~ Designation: B 898 - 05"

'u II
INTERNATIONAL

Standard Specification for

Reactive and Refractory Metal Clad Plate1
This standmd is issued under the fixed designation B 898; 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 (E) indicale~ an editorial change since the last revision or reapproval.

e 1 NOTE- l 1. 1. 2 was corrected editorially in July 2006.

1. Scope 2.3 Military Standard: 4

1.1 This specification covers plate consisting of a base metal MlL-J-24445A Joint, Bimeta1lic Bonded, Aluminum to
to which is bonded, integrally and continuously, on one or both Steel
sides a layer of one of the fo1lowing: titanium, zirconium,
3. Terminology
tantalum, niobium, and their alloys. The material generally is
intended for pressure vessel use. 3.1 Defillitiol/S of Terms Specific to This Standard:
1.2 The values stated in inch-pound units are to be regarded 3.1.1 This mateIial is considered as single-clad or double-
as the standard. The values in parentheses and in metric tables clad dependent upon whether one or both sides of the base
are provided for information only. metal are covered by a cladding metal.
3.1.2 base metal, II-the component that comprises the
2. Referenced Documents greatest percentage of total thickness.
2.1 ASTM Standards: 2 3.1.3 claddillg mewl, or cladding metals, n-the compo-
A 265 Specification for Nickel and Nickel·Base Alloy-Clad nent, or components, which individually comprise less than the
Steel Plate greatest percentage of total thickness.
A 578/A 578M Specification for Straight·Beam Ultrasonic 3.1.4 cladding operation, n-the production event, wbich
Examination of Plain and Clad Steel Plates for Special results in the formation of the bond between the cladding and
Applications base metal components, plus all related prebonding and post
B 265 Specification for Tilanium and Titanium Alloy Strip, bonding operations, prior to supply to the purchaser.
Sheet, and Plate 3.1.5 inter/ace, n-of the clad product, is that region of
B 393 Specification for Niobium and Niobium Alloy Strip, thickness in which the product transitions from essentially
Sheet, and Plate 100 % base metal to 100 % cladding metal. Also known as
B 55 1fB 551M Specification for Zirconium and Zirconium bond or bond zone.
Alloy Strip, Sheet, and Plate 3.1.6 inter/ayer, n-a metal layer of a type or grade differ-
B 708 Specification for Tantalum and Tantalum Alloy Plate, ent from the cladding metal and base metal, which is applied
Sbeet, and Strip between the c1adding and base metal.
2.2 ASME Code:' 3.1.7 integraliy and contilluously bOl/ded, adv-a condition
Boiler and Press ure Vesse l Code, Section IX, Welding in which the cladding metal and base metal are brought
Qualifications together to form a metallurgical bond at essentially the entire
Boiler and Pressure Vessel Code. Section vrn. Divisions 1, interface of the two metals by means other than those processes
2, 3 that do not produce a homogeneous composite plate.
4. Ordering Information
4.1 Orders for material under this specification shall include
I This specification is under the jurisdiction of ASTM Connnittee B to on the following infonnation:
Reactive and Refractory Metals and Alloys and is the direct responsibility of
Subcommittee BIO.OI on Titanium.
4.1.1 Quantity.
Current edition approved May I, 2005. Published June 2005. Originally 4.1.2 Product dimensions, including thickness of both c1ad-
approved in 1999. Last previous edition approved in 1999 as B 898- 99. ding metal and base metal. It should state whether each
2 For referenced ASTM standards. visit the ASTM website, www.astm.org. or
thickness value is minimum or nominal. If not stated, thickness
contact ASTM Customer Service at servi~@a.)tm.org. For Annual Book of AS1M
Sf(lndards volume infonnation, refer to the standard·s Document Summary page on values shall be nominal.
tbe ASTM website.
3 Available from American Society of Mechanical Engineers (ASME), ASME
intemational Headquarters, Three Park Ave .. New York, NY 100!6-5990.
~ Available from Standardization Documents Order Desk. DODSSP. Bldg. 4.
Section D, 700 Robbins Ave., Philadelphia. PA 19111-5098

Copyrighl C ASTM InlemaUonal. tOO Barr Harbor Drive. PO Box C700, West Conshohocken, PA 19428-2959, United Slates.
 • B898-0S"
4.1.3 Cladding metal type and specification (the cladding 7. Mechanical Properties
metal specification) (see Section 6). 7.1 The base metal shall conform to the mechanical prop-
4.1.4 Base metal type and specification (the base metal erty requirements prescribed in the base metal specification.
specification) (see Section 6). 7.2 The mechanical properties of the cladding metal may
4.1.5 Flatness requirements (see 10.3), not conform necessarily to the mechanical property require-
4.1.6 Ultrasonic inspection level (see Section ] 1). ments prescIibed in the cladding metal specification unless
4.1.7 Heat treatment requirements, if any. otherwise agreed upon between manufacturer and purchaser.
4.].8 Restrictions limiting or disallowing welding, or weld 7.3 Mechanical testing of the base metal, in accordance with
repair, or both, if any (see Section 12). the base metal specification, may be performed prior to the
4.1.9 Any additional codes and standards specified by the cladding operation if the cladding operation does not affect the
purchaser or manufacturer. applicable mechanical properties of the base metal.
4.1.10 Supplementary Requirements, if any. 7.4 Unless simulated post cladding heat treatments are
4.1.11 Additional requirements , if any. specified by the purchaser, Supplementary Requirement SS, the
mechanical test specimens shall be representative of the
material in the heat treatment condition of product being
5. Materials and Manufacture
shipped from the clad manufacturer.
5 . .1 Process: 7.5 Tensile Strength Requirements-The tensile propclties
5.1.1 The base metal shall be manufactured in accordance shall be determined by a tension test on the base metal only in
with all applicable requirements of the base metal specification accordance with the testing requirements of the base metal
(see 4 .1.4). specification. When tension test specimen are taken from the
5.1.2 The cladding metal shall be manufactured in accor- clad plate, the cladding shall be removed before tension tests
dance with all applicable requirements of the cladding metal are made.
specification (see 4.1.3). 7.6 Bond Shear Strength- When bond shear strength testing
5.1.3 The cladding metal shall be bonded to the base metal is specified, Supplementary Requirement SI, the bond shear
by any cladding operation that will produce a clad product strength of the clad product shall be 20 000 psi (137.9 MPa)
which will confonll to the requirements of this specification. minimum when tested in accordance with Fig. 1.
Cladding methods may be, but are not limited to, explosion
bonding, roll bonding, and weld overlay. 8. Chemical Analysis
5.1.4 The cladding metal may be fabricated from multiple 8.1 When the cladding operation does not affect the chemi-
sheets or plates by edge butt welding prior to the cladding cal composition of the cladding or base metal, or both, the
operation. chemical analysis, in accordance with cladding, or base metal
5.1.5 The cladding thickness may consist of multiple layers specifications, or both, may be performed prior to the cladding
of the cladding metal. operation. Otherwise, chemical analysis of the applicable
5.2 Heat Treatment-Unless otherwise specified or agreed component or components shall be pelformed after the clad-
between the purchaser and the manufacturer, all heat treat- ding operation in accordance with the cladding metal or base
ments shall be perfonned as needed in the cladding operation metal specifications, or both.
to assure the following: 8.2 When chemical analysis of tbe finished product is
5.2.1 The cladding metal conforms to the applicable re- invoked, Supplementary Requirement S4, the frequency of
quirements of the cladding metal specification, testing, specimen location, and testing methods shall be agreed
5.2.2 The base metal conforms to the applicable require- upon between manufacturer and purchaser.
ments of the base metal specification, and
5.2.3 The clad bond exhibits optimum resistance to dis- 9. Location and Number of Tests and Retests
bonding during common fabrication processes. 9.1 Tension, Bend, and Impact Tests (When RequiredJ-The
specimen orientation, location with respect to thickness, and
6. Chemical Composition number of tests and retests shall be in accordance with the
6.1 The composite plate may confonn to any desired com- requirements of the base metal specification. The test specimen
bination of cladding metal and base metal as described in 6.2 location within the plate shall be at the manufacturer's option.
and 6.3 and as agreed upon between the purchaser and the
manufacturer. 10. Dimensions and Flatness, Permissible Variations
6.2 Cladding Metal- The cladding metal shall confOlm to 10.1 Thickness:
the requirements as to chemical composition prescribed in the 10.1.1 Cladding metal thickness tolerances shall be in
applicable cladding metal specification: B 265, B 393, B 55 11 accordance with Table 1.
B 55 1M, or B 708. 10.1.2 Base metal thickness tolerances shall be in accor-
6.3 Base Metal-The base metal shall be steel or any other dance with Table 2.
product conforming to specifications for metal plate. The base 10.1.3 When the purchaser specifies flatness in accordance
metal shall conform to the requirements as to chemical with 10.3 .1.3 or 10.3. 1.4, overgage tolerances in excess of
composition prescribed in the base metal specification. those specified herein may be specified by the manufacturer.

2
 cO B898-0S"
0.75" (19mm)
I Cladding Metal I
~1.5 t, < 3.0 t

• 2t
.I

Jr'"
2.5" (64mm)
(25.4mm)

I Base Metal
I
t= Cladding Metal Thickness- II > 0.125 in. (3.2 mm), machine to 0.125 in. (3.2 mm) max
T == Base Metal Thickness- If base metal thickness> 1.0 in. (25.4 mm), it may be machined to 1.0 in. (25.4
mm) nominal.
Remove all cladding from base metal, except for area shown.
All corners are 90°.
FIG. 1 Shear Test Specimen

TABLE 1 Cladding Metal Thickness Tolerance 10.1.4 When agreed upon by the producer and the pur-
When Cladding Metal Thickness is Specified chaser, overgage tolerances different from those specified
Minimum Nominal herein shall apply.
Specified Thickness ~ 0.150 in . > 0.150 in . <: 0.188 in . 2: 0.188 In. 10.1.5 When an interlayer metal is included in the product
Undergage Tolerance 0 0 0 .030 in. 0.060 in. and when its thickness exceeds 0.005 in. (0.127 mm) nominal,
Overgage Tolerance 100 % of 50% of 100% of 50% of
min min nominal nominal its composition and nominal thickness shall be reported.
10.2 Length and Width or Diameter Tolerances:
TABLE 1M Cladding Metal Thickness Tolerance 10.2.1 Clad plates shall be supplied with edges cut to the
When Cladding Metal Thickness is Specified dimensions specified by the purchaser. Cutting may be per-
Minimum Nominal fonned by thermal or mechanical means or any other method,
Specified Thickness s 3.8 mm > 3.8 mm < 4.8 mm ~ 4.8 mm which does not deleteriously affect the product quality. Clad
Undergage Tolerance 0 0 0.75 mm 1.5 mm plates shall confonn to the length and width or diameter
Overgage Tolerance 100 % of 50 % of 100% of 50 % of
specified specified specified specified
tolerances ofTablc 3 unless otherwise agreed upon between the
minimum minimum nominal nominal manufacturer and purchaser.
10.2.2 When specified by the purchaser, clad plate shall be
supplied in the as-clad or mill edge, condition. Minimum sound
TABLE 2 Base Metal Thickness Tolerance bond size shall be specified, and length and width tolerances of
When Base Metal Thickness is Specified the as-supplied product shall be as agreed upon between
Minimum Nominal
purchaser and manufacturer. All edge nonbolld areas outside of
Specified Thickness < 1.0 in. :i?; 1.0 in. < 1.0 in. :i?; 1.0 in.

Undergage Tolerance 0 0 0.01 in. 0.Q1 in.

Overgage Tolerance 0.21 in. 0.26 in. 0.20 in. over 0.25 in. over
TABLE 3 Length and Width, or Diameter, Tolerance
over min over min nominal nominal Permissible Variation from Specified Length and
Total Thickness
Widths or Diameter
TABLE 2M Base Metal ThIckness Tolerance <2.0 in. -{), + 0.6 in.
When Base Metal Thickness is Specified
:i?; 2.0 In., < 4.0 in. -{), + 1.0 in.
Minimum Nominal
:i?; 4.0 in., <8.0 In. -{), + 1.5 in .
:i?; 6.0 in. per agreement
Specified Thickness < 25.4 mm 25.4 mm < 25.4 mm
:i?; 25.4 mm
:i?;

Undergage Tolerance 0 0 0.25 mm 0.25 mm

TABLE 3M Length and Width, or Diameter, Tolerance
Overgage Tolerance 5.3 over 6.6 over 5.1 over 6.4 over
specified specified specified specified Permissible Variation from Specified Length and
minimum minimum nominal nominal Total Thickness
Widths or Diameter

<50 mm -{), + 20 mm
:i?;50, <100 --0, + 25 mm
~ 100, <200 -{), + 38 mm
:i?; 200mm per agreement

3
 01
• B 898-05
[he specifi ed mInimum sound bond area shall be marked reducing thickness below the minimum specified, upon appli-
clearly on the surface, or the boundary of the required sound cation of proper set-up and machining practice.
bond area shall be marked clearly on the sound bond portion of 10.3.1.5 Other Flatness- Other flatness requirements may
the surface, or both. be agreed upon mutually between the manufacturer and the
10.3 Flatness: purchaser.
10.3.1 Flalness of the clad plate shall be in accordance with
one of the following flatness tolerance requirements. When 11. Nondestructive Testing
flatness requirements are not specified by the purchaser, 11.1 After the completion of all mechanical and thennal
flatness tolerances of 10.3.1. 1 shan apply. processing components of the cladding operation, clad plates
10.3.1.1 Standard Plate Flatness- Out-of-tlatness of the shall be inspected for bond integrity in accordance with the
cladding face shall not exceed the requirements of Tab le 4. procedures and methods of Specification A 578/A 578M. Scan-
This flatness criteria typically is applicable for clad plates ning shall be performed with a I in. (25 mm) or I 'I, in. (30
intended for subsequent forming, or fabrication, or both. mm) diameter or 1 in. (25 mm) square transducer. Any
10.3. 1.2 Special Flatne. . s-Out-of-ftatness of the cladding indication which causes 100 % loss o f back reflection accom-
face shall not exceed 0.100 in. (2.5 mm) over any 36-in. panied by a reflection from the clad interface shall be record-
(9 15-mm) span. This flatness criteria typicall y is applicable for able. Three Quality Levels shall apply. If the ultrasonic
plates used in tbe flat condition. inspection class is not specified, Class C shall apply.
10.3. 1.3 Machined Flallless-Out-of-flatness o f one or both 11.1.1 Class A--Scanning sball be performed over 100 % of
faces, as specified by the purchaser, shall llot exceed 0.010 in. the clad surface. Any si ngle recordable indication exceeding 1
(0.25 mm) over any 36-in. (9 15-mm) span. in. (25 mm) in its longest dimension shall be cause for
10.3.1.4 Suitable/or Machining Flat- The material shall be rej ection. The minimum sound bond area shall be 99 %.
supplied in a condition suitable for subsequent machining of 11.1.2 Class B--Scanning shall be performed over 100 % of
specified face or faces while protecting minimum specified the clad surface. Any single recordable indication exceeding 3
thickness, The combination of the flatness of the product and in. (75 mm) in its longest dimension shall be cause for
the thi ckness of the component metals shall pennit the cladding rejection. The minimum sound bond area shall be 97 %.
metal, or the base metal, or both, as specified by the purchaser, 11 . 1.3 Class C-Scanning shall be along continuous per-
to be machined to the requirements of 10.3. 1.3 without pendicular grid lines on nominal 9 in. (225 mm) centers, or at
tbe option of the manufacturer, shall be along contin uous
parallel paths on nominal 4 in. (100 mm) centers. Wben an
TABLE 4 Permissible Variations in Flatness of Cladding Metal
indication is observed during general scanning, the indication
Surface
shall be evaluated. Any single recordable indication exceeding
Total Thickness Maximum Out-of- Aatness Maximum Out-ai-Flatness Over
(in.) Over any 36 in:"-B.C,D any 72 in.E,AD
9 in.2(58 cm"!) in area shaH be cause for rejection . The
minimum sound bond area shall be 95 %.
<0.50 0.38 0 .56
~ O.50 <1.0 0 .31 0.47 11.2 If the cladding metal has been applied by welding or
~ 1 .0 <6.0 0.25 0.38 fabricated from multiple sheets by welding, when specified in
;l!:6.0 to be agreed upon to be agreed upon the contract, the exposed surface of the welds are to be 100 %
A Flatness is measured by placing a straight edge of 36-ln. length or a straight penetrant inspected in accordance with ASME Secti on VIII,
edge 01 72-ln. on the plate surface, or both, and then measuring the maximum
deviation between the plate surface and the straight edge. Balancin g of the straight
Division I, Appendix 8, or as agreed between purchaser and
edge on a high point is an acceptable measurement technique. manufacturer.
S For plate dimensions between 36 in. and 72 in., only the 36 In. shall apply.
C For plate dimensions less than 36 in. , the maximum out of flatness shall be the 12. Welding
ratio of (applicable dimension I 36 in.) X (above value for 36-ln. measurement)
o Thi s flatness criteri a shall apply to the total cladding metal surface. Measure- 12.1 Any welding, whi ch is part of the delivered product,
ments are required only as needed to assure that this requirement Is met. sball be performed with welders or welding operators that are
E For plate dimensions exceeding 72 in., both the 36-ln . and 72-ln. measure-
ments shall apply.
qualified in accordance with ASME Section IX and a welding
TABLE 4M Permissible Variations in Flatness of Cladding Metal Surface
procedure specification (WPS) that is in accordance with
Total Thickness Maximum Out of-Flatness mm Maximum Out-of-Flalness mm ASME Section IX.
(mm) Over any 9 15 mm'" Over any 1830 mm 8 ,C,D.E 12.2 All welds in the delivered product shall conform to any
<12.7 9.7 14.2
2: 12.7<25.4 7.9 11.9
applicable requirements of the base and cladd in g metal speci-
i!:2S.4 <150 6.3 9.7 fications and any additional requirements specified in the
i!:1S2 to be agreed upon to be agreed upon purchase order.
12.3 Weld Rework: Unless olhelw ise specified, rework of
'" Flatness is measured by placing a straight edge of 9 1S-mm length or a straight
edge of 1830 mm on the plate surface, or both, and then measuring the maximum
defects in the cladding and/or base metal may be performed by
deviation between the plate surface and the straight edge. Balancing of the straight welding, provided the followin g requirements are met:
edge on a high point is an acceptable measurement technique. 12.3. 1 Approval is received from the purchaser in advance
S For plate dimensions exceeding 1830 mm, both the 915 and 1830 measure·
ments shall apply. of proceeding with rework. When specified in the contract, the
C For plate dimensions between 915 and 1830, only the 915 shall apply. welding procedure specification (WPS) shall be subject to
o For plate dimensions less than 915, the maximum out of flatness shall be the approval by the purchaser prior to rework welding.
rat io of (applicable dimension I 915)X (above value for 915 measu rement)
E This flatness criteria shall apply to the total cladding metal surface. Measure-
12.3.2 The defective area is removed and the area prepared
ments are required only as needed to assure that thi s requiremenlis met. for rework is examined by a magnetic particle method or a

4
 • B898-0S"
liquid penetrant method to ensure all defective area has been able facilities to satisfy him that the matCl1al is being furnished
removed. Method of examination and acceptance standard in accordance with this specification. All tests shall be made
shall be as agreed upon between tbe purchaser and the prior to shipment unless otherwise specified.
manufacturer.
15. Rejection
12.3.3 Welds to the cladding metal shall be deposited in a
suitable manner so as to leave the surface condition similar in 15.1 Material not conforming to this specification or to
corrosion resistance to the adjacent cladding. authorized modifications, as permitted by this specification,
12.3.4 The reworked area shall be inspected in accordance shall be subject to rejection. Unless otherwise specified,
with the penetrant inspection requirements of Section 11.2 and rejected material may be returned to the manufacturer at the
the applicable ultrasonic inspection requirements of Section manufacturer's expense unless the purchaser receives, within
1J.J. three weeks of notice of rejection, other instructions for
12.3.5 The location and extent of the weld rework together disposition.
with the examination results are transmitted as a part of the 16. Certification
certification.
16. 1 At a minimum the following shall be certified to the
12.4 References to ASME Design Code shall be replaced
purcbaser by the manufacturer:
with comparable requirements of other national or international
16.1.1 The chemical analysis of the cladding metal and base
standards when agreed upon by the purchaser and the manu-
metal,
facturer (Section 4.1.9).
16.1.2 The results of mechanical tests of Section 7,
13. Workmanship, Finish and Appearance 16.1.3 Compliance with the nondestructive tests of Section
11 . and
13.1 The product surfaces shall be free of excess imperfec-
16.1.4 Compliance wilh the requirements of this specifica-
tions and extraneous materials as determined by visual exami-
tion.
nation. Excessive imperfections are those which exceed the
standards of the cladding and base metal specifications respec- 17. Product Marking
tively, or purchaser approved standards. Examples of imper- 17.1 Except at specified in 17.2 and 17.3, the following shall
fections are scratches, dents, burrs, seams, blisters, and heavy be stamped legibly on each finished clad plate in two places on
oxidation. Imperfections, which reduce the cladding, or base the base metal face not less than 12 in. (300 mrn) from the
metal thickness, or both, below the minimums specified are not edges:
permissible unless approved by the purchaser. Examples of 17.1.1 Name or brand of the manufacturer,
extraneous materials are dirt, lubricants, metal chips, abrasive 17.1.2 Manufacturer's test identification number,
grit, and excess weld metal or spatter. 17.1.3 This specification number,
13.2 The cladding surface shall be blasted, pickled, ground, 17.1.4 Base metal specification number, and
or polished to remove extraneous material. 17. 1.5 Cladding metal specification number.
13.3 The base metal surface condition shal1 be in accor- 17.2 For double-clad material, the information of 17.1 shall
dance with the requirements of the base metal specification. be stamped on one cladding metal face, except that when the
13.4 Surface defects may be blended by grinding, providing cladding metal of that face is less than O.2-in. (S-mm) thick, the
the metal thickness is not reduced below the specified mini- marking shall be stenciled legibly instead of stamped.
mum. 17.3 When the clad product is less than 72 in. (1830 mOl) in
13 .5 Surface finish, other than those described herein, may its largest lateral dimension, the specified information may be
be agreed upon between producer and purchaser. stamped in a single location only.
14. Inspection 18. Keywords
14.1 When an inspector is appointed by the purchaser, the 18.1 clad metal; clad plate; cladding; niobium; tantalum;
manufacturer shall afford the appointed inspector all reason- titanium; zirconium

5
 01
• B 898-05
SUPPLEMENTARY REQUIREMENTS

The following supplementary requirements shall apply only when agreed upon between the
purchaser and the manufacturer.

S1. Bond Shear Strength Testing S3. Side Bend Tests

51.1 Bond shear strength testing shall be perfonned on the S3.! When specified by the purchaser, side bend tests shall
product when specified by the purchaser. be perfonned. Testing methods and acceptance criteria shall be
agreed upon or shall be in accordance with an invoked
S 1.2 Shear test specimens shall be made in the manner
specification. 5
indicated in Fig. 1. Shear testing sha1l he performed in
accordance with Specification A 265. The minimum permis- S4. Product Analysis
sible shear strength shall be 20000 psi (137.9 MPa). S4.1 Product analysis shall be performed on the cladding, or
51.3 One shear tcst shall be performed for each lot of clad base metal, or both, when specified by the purchaser. The
plates, which consist of the same cladding and base metal lots specimen for analysis shall be taken from one end of each
(material from the same heat having the same thickness and plate, as-clad, after completion of all mechanical and thermal
same heat treatment), and which are clad under the same processing component of the cladding operation.
bonding conditions. When specified by the purchaser, shear S4.2 Product verification by Positive Metal Identification
tests shall be performed on each plate as-clad. (PMI) techniques may be used for compliance with S4.1 when
S 1.4 Unless otherwise specified, the location of the shear mutually agreed upon.
test specimen shall be at the manufacturer's option and shall be S5. Simulated Heat Treatment of Mechanical Test
representative of the product. Coupons
S 1.5 Retesting shall be permitted only when the test speci- S5.1 The test specimens representing the plate in the as-
men or test method is defective. When retesting is petformed, supplied heat treat condition shall be given additional heat
two test specimens shall be obtained from a location as treatments which simulate thennal processing which is to be
adjacent as possible to the original specimen. The shear performed after supply. The temperature range, time, and
strength values of both must exceed the minimum specified heating/cooling rates, as applicable, shall be speci Bed by the
value. If the defective test applies to a lot of more than one purchaser. Unless agreed upon, these tests shan replace those
plate, the retest herein shall be performed on the original plate representative of the product in the as-supplied condition.
and a shear test shall be perfOlmed on each of the additional
plates as-clad. S6. Charpy V-Notch Impact Test of Base Metal
S6.1 Charpy V-Notch tests shall be perfotrned in accordance
S2. Ductility Bend Testing with the relevant requirements of the base metal specification.
Specimen orientation, temperature, and acceptance criteria are
S2.1 Ductility bend tests shall be performed when specified
to be specified by the purchaser.
by the purchaser or when applicable, or both, in the base metal
specification. Two bend tests of the composite plate shall be 87. Component Metal Ultrasonic Testing
made, one with the cladding metal in tension and the other with S7.1 Ultrasonic testing shall be performed on the cladding,
the cladding metal in compression. On double-clad plates, the or base metal, or both, when specified by the purchaser. Testing
bend tests shall be made so that one specimen represents the shall be pelformcd after the completion of all mechanical and
cl adding meta] in tension on one side while the other specimen thermal processing components of the cladding operati on.
represents the cladding metal in tension on the opposite side. Testing shall be in accordance with the procedures and meth·
At the manufacturer's option, the specimen shall be either the ods of Specification A 57S/A 578M. The acceptance level is to
design specified in Specification A 265 or 1 by 1 in (25 by 25 be specified by the purchaser.
mm) x sufficient length to assure a full ISO degree bend. lethe
cladding melal thickness exceeds 0.5 in (1.25 rnm), it shall be S8. Bond Tensile Strength Tests
reduced to 0.5 in. (12.5 mm) maximum. Bending radius and SS.1 When specified by the purchaser, bond tensile strength
acceptance criteria shall be in accordance with the cladding tests shal l be performed. Testing methods 6 and acceptance
metal specification when the cladding is in tension and the base criteria shall be agreed upon between purchaser and
metal specification when the base metal is in tension. manufacturer.

~ For consideration, one type of side bend test is specified in AD Merkblatt

Testing Requirements for Clad Metals AD-WS.
(\ For consideration, one example of bond tensile strength testing is the Ram
Tensile Strength Test described in MIL-J-24445J\.

6
 <08898-05<1
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