Designation: A 961 - 01 An American National Standard

Standard Specification for

Common Requirements for Steel Flanges, Forged Fittings,
Valves, and Parts for Piping Applications1
This standard is isxued under the fixed designation A 9f› I: llic number immediale I*' foIlow'in the desi*nati‹›n indicates the ye.ir of
ori inal adoption or. in the case of rex'ision. lhe year of last revision. A number in parentheses indicates ihe year of lust rcapprovul. A
superscripi epsilon ie j indicates an editorial chang•e since the lasi revision or reapproval.

1. Scope
Combining values from the two systems may result in noncon-
1.1 This specification covers a group of common require- formance with the specification. The inch-pound units shall
ments that shall apply to steel flanges. forged fittings, valves. apply unless the “M” designation i SI) of the product specifi-
and paris for piping applications under any of the following cation is specified in the order.
individual product specifications:
2. Referenced Documents
Title of Specification ASTM Designation
2.1 ASTM Standard.s:
Forgings, Carbon Steel, for Piping Components A 105/A A 105/A 105M Specification for Carbon Steel Forgings for
Forgings, Carbon Steel, for General-Purpose Piping 105M A
Forged or Rolled Alloy-Steel Pipe Flanges, Forged 181/A 181M
Piping Applications'
Firings, and Valves anci PaM for High Temperature A 82/A 182M A 181/A 18 l M Specification for Carbon Steel Forgings for
Service General-Purpose Piping'
Forgings, Carbon and Low Alloy Steel, Requiring Notch
Toughness Testing for Piping Components A 350/A 350M
A 182/A l82M Specification for Forged or Rolled Alloy-
Forged or Rolled 8 and 9 % Nichel Alloy Steel Pipe Flanges, Forged Fittings, and Valves and Parts
Steel Flanges, Fittings, Valves, and Parts A 5Z2/A 522M for High-Temperature Service'
for Low-Temperature Service
Forgings, Carbon and Alloy Steel. for Pipe Flanges, A 275/A 275M Test Method for Magnetic Particle Exami-
Fittings, Valves, and Parts for High-Pressure A 694/A 694M nation of Steel Forgings'
Transmission Service A 350/A 350M Specification for Carbon and Low-Alloy
Flanges, Forged, Carbon and Alloy Steel for Low
Temperature Service A 707/A 707M Steel Forgings, Requiring Notch Toughness Testing for
Forgings. Carbon Steel, for Piping Components with Piping Components'
inherent Notch Toughness A 727/A 727M
Forgings. Titanium-Stabilized Carbon Steel, for
A 370 Test Methods and Definitions for Mechanical Testing
Glass-Lined Piping and Pressure Vessel Service A 836/A 836M of Steel Products'
A 522/A 522M Specification for Forged or Rolled 8 and
1 .2 In case of conflict between a requirement of the indi- 9 % Nickel Alloy Steel Flanges, Fittings, Valves, and
vidual product specification and a requirement of this general Parts for Low-Temperature Service'
requirement specification, the requirements of the individual A 694/A 694M Specification for Carbon and Alloy Steel
product specification shall prevail over those of this specifica- Forgings for Pipe Flanges, Fittings, Valves, and Parts for
tion. High-Pressure Transmission Service'
l .3 By mutual agreement between the purchaser and the A 700 Practices for Packaging. Marking. and Loading
supplier, additional requirements may be specified (see section Methods for Steel Products for Domestic Shipment"
4. 1.2). The acceptance of any such additional requirements A 707/A 707M Specification for Forged Carbon and Alloy
shall be dependent on negotiations with the supplier and must Steel Flanges for Low-Temperature Service'
be included in the order as agreed upon between the purchaser A 727/A 727M Specification for Carbon Steel Forgings. for
and supplier. Piping Components with Inherent Notch Toughness'
1.4 The values stated in either inch-pound units or SI units A 751 Test Methods, Practices, and Terminology for
(metric) are to be regarded separately as standard. Within the Chemical Analysis of Steel Products“
text and the tables, the SI units are shown in brackets. The A 836/A 836M Specification for Titanium-Stabilized Car-
values stated in each system are not exact equivalents; there- bon Steel Forgings for Glass-Lined Piping and Pressure
fore each system must be used independently of the other. Vessel Service'
A 941 Terminology Relating to Steel, Stainless Steel, Re-
lated Alloys, and Ferroalloys'
' This specification is under the jurisdiction of ASTM Committee A0l on Steel,
Stainless Steel. and Related Alloys and is the direct responsibility of Siibcorrtmittee
A0l.22 on Steel Forgings and Wrought Fitt mgs for Piping Applications and Bolting
Materials for Pipin8 and Special Purpose Applications. ‘" Annual Book of ASTM Standards, Vol 01.01.
Curmnt edition approved Mar. 10, 2001. Published May 2001. Originally ’ Annual Book of ASTM Standards, Vol 01.0.5.
published as A 96 1— 96. Last previous edii ion A 96 1 — 00b. Annual Book of ñSTlf Stauifards. Vol 01.03.

Copyright0 ASTM, too Barr naroor Drive, wes Conshohocken, PA 1942s-z959, United States.

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 t/$ A 961
A 967 Specification for Chemical Passivation Treatments
for Stainless Steel Parts“ purchase order all ordering information necessary to purchase
A 991/A 99 l M Test Method for Conducting Temperature the needed material. Examples of such information include, but
Uniformity Surveys of Furnaces Used to Heat Treat Steel are not limited to. the following:
Products“ 4.1.1 Quantity,
E 165 Test Method for Liquid Penetrant Examination’ 4.1.2 Size and pressure class or dimensions. (Tolerances
E 381 Method of Macroetch Testing Steel Bars. Billets, and surface finishes should be included.)
Blooms, and Forgings6 4.1.3 Specification number with grade or class. or both. as
E 709 Guide for Magnetic Particle Examination" applicable, and year/date.
E 1916 Guide for Identification and/or Segregation of 4.1.4 Supplementary requirements, and
Mixed Lots of Metals7 4.1.5 Additional requirements.
2.2 ASME Standard:’ 5. Melting Process
ASME Boiler and Pressure Vessel Code—Section IX 5.1 Unless otherwise specified in the individual Product
*-.3 Military Standard:’ Specification, the steel shall be fully killed.
MIL-STD- 163 Steel Mill Products, Preparation for Ship- 5.2 If a specihc type of melting is required by the purchaser.
ment and Storage it shall be stated on the purchase order.
2.4 Matlu Standardi.-.ation Society Statidat d:" 5.3 The primary melting may incorporate separate degas-
SP 25 Standard Marking System of Valves, Fittings. sing or refining and may be followed by secondary melting,
Flanges and Unions such as electroslag remelting or vacuum remelting. If second-
3. Terminology ary melting is employed. the heat shall be defined as all of the
ingot remelted from a single primary heat.
3.1 Definitions of Terms Specific to This Standard:
5.4 Steel may be cast in ingots or may be strand cast. When
3.1. I bar, ri—a solid rolled or forged section that is long in
steel of different grades is sequentially strand cast, identifica-
relationship to its cross sectional dimensions, with a relatively
tion of the resultant transition material is required. The steel
constant cross section throughout its length and a wrought
producer shall remove the transition material by an established
microstructure.
procedure that positively separates the grades.
3.1.2 certifyin g organ ig-atioii ri—the company or associa-
5.5 A sufficient discard shall be made from the source
tion responsible for the conformance of. and marking of, the
material to secure freedom from injurious porosity and shrink-
product to the specification requirements.
age. and undue segregation.
3.1.3 /rr‹n9, ri—a component for non-bolted joints in piping
systems. 6. Manufacture
3.1.4 flan ge, ri—a component for bolted joints used in 6.1 The finished part shall be manufactured from a forging
piping systems. that is as close as practicable to the finished size or shape.
3.1.5 or8iiig. ii—the product of a substantially compressive Alternative starting materials may be used, but with the
hot or cold plastic working operation that consolidates the following exceptions and requirements.
material and produces the required shape. 6.1.1 Bar—Flanges, elbows. return bends, tees, and header
3.1.5.1 Discussion—The plastic working must be per- tees shall not be machined directly from bar. Other hollow
formed by a forging machine, such as a hammer, press, or ring cylindrical shaped parts up to. and including, NPS 4 can be
rolling machine, and must deform the material to produce a machined from bar provided that the axial length of the part is
wrought structure throughout the material cross section. approximately parallel to the metal flow lines of ihe starting
3.1.6 seaitiless tuhiii g, ii—a tubular product made without a stock.
welded seam. 6. I.2 Seamless Tut›inp—Flanges shall not be machined
3.1.6.1 Discussioii—It is manufactured usually by hot directly from seamless tubing. Other hollow cylindrical shaped
working the material, and if necessary, by subsequently cold parts up to. and including, NPS 4 can be machined from
finishing the hot worked tubular product to produce the desired seamless tubing provided that the axial length of the pan is
shape, dimensions and properties. approximately parallel to the metal flow lines of the starring
3.2 Defii1ition.s—for definitions of other terms used in this stock.
specification. refer to Terminology A 941.
7. Heat Treatment
4. Ordering Information 7.1 Material requiring heat treatment shall be treated aS
4.1 lt is the purchaser's responsibility to specify in the specified in the individual product specification using the
following procedures that are defined in more detail in Termi-
Annual Book of ASTM Standards. Vol 03.03. nology A 941.
Attitual Book of ASTM Standards. Vol 03.01. 7.1.1 Full z4nirea/ing—Material shall be uniformly reheated
’ Annual BooL of ASTM Suwdurds. 'v/oI 03.06.
Available from the American Society of Mechanical Engineers. Three Park to a temperature above the transformation range and, after
Avenue. New York, NY 10016—3990. holding for a sufficient time at this temperature. cooled slowly
Available from Standardization D‹icuments Order Desk. B1d•. d. Section D, to a temperature below the transformation range.
700 Robbins Ax'e., Philadelphia, PA 19111 -.5094, Attn: NPODS.
7.1.2 Solution Annealing—Material shall be heated to a
' Available from the Manufacturer's Standardization Society of the Valve and
Fittings Industry. 1815 N. Fort Mvcr Dr., Arlington, VA 22209. temperature that causes the chrome carbides to go into solu-
tion, and then, quenched in water or rapidly cooled by other

COPYRIGHT 2001 American Society for Testing and Materials Information Handling Services, Fri Oct 19 20:10:53 2001
 A 961

means to prevent reprecipitation. TABLE 1 Product Analysis Tolerances for Higher Alloy and
stainless Steels“
7.1.3 Isothermal Anuea/iiig—Isothem1al annealing shall
consist of austenitizing a ferrous alloy. and then, cooling• to and
Element Limit or Maximum of Tolerance Over the
holding within the range of temperature at which the austertite Specified Range, Wt % Maximum Limit or
transforms to a relatively soft ferrite-carbide aggregate. Under the Minimum
7. 1.4 Norinali..tit $— Material shall be uniformly reheated to Limit

a temperature above the transformation range, and subse- Carbon 0.030, incl 0.005
over 0.030 to 0.20 incl. 0.01
quently. cooled in air at room temperature. Manganese to 1.00 incl. 0.03
7.1.5 Temperiit ff arid Post-Weld Heat Trentnieili—Material over 1.00 to 3.00 incl. 0.04
shall be reheated to the prescribed temperature below the ouer 3.00 tO 6.00 0.05
over 6.00 to 10.00 0.06
transformation range, held at temperature for the •preater of 30 Phosphorou to 0.040, incl. 0.005
min or 1 h/in. [25.4 mm) of thickness at the thickest section and s SuTtur to 0.030, incl. 0.005
cooled in still air. SillCOO to 1.00, incl. 0.05
over 1.00 to 5.00 incl. 0.10
7. 1.6 Stress Reliei*in g— Material shall be uniformly heated Chromium over 4.00 to 4 0.00 incl. 0.4 0
to the selected stress relieving temperature. The temperature over 10.00 to 15.00 incl. O.15
shall not vary from the selected temperature by more ñthan over 15.00 to 20.00 incl. 0.20
over 2O.O0 to 27.50 incl. 0.25
25°F [ñ l4°C]. Nickel to 1.00 incl. 0.03
7.1 .7 Qtieii‹ li arid temper—Material shall be fully austen- over 1.00 to 5.00 incl. 0.07
itized and quenched immediately in a suitable liquid medium. over 5.00 to 10.00 incl. 0.10
over 10.OO to 20.00 incl. 0.15
The quenched fittings shall be reheated to a minimum tempera- over 20.00 to 22.00 incl. 0.20
ture of I l00°F {590°C) and cooled in still air. Molybdenum io o.zo inci. o.oi
over 0.20 to 0.60 incl. 0.03
8. Chemical Requirements over 0.60 to 2.00 incl. O.05
over 2.00 to 7.00 incl. 0.10
8.1 Clteiitic'ol Azio/j'siJ—Samples for chemical anal ys is and Titanium all ranges 0.05
methods of analysis shall be in accordance with Test Methods, Columbium (Niobium) all ranges 0.05
+ Tantalum
Practices and Terminology A 751. Columbium (Niobium) 0.05 to 0.20 incl. 0.01
8.2 Henf Vita/j’.ri.s—An analysis of each heat of steel shall Tantalum IO 0.10 incl. 0.02
be niude by the steel manufacturer to determine the percentages Cobalt 0.05 to 0.20 incl. 0.01
Nitrogen to 0.19 incl 0.01
of those elements specified in the individual product specifi- over 0.19 to 0.25. 0.02
cation. If secondary melting processes are employcd. the heat over 0.25 to O.35 a.oa
analysis shall be obtained from one remelted ingot, or the over 0.35 to 0.45 0.04
over 0.45 to 0.60 O.05
product of one rc•melted ingot, from each primary melt. The Aluminum to 0.05 incl. O.01
chemical analysis thus determined shall conform to the require- Vanadium to o.10 incl. O.o1
ments of ihe indix idual product specihcation. Note that the over 0. J 0 to 0.25 incl. 0.02
Cerium 0.03 to 0.08 —0.005
product analysis Icheck analysis) tolerances are not to be
applied to the Heat Analysis requirements. “ This table does not apply to heat analysis.
8.3 Prr›diici Aiiofvsis—If a product analysis is performed it ^ Product analysis limits for cobalt under 0.05 % have not been established and
shall be in accordance with Test Methods. Practices, and the producer should be consulted tor those limits.
Terminology A 75 1. Samples for analysis shall be taken from
midway between center and surface of solid parts, midway ted by the product specification. The locations from which test
between inner and outer surfaces of hollow parts, midway specimens are removed shall be in accordance with the Product
between center and surface of full-size prolongations or from Specification.
broken mechanical test specimens. The chemical composition 9.3 If separately forged test blanks are used, they shall be of
thus determined shall conform to the limits of the product the same heat of steel, be subjected to substantially the same
specification, within the permissible variations of Table l or reduction and working as the production forging they repre-
Table 2 of this specification, as appropriate for the grade being sent. be heat treated in the same furnace charge except as
supplied. provided for in the reduced testing provisions of the product
specification. under the same conditions as the production
9. Mechanical Requirements forging. and be of the same nominal thickness as the maximum
9. 1 Method of Mechanical rests—All tests shall be con- heat treated thickness of the production forging.
ducted in accordance with Test Methods and Definitions A 370. 9.4 When parts are machined from bar or seamless tubing,
9.2 For the purpose of determining conformance to the as permitted in 6. I.I and 6. 1.2, the mechanical properties may
product specification requirements, specimens shall be ob- be determined for the parts from the starting material, if the
tained from the production forgings. or from separately forged parts have not been subjected to any subsequent thermal
test blanks prepared from the stock used to make the finished processing since the time of mechanical test.
product. In either case, mechanical test specimens shall not be
removed until after all heat treatment is complete. If repair 10. Hardness Requirements
welding is performed, test specimens shall not be removed 10.1 The part shall conform to the hardness requirements
until after post-weld heat treatment is complete, unless permit- prescribed in the product specification.

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 TABLE 2 Product Analysis Tolerances for Low Alloy Steels^

Tolerance Over Maximum Limit or Under Minimum Limit for Size Ranges Shown, WI %
Element Limit or Maximum ot 100 in.°(6.45 10° Over 100 to 200 in.* Over 200 to 400 in." Over 400 in.*
Specified Range, Wt % mm*), or less (1.290x 10* mm*), incl (2.581 x. 10” mm*), incl
Mn to 0.90 incl O.03 a.or 0.05 0.06
over 0.90 to 1.00 incl 0.04 0.05 0.06 0.07
to 0.045 incl 0.005 0.010 0.010 0.010
S to 0.045 incl 0.005 0.010 0.010 0.010
Si to 0.40 incl 0.02 0.02 0.03 0.04
over 0.40 to 1.00 incl 0.05 0.06 0.06 0.07
Cr to 0.90 Incl 0.03 0.04 0.04 0.05
over 0.90 to 2.10 incl 0.05 0.06 0.06 0.07
over 2.10 to 3.99 inci 0.10 0.10 0.12 0.14
Ni to 0.50 0.03 0.03 0.03 0.03
Mo to 0.20 incl 0.01 o.of 0.02 0.03
over 0.20 to 0.40 incl 0.02 0.03 0.03 0.04
over 0.40 to 1.15 0.03 0.04 0.05 006
Cu to .00 incl 0.03 0.03 0.03 0.03
over 1.00 to 2.00 incl 0.05 0.05 0.05 0.05
to 0.10 0.01 0.01 0.01 0.01
to 0.10 incl 0.01 0.01 0.01 007
over 0.10 to O.25 incl 0.02 0.02 0.02 0.02
over 0.25 to 0.50 incl 0.03 0.03 0.03 0.03
^ Product Analysis for C, B, Cb and Ca shall conform to the Product Specification.
"Cross-sectional area.

10.2 Sampling for hardness testing shall conform io the

side of, the specimen that failed. Each of the retested speci-
product specification. mens must exhibit an energy value equal to or greater than the
minimum average value required by the product specification.
11. Tensile Requirements
11.1 Sampling for tensile testing shall conform io the 13. Hydrostatic Test Requirements
Product Specification. 13.1 Parts manufactured under this specification shall be
l 1.2 When the dimensions of the material to be tesied will
capable of passing a hydrostatic test compatible with the rating
permit, the tension test specimens shall be machined to
of the finished part. Such tests shall be conducted by the
standard round 2-in. [50-mm] gage length tension test speci-
supplier only when the hydrostatic test supplementary require-
men described in Test Methods and Definitions A 370. mcnt in the product specification is invoked by the purchaser.
11.3 In the case of small sections, which will not permit
taking of the standard test specimen described in I 1.2, the 14. Rework
subsize round specimen shall he machined as described in Test
14. 1 When one or more representative test specimens or
Methods and Definitions A 370. The tension test specimen
rctest specimens do not conform to the requirements specified
shall be as large as feasible.
in the product specification for the tested characteristic, the
11.4 The results of the tensile tests shall conform to the
product may be reworked according to the following require-
tensile property requirements prescribed in the product speci-
ments.
fication.
14. I .1 If previously tested in the unheat treated condition,
11.5 If the results of tension tests do not conform to the
the product may be reworked by heat treatment, and subse-
requirements specified in the product specification, retests are
quently retested. in accordance with the product specification.
permitted as outlined in Test Methods and Dehnitions A 370. If
14. I.2 If previously tested in the heat treated condition, the
the results of any tension test specimcn are less than specified
product may be reworked by reheat treatment, and subse-
because a flaw becomes evident in the test specimen during
testing, a retest shall be allowed provided that the defect is not quently retested, in accordance with the product specification.
attributable to ruptures, cracks, or flakes in the steel. 15. Finish and Appearance
12. Impact Requirements 15. 1 The parts shall conform to the dimensions, tolerances,
and finish as specified on the purchaser's drawing or order.
12.1 The part shall conform to the impact requirements
l 5.2 The finished pans shall be cleaned to remove all scale
prescribed in the product spccification.
and processing compounds prior to the final surface examina-
I 2.2 Sampling for impact testing shall conform to the
Product Specification. tion. The cleaning process shall not injure the surface finish,
material properties, or the metallurgical structure. The cleaned
12.3 If the average impact energy value meets the product
parts shall be protected to prevent recontamination. Protective
specification requirements, but the energy value for one speci-
coatings on parts subsequently subjected to socket welds or
men is below the specified minimum value for individual
butt welds shall be suitable for welding without removal of the
specimens. a retest is permitted. This shall consist of two
coating. When specified in the purchase order, parts may be
impact specimens from a location adjacent to, and on either
furnished in the as-formed or as-forged condition.

COPYRIGHT 2001 American Society for Testing and 4 Information Handling Services, Fri Oct 19 20:10:53
 A 961
I5.3 The parts shall be free of injurious imperfections as additional requirements, if any, invoked in the Product Speci-
defined below. At the discretion of the inspector representing ficauon.
the purchaser, finished parts shall be subject to rejection if
surface imperfections acceptable under 15.5 are not scattered, 17. Inspection
but appear over a large area. 17.1 The supplier shall afford the purchaser's inspector all
I 5.4 Dej›tli of Injurious Iiuyerfecrion.s—Selected typicuI reasonable facilities necessary to satisfy him that the material
linear and other typical surface imperfections shall be is being produced and furnished in accordance with the general
explored for depth. When the depth encroaches on the specification and the applicable product specification. Site
minimum specified wall thickness of the finished pan, such inspection by the purchaser shall not interfere unnecessarily
imperfections shall be considered injurious. with the supplier's operations.
15.5 Imf›ei[actions Not Clcissified cis iityiirioas—Surface
imperfections not classified as injurious shall be treated as 18. Rejection and Rehearing
follows: 18.1 Unless otherwise specified, any rejection based on
15.5.1 Seams, laps, tears, or slivers not deeper than 5 % of product analyses made by the purchaser in accordance with this
the actual wall thickness at the point of interest or Ui6 in. [ 1.6 specification shall be reported to the manufacturer within
mm], whichever is less, are acceptable. lf deeper, these two days from date of test.
imperfections require removal, and shall be removed by 18.2 Samples that represent material rejected for failure to
machining or grinding. comply to product analysis specified in S52 shall be
15.5.2 Mechanical marks or abrasions and pits shall be preserved for two weeks from the date of the test report. In
acceptable without grinding or machining provided the depth case of dissatisfaction with the results of the test, the
does not exceed 'Rio in. [ 1.6 mm]. If such impcJections are manufacturer may make claim for a reheating within that
deeper than '/i6 in. [ 1.6 mm] but do not encroach on the time.
minimum wall thickness of the forging they shall be removed 18.3 Material that shows injurious defects subsequent to
by machining or grinding to sound metal. its acceptance at the manufacturer's works will be rejected,
15.5.3 The wall thickness at the point of grinding, or at and the manufacturer shall be notified.
imperfections not required to be removed, shall be
determined by deducting the amount removed by grinding, 19. Certification
from the nominal finished wall thickness of the part. In any
19.l Marking of the ASTM specification number and manu-
case, the wall thickness shall not be less than the specified
facturer's name or trademark on the parts, and printing of
minimum value.
the same on test reports, when required. shall be certification
16. Repair by Welding that the parts have been furnished in accordance with the
16.1 The purchaser may require the supplier to submit require- ments of the specification.
proposed weld repairs for approval by invoking the 19.2 Test reports shall be traceable to the heat
appropriate supplementary requirement from the applicable identification on the pans. They shall contain the information
product speci- fication in the purchase order. If the purchaser specified by the Product Specification and the purchaser
does not require prior approval of proposed weld repairs, order. They shall include the specification number and
these repairs shall be permitted at the discretion of the year/date of issue.
supplier. All weld repairs shall be performed in accordance 19.3 A certificate printed from or used in electronic data
with the following limitations and requirements. interchange (EDI) transmission shall be regarded as having
16.1.1 1 The welding procedure and welders shall be the same validity as a counterpoint printed in the certifiers
qualified in accordance with Section IX of the ASME facility. The content of the EDI transmitted document shall
Boiler and Pressure Vessel Code. conform to any existing EDI agreement between the
16.1.2 Defects shall be completely removed prior to weld- purchaser and sup- plier.
ing by chipping or grinding to sound metal. Removal of these 19.4 Not withstanding the absence of a signature, the
defects shall be verified by magnetic particle inspection in organization submitting either a printed certificate or an EDI
accordance with Test Method A 275/A 275M or Guide E 709 transmitted certificate is responsible for the content of the
for the ferritic, martensitic, or ferritic/austenitic grades, or by report.
liquid penetrant inspection in accordance with Test Method
E 165 for ferritic, martensitic, or austenitic grades. 20. Marking
16.1.3 After repair welding. the welded area shall be 20. l Each piece shall be legibly marked with the ASTM
ground smooth to the original contour and shall be completely specification number, grade and class, certifying organization's
free of defects as verified by magnetic particle or liquid name or symbol, the heat number or heat identification, size.
penetrant inspection, as applicable. and service rating, if applicable. It is not required to mark the
16. 1.4 Repair by welding shall not exceed 10 % of the product with the specification year and date of issue. The
surface area of the part, or 33 fis to of the wall thickness of the Standard Marking System of Valves, Fittings, Flanges and
finished product, or "/ in. [10 mm] deep at the location of the Unions (SP 25) may be followed except the word “steel” shall
repair. not be substituted for the ASTM designation.
l 6.2 The weld repair shall conform to 9.2 and to the 20.2 Product marking shall conform to the additional re-
quirements, if any, invoked in the product specification or

COPYRIGHT 2001 American Society for Testing and 5 Information Handling Services, Fri Oct 19 20:10:53
 purchase order.

COPYRIGHT 2001 American Society for Testing and 6 Information Handling Services, Fri Oct 19 20:10:53
 IQ A 961

21. Packaging, Marking and Loading for Shipment 22. Keywords

2 1.1 Packaging. marking, and loading for shipment shall be 22. I alloy steel; carbon steel; fittings: flanges; forgings;
in accordance with Practice A 700. general requirement; piping applications; pressure containing
2 1.2 When specified in the contract or order, and or direct
parts; stainless steel; temperature service applications—
procurement by or direct shipment to the government, when
elevated; temperature service applications—high: valves
Level A is specified, preservation, packaging. and packing
shall be in accordance with Level A requirements of MIL-
STD-163.

SUPPLEMENTARY REQUIREMENTS

These requirements shall not be considered unless specified in the order, in which event. the
supplementary requirements specified shall be made at the place of manufacture, unless otherwise
ag•reed upon. at the purchaser's expense. The test specified shall be witnessed by the purchaser's
inspector before shipment of material, if so specified in the order. The rationale for beginning the
section numbering with 550 is to eliminate the possibility of confusion with supplementary
requirements existing in individual product specifications.

S50. Macroetch Test

requirements listed in the applicable product specification
550. I A sample forging shall be sectioned and ctched to and shall be reported to the purchaser.
show flow lines and internal imperfections. The test shall be
conducted according to Method E 381. S55. Magnetic Particle Examination
S50.2 Acceptance limits shall be as agreed upon between SSS. l All accessible surfaces of the finished forging shall be
the certifying organization and the purchaser. examined by a magnetic particle method. The method shall be
in accordance with Test Method A 275. Acceptance limits
SSI. Heat Analysis shall be as agreed upon between the certifying organization
S5 1. l When secondary melting processes are employed, a and the purchaser.
heat analysis shall be obtained from each remelted ingot. or the So6. Liquid Penetrant Examination
product of each remelted ingot, from each primary melt. The
S56. 1 All accessible surfaces shall be examined by a liquid
chemical analysis thus determined shall conform to the require-
penetrant method in accordance with Test Method E 165.
ments of the individual product specification. Note that the
Acceptance limits shall be as agreed upon between the certi-
product analysis (check analysis) tolerances are not to be
fying organization and the purchaser.
applied to the heat analysis requirements.
S57. Hydrostatic Testing
S52. Product Analysis
S57.1 A hydrostatic test at a pressure agreed upon between
S52. 1 A product analysis shall be made from one randomly the certifying organization and the purchaser shall be applied
selected forging representing each heat. The results shall by the certifying organization.
comply with the product analysis limits listed in the
applicable product specification. 558. Repair Welding
552.2 If the analysis fails to comply, each forging shall be S58.l No repair welding shall be permitted without prior
checked or the lot rejected. All results shall be reported to the approval of the purchaser. If permitted, the restrictions of
purchaser. Section 16 shall apply.
553. Tension Tests S59. Electropolished Austenitic and Ferritic-Austentic
Grades
553.1 In addition to the requirements of Section 9, one
tension specimen shall be obtained from a representative S59.l All electropolished austentic and ferritic—austentic
forging from each heat at a location agreed upon between the products shall be of a cleanliness in accordance with Specifi-
certifying organization and the purchaser. The results of the test cation A 967.
shall comply with the tensile property requirements listed in S59.2 Details concerning which test method of Specifica-
the applicable product specification and shall be reported to the tion A 967 are to be a matter of agreement between the
purchaser. manufacturer and the purchaser.
S60. Positive Material Identification Examination
554. Impact Tests
S60.l Forgings shall receive positive material identification
S54. l In addition to the requirements of Section 9, tluee to ensure that the purchaser is receiving forgings of the
CVN impact energy specimens shall be obtained from a correct material grade prior to shipment of the forgings. This
representative forging from each heat at a location agreed upon
exami- nation is a method to ensure that no material grade
between the certifying organization and the purchaser. The mix-up has occurred during the manufacturing and marking
results of the test shall comply with the CVN impact energy of the forg- ings.

6
COPYRIGHT 2001 American Society for Testing and Materials Information Handling Services, Fri Oct 19 20:10:53 2001
 t/t A 961
S60.2 Forgings shall receive a positive material identifica- 561. Heat Treatment in the Working Zone of a Surveyed
tion examination in accordance with Guide E 1916. Furnace
S60.3 The quantity examined shall be l0D '7o of the forg-
S6 1. l Material shall be heat treated in the working zone of
ings.
a furnace that has been surveyed in accordance with Test
560.4 All forging•s that are not of the correct material grade
shall be rejected. Method A 991/A 99 lM, provided that such w'orking zone was
S60.5 The method of forging marking after examination established using a variation of 25°F ( l5°C) or less from the
Shall be agreed upon between the manufacturer and the furnace set point.
purchaser. S61.2 The test report shall indicate that S6l applies.

ANNEX

(Mandatory Information)

Al. Requirements for the Introduction of New Materials

A1. l New materials may be proposed for inclusion in A 1.1.3 The application shall be accompanied by test data as
specifications referencing this specification of general require- required by the applicable specification. Test data from a
ments subject to the following• conditions: minimum of three test lots. as defined by the specification. each
A1.1. l Application for the addition of a new grade to a from a different heat, shall be furnished.
specification shall be made to the chairman of the subcommit- A1.1.4 The application shall provide recommendations for
tee, which has jurisdiction over that specifiCRttOfl. all requirements appearing in the applicable specification.
A l.l .2 The application shall be accompanied by a statement A l.l .5 The application shall state whether or not the new
from at least one user indicating that there is a need for the new grade is covered by patent.
grade to be included in the applicable specification.

The American Society lor Testing anct Materials takes no position respecting the va/idity oi any patent rights asserted in connection
with any item mentioned in lhis s/ancfarcf. Llsers at this standard are expressly aavised that determination of fhe validity ol any such
patent rights, and the risk of infringement of such rights, are entirely their ovrn responsibility.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and
if not revised, either reapproved or withdrawn. Your comments are invited either for revision o(this standard or for additional
standards and should be addressed to ASTM Headquarters. Your comments will receive carefu/ consideration at a meeting ol the
responsible technical committee, which you may attend. If you feel that your comments have not received a lair hearing you should
make your views known to the ASTM Committee on Standards, at the address shown below.

This standard is copyrighted by ASTM. i00 Barr Harbor Drive, PO Box C7'00, West Conshohocken, PA 19428-2959, Uniied
States. Individual reprints (single or multiple cop/est of this standard may be obtained by contacting ASTM at the a6ove
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(www.astm.org).

COPYRIGHT 2001 American Society for Testing and Materials 7 Information Handling Services, Fri Oct 19 20:10:53 2001