each pipe shall be ultrasonically exam-
material, either indicated or actual, nor does it commit the ined in accordance with MIL-STD-271, except that the notch
depth in the reference standard shall be 5 % of the wall
D
government to accept the material. Except as otherwise speci-
fied in the contract or purchase order, the manufacturer may thickness or 0.005 in. [0.1 mm], whichever is the greater. Any
use its own or any other suitable facilities for the performance pipe that produces an indication equal to or greater than 100 %
of the inspection and test requirements unless disapproved by of the indication from the reference discontinuity shall be
the purchaser at the time the order is placed. The purchaser rejected.
shall have the right to perform any of the inspections and tests 28.12 The pipe shall be free from repair welds, welded
set forth if such inspections and tests are deemed necessary to joints, laps, laminations, seams, visible cracks, tears, grooves,
ensure that the products conform to the prescribed require- slivers, pits, and other imperfections detrimental to the pipe as
ments. determined by visual and ultrasonic examination, or alternate
28.4 Sampling for Flattening and Flaring Test and for tests, as specified.
Visual and Dimensional Examination—Minimum sampling for 28.13 Pipe shall be uniform in quality and condition and
flattening and flaring tests and visual and dimensional exami- have a finish conforming to the best practice for standard
nation shall be as follows: quality pipe. Surface imperfections such as handling marks,
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Lot Size (Pieces per Lot) Sample Size straightening marks, light mandrel and die marks, shallow pits,
2 to 8 Entire Lot and scale pattern will not be considered defects if the imper-
9 to 90 8
91 to 150 12
fections are removable within the tolerances specified for wall
151 to 280 19 thickness or 0.005 in. [0.1 mm], whichever is the greater. The
281 to 500 21 bottom of imperfections shall be visible and the profile shall be
501 to 1200 27
1201 to 3200 35
rounded and faired-in.
3201 to 10 000 38 28.14 No weld repair by the manufacturer is permitted.
10 001 to 35 000 46
In all cases, the acceptance number is zero and the rejection 28.15 Preservation shall be level A or commercial, and
number is one. Rejected lots may be screened and resubmitted packing shall be level A, B, or commercial, as specified. Level
for visual and dimensional examination. All defective items A preservation and level A or B packing shall be in accordance
shall be replaced with acceptable items prior to lot acceptance. with MIL-STD-163 and commercial preservation and packing
shall be in accordance with Practices A700 or Practice D3951.
28.5 Sampling for Chemical Analysis—One sample for
chemical analysis shall be selected from each two pipes chosen 29. Keywords
from each lot. A lot shall be all material poured from one heat. 29.1 alloy steel pipe; austenitic stainless steel; duplex stain-
28.6 Sampling for Tension and Bend Test—One sample shall less steel; ferritic/austenitic stainless steel; seamless steel pipe;
ft
be taken from each lot. A lot shall consist of all pipe of the stainless steel pipe; steel pipe; welded steel pipe
same outside diameter and wall thickness manufactured during
an 8-h shift from the same heat of steel, and heat treated under TABLE 2 Straightness Tolerances
the same conditions of temperature and time in a single charge Maximum
Specified Wall Curvature in Maximum Curvature
in a batch-type furnace, or heat treated under the same Specified OD, in.A Thickness, in.A any 3 ft, in.A in Total Length, in.A
condition in a continuous furnace, and presented for inspection Up to 5.0, incl. Over 3 % OD to 0.030 0.010 × length, ft
at the same time. 0.5, incl.
Over 5.0 to 8.0, incl. Over 4 % OD to 0.045 0.015 × length, ft
28.7 Hydrostatic and Ultrasonic Tests—Each pipe shall be 0.75 incl.
tested by the ultrasonic (if specified) and hydrostatic tests. Over 8.0 to 12.75, incl. Over 4 % OD to 0.060 0.020 × length, ft
1.0, incl.
28.8 Pipe shall be free from heavy oxide or scale. The A
1 in. = 25.4 mm.
internal surface of hot finished ferritic steel pipe shall be

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 A999/A999M − 18

ANNEXES

(Mandatory Information)

A1. REQUIREMENTS FOR THE INTRODUCTION OF NEW MATERIALS

A1.1 New materials may be proposed for inclusion in a minimum of three test lots, as defined by the applicable
product specifications referencing this general requirements product specification, each from a different heat, shall be
specification subject to the following conditions: furnished.
A1.1.1 Application for the addition of a new grade to a A1.1.4 The application shall provide recommendations for
specification shall be made to the chair of the subcommittee all requirements appearing in the applicable product specifica-
that has jurisdiction over that specification. tion.
D
A1.1.2 The application shall be accompanied by a statement
from at least one user indicating that there is a need for the new A1.1.5 The application shall state whether the new grade is
grade to be included in the applicable product specification. covered by patent.
A1.1.3 The application shall be accompanied by test data as
required by the applicable product specification. Test data from

A2. REQUIREMENTS FOR THE INTRODUCTION OF MATERIALS FROM OTHER A01 OR B02.07 SPECIFICATIONS

A2.1 Wrought materials that are already covered by another A2.1.2 The chemical requirements, the specified mechani-
ra
A01 or B02.07 specification may be proposed for inclusion in cal properties, and the heat treatment requirements of the grade
specifications referencing this specification of general require- being added shall be the same as those for the grade in the A01
ments subject to the following conditions: or B02.07 specification in which the grade is presently covered.
A2.1.1 Application for the addition of a grade that is already A2.1.3 The application shall provide recommendations for
covered in another A01 or B02.07 specification shall be made all requirements appearing in the applicable specification.
to the chair of the subcommittee that has jurisdiction over that A2.1.4 The application shall state whether or not the grade
specification. is covered by patent.
ft
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 A999/A999M − 18

APPENDIX

(Nonmandatory Information)

X1. MINIMUM WALL THICKNESS ON INSPECTION FOR NOMINAL (AVERAGE) PIPE WALL THICKNESS

TABLE X1.1 Minimum Wall Thicknesses on Inspection for Nominal (Average) Pipe Wall Thicknesses

NOTE 1—The following equation, upon which this table is based, may be applied to calculate minimum wall thickness from nominal (average) wall
thickness:
tn × 0.875 = tm
D
where:
tn = nominal (average) wall thickness, in. [mm], and
tm = minimum wall thicknesses, in. [mm],
The wall thickness in inch-pound units is rounded to three decimal places in accordance with the rounding method of Practice E29. The wall thickness
in SI units is rounded to one decimal place in accordance with the rounding method of Practice E29.
NOTE 2—This table is a master table covering wall thicknesses available in the purchase of different classifications of pipe, but it is not meant to imply
that all of the walls listed herein are necessarily obtainable for the applicable product specification.
Nominal (Average) Minimum Thickness Nominal (Average) Minimum Thickness Nominal (Average) Minimum Thickness
Thickness on Inspection Thickness on Inspection Thickness on Inspection
(tn) (tm) (tn) (tm) (tn) (tm)
in. [mm] in. [mm] in. [mm] in. [mm] in. mm in. [mm]
0.068 [1.7] 0.060 [1.5] 0.294 [7.5] 0.257 [6.5] 0.750 [19.0] 0.658 [16.6]
0.068 [2.2] 0.077 [2.0] 0.300 [7.6] 0.262 [6.7] 0.812 [20.6] 0.710 [18.0]
0.091 [2.3] 0.080 [2.0] 0.307 [7.8] 0.269 [6.8] 0.843 [21.4] 0.736 [18.7]
0.095 [2.4] 0.083 [2.1] 0.308 [7.8] 0.270 [6.9] 0.854 [21.7] 0.756 [19.2]
ra
0.113 [2.9] 0.099 [2.5] 0.312 [7.9] 0.273 [6.9] 0.875 [22.2] 0.766 [19.5]
0.119 [3.0] 0.104 [2.6] 0.318 [8.1] 0.278 [7.1] 0.906 [23.0] 0.783 [20.1]
0.125 [3.2] 0.109 [2.8] 0.322 [8.2] 0.282 [7.2] 0.937 [23.8] 0.820 [20.8]
0.126 [3.2] 0.110 [2.8] 0.330 [8.4] 0.289 [7.3] 0.968 [24.6] 0.847 [21.5]
0.133 [3.4] 0.116 [2.9] 0.337 [8.6] 0.295 [7.5] 1.000 [25.4] 0.875 [22.2]
0.140 [3.6] 0.122 [3.1] 0.343 [8.7] 0.300 [7.6] 1.031 [26.2] 0.902 [22.9]
0.145 [3.7] 0.127 [3.2] 0.344 [8.7] 0.301 [7.6] 1.062 [27.0] 0.929 [23.6]
0.147 [3.7] 0.129 [3.3] 0.358 [9.1] 0.313 [8.0] 1.083 [27.8] 0.956 [24.3]
0.154 [3.9] 0.135 [3.4] 0.365 [9.3] 0.319 [8.1] 1.125 [28.6] 0.984 [25.0]
0.156 [4.0] 0.136 [3.5] 0.375 [9.5] 0.328 [8.3] 1.156 [29.4] 1.012 [25.7]
0.179 [4.5] 0.157 [4.0] 0.382 [9.7] 0.334 [8.5] 1.218 [30.9] 1.066 [27.1]
0.187 [4.7] 0.164 [4.2] 0.400 [10.2] 0.350 [8.9] 1.250 [31.8] 1.094 [27.8]
0.188 [4.8] 0.164 [4.2] 0.406 [10.3] 0.355 [9.0] 1.281 [32.5] 1.121 [28.5]
0.191 [4.9] 0.167 [4.2] 0.432 [10.4] 0.378 [9.6] 1.312 [33.3] 1.148 [29.2]
0.200 [5.1] 0.175 [4.4] 0.436 [11.1] 0.382 [9.7] 1.343 [34.1] 1.175 [29.8]
0.203 [5.2] 0.178 [4.5] 0.437 [11.1] 0.382 [9.7] 1.375 [34.9] 1.203 [30.6]
0.216 [5.5] 0.189 [4.8] 0.438 [11.1] 0.383 [9.7] 1.406 [35.7] 1.230 [31.2]
0.218 [5.5] 0.191 [4.9] 0.500 [12.7] 0.438 [11.1] 1.436 [36.5] 1.258 [32.0]
0.219 [5.6] 0.192 [4.9] 0.531 [13.5] 0.465 [11.8] 1.500 [36.1] 1.312 [33.3]
0.226 [5.7] 0.196 [5.0] 0.552 [14.0] 0.483 [12.3] 1.531 [38.9] 1.340 [34.0]
0.237 [6.0] 0.207 [5.2] 0.562 [14.3] 0.492 [12.5] 1.562 [39.7] 1.367 [34.7]
0.250 [6.4] 0.219 [5.6] 0.593 [15.1] 0.519 [13.2] 1.593 [40.5] 1.394 [35.4]
ft
0.258 [6.6] 0.226 [5.7] 0.600 [15.2] 0.525 [13.3] 1.750 [44.5] 1.531 [38.9]
0.276 [7.0] 0.242 [6.1] 0.625 [15.9] 0.547 [13.9] 1.781 [45.2] 1.558 [39.6]
0.277 [7.0] 0.242 [6.1] 0.656 [16.6] 0.573 [14.6] 1.812 [46.0] 1.586 [49.3]
0.279 [7.1] 0.244 [6.2] 0.674 [17.1] 0.590 [15.0] 1.968 [50.0] 1.772 [43.7]
0.280 [7.1] 0.245 [6.2] 0.687 [17.4] 0.601 [15.3] 2.062 [52.4] 1.804 [45.8]
0.281 [7.1] 0.246 [6.2] 0.719 [18.3] 0.629 [16.0] 2.343 [59.5] 2.050 [52.1]

SUMMARY OF CHANGES

Committee A01 has identified the location of selected changes to this specification since the last issue,
A999/A999M – 17, that may impact the use of this specification. (Approved March 1, 2018)

(1) Deleted 5.1.11 and renumbered subsequent sub-paragraphs.

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 A999/A999M − 18
(2) Revised 25.1 to mandate providing a certificate of compli- (3) Revised 25.2 to mandate providing a test report.
ance.

Committee A01 has identified the location of selected changes to this specification since the last issue,
A999/A999M–16, that may impact the use of this specification. (Approved Sept. 1, 2017)

(1) Revised the metric value of C in 14.2.

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D
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