a-264
TRANSCRIPT
Designation: A 264 – 94a (Reapproved 1999)
Standard Specification forStainless Chromium-Nickel Steel-Clad Plate, Sheet, andStrip 1
This standard is issued under the fixed designation A 264; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification2 covers plate, sheet, and strip ofcarbon steel or low-alloy steel base to which is integrally andcontinuously bonded on one or both sides a layer of stainlesschromium-nickel steel. The material is generally intended forpressure vessel use.
1.2 The values stated in inch-pound units are to be regardedas the standard. SI units are provided for information only.
2. Referenced Documents
2.1 ASTM Standards:A 20/A 20M Specification for General Requirements for
Steel Plates for Pressure Vessels3
A 240/A 240M Specification for Heat-Resisting Chromiumand Chromium-Nickel Stainless Steel Plate, Sheet, andStrip for Pressure Vessels4
A 370 Test Methods and Definitions for Mechanical Testingof Steel Products4
A 480/A 480M Specification for General Requirements forFlat-Rolled Stainless and Heat-Resisting Steel Plate,Sheet, and Strip4
A 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel Products4
2.2 ASME Code:Boiler and Pressure Vessel Code, Section IX, Welding
Qualifications5
3. Terminology
3.1 Definitions of Terms Specific to This Standard:Descrip-tions of Terms:
3.1.1 This material is considered as single-clad or double-clad corrosion-resisting chromium-nickel steel plate, sheet, orstrip depending on whether one or both sides are covered.
3.1.2 The terms plate, sheet, and strip as used in this
specification apply to the following:3.1.3 plate—Material 3⁄16 in. (2.73 mm) and over in thick-
ness and over 10 in. (254 mm) in width.3.1.4 sheet—Material under3⁄16 in. (2.73 mm) in thickness
and 24 in. (609.6 mm) and over in width, material under3⁄16in.in thickness and all widths and finishes of Nos. 3 to 8 inclusive,and
3.1.5 strip—Cold-rolled material under 24 in. (609.6 mm)in width and3⁄16 in. (2.73 mm) and under in thickness.
4. Ordering Information
4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification. Such requirements may include, but are notlimited to, the following:
4.1.1 Quantity (mass or number of pieces),4.1.2 Name of material (stainless chromium-nickel steel-
clad plate, sheet or strip),4.1.3 Cladding alloy (see Section 10),4.1.4 Base metal (see Section 10),4.1.5 Dimensions including the thickness of the cladding
alloy,4.1.6 Product analysis, if required, (see Section 8),4.1.7 Mechanical properties (see Sections 7, 8, and 15),4.1.8 Finish (see Section 11),4.1.9 Restrictions, if required, on repair by welding (see
Section 12), and4.1.10 Additions to the specification or special require-
ments.
5. Materials and Manufacture
5.1 Process:5.1.1 The steel shall be made by the open-hearth, electric-
furnace (with separate degassing and refining optional), orbasic-oxygen processes, or by secondary processes wherebysteel made from these primary processes is remelted usingelectroslag remelting or vacuum-arc remelting processes.
5.1.2 The alloy-cladding metal may be metallurgicallybonded to the base metal by any method that will produce aclad steel which will conform to the requirements of thisspecification.
5.2 Heat Treatment:5.2.1 Unless otherwise specified or agreed upon between
the purchaser and the manufacturer, all austenitic stainless steel
1 This specification is under the jurisdiction of ASTM Committee A-1 on Steel,Stainless Steel and Related Alloysand is the direct responsibility of SubcommitteeA01.17on Flat Stainless Steel Products.
Current edition approved Dec. 15, 1994. Published February 1995. Originallypublished as A 264 – 43 T. Last previous edition A 264 – 94.
2 For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-264 in Section II of that Code.
3 Annual Book of ASTM Standards, Vol 01.04.4 Annual Book of ASTM Standards, Vol 01.03.5 Available from American Society of Mechanical Engineers, 345 E. 47th St.,
New York, NY 10017.
1
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
clad plates shall be given a heat treatment consisting of heatingto the proper temperature for the solution of the chromiumcarbides in the cladding followed by individual air cooling. Forbase metals of air-hardening low-alloy steels the above heattreatment shall be followed by a tempering treatment.
5.2.2 When plates over 1 in. (25.4 mm) in thickness are tobe cold formed, the purchaser may specify that such plates beheat treated for grain refinement of the base metal.
6. Chemical Composition
6.1 The composite plate, sheet, or strip may conform to anydesired combination of alloy-cladding metal and base metal asdescribed in 6.2 and 6.3 and as agreed upon between thepurchaser and the manufacturer.
6.2 Alloy Cladding Metal—The alloy-cladding metal speci-fied shall conform to the requirements as to chemical compo-sition prescribed for the respective chromium-nickel or duplexsteel in Specification A 240/A 240M.
6.3 Base Metal—The base metal may be carbon steel orlow-alloy steel conforming to the ASTM specifications forsteel for pressure vessels. The base metal shall conform to thechemical requirements of the specification to which it isordered.
7. Mechanical Properties
7.1 Plate:7.1.1 Tensile Requirements:7.1.1.1 The tensile properties shall be determined by a
tension test of the composite plate for clad plates that meet allof the following conditions. However, if the cladding is forcorrosion allowance only, the cladding may be removed priorto tensile testing. The tensile properties thus determined shallbe not less than the minimum and not more than 5000 psi (35MPa) over the maximum prescribed in the specification for thebase steel used. All other tensile test requirements of thespecification for the base steel shall be met.
The composite gage is less than or equal to 11⁄2 in.The specified minimum tensile strength of the base steel is
less than or equal to 70 000 psi (485 MPa).The specified minimum yield strength of the base steel is
less than or equal to 40 000 psi (275 MPa).7.1.1.2 The tensile properties shall be determined by a
tension test of the base steel only for clad plates that meet oneof the following conditions. The tensile properties thus deter-mined shall meet all of the tensile test requirements for the basesteel.
The composite gage is greater than 11⁄2 in.The specified minimum tensile strength of the base steel is
greater than 70 000 psi (485 MPa).The specified minimum yield strength of the base steel is
greater than 40 000 psi (275 MPa).7.1.2 Ductility—Two bend tests of the composite plate shall
be made, one with the alloy cladding in tension and the otherwith the alloy cladding in compression to determine theductility of the materials. On double-clad plates, the bend testsshall be made so that one specimen represents the alloycladding in tension on one side while the other specimenrepresents the alloy cladding in tension on the opposite side.Bend tests shall be made in accordance with the requirements
prescribed in the specification for the base metal.7.1.3 Shear Strength—When required by the purchaser, the
minimum shear strength of the alloy cladding and base metalsshall be 20 000 psi (140 MPa). The shear test, when specified,shall be made in the manner indicated in Fig. 1.
7.1.4 Bond Strength—As an alternative to the shear strengthtest provided in 7.1.3 and when required by the purchaser, threebend tests shall be made with the alloy cladding in compressionto determine the quality of the bond. These bend tests shall bemade in accordance with the specifications for the claddingmetal. At least two of the three tests shall show not more than50 % separation on both edges of the bent portion. Greaterseparation shall be cause for rejection.
7.2 Sheet and Strip:7.2.1 The bend test specimens of sheet and strip shall stand
being bent cold through an angle of 180° without cracking onthe outside of the bent portion. The bend test specimens shallbe bent around a pin the diameter of which is equal to thethickness of the material. The axis of the bend shall betransverse to the direction of rolling.
7.2.2 The bond between the alloy cladding and the basemetal shall be ascertained by observation of the behavior of thecomposite sheet or strip when sheared with the alloy sidedown.
7.3 Methods and practices relating to mechanical testingrequired by this specification shall be in accordance with TestMethods and Definitions A 370.
8. Product Analysis
8.1 Product analysis may be required on finished product.Chemical analysis may be accomplished by wet chemical orinstrumental procedures. If wet chemical procedures are used,millings may be taken only when the composite plate thicknessis sufficient to permit obtaining millings without danger ofcontamination from the adjacent layer. If spectrometric proce-dures are used, the sample shall be exposed on the center line
Metric Equivalents
in. mm in. mm
0.005 0.127 1 25.41 / 8 3.18 2 1 / 2 64.53 / 4 19.1 3 76.2
FIG. 1 Test Specimen and Method of Making Shear Test of CladPlate
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of the cladding when there is sufficient cladding thicknessavailable so that there is no contamination from the adjacentbase metal.
8.2 If product analysis is specified by the purchaser, it shallbe made on a sample taken from the finished product or abroken test specimen. For wet chemical analysis, in order toavoid contamination by the base plate metal, millings ofcladding samples shall be taken from the test coupon byremoval and discard of all the base metal plus 40 % of thecladding thickness from the bonded side, not to exceed1⁄16 in.(1.598 mm). The material shall be cleaned and sufficientmillings taken to represent the full cross-section of the remain-der. If there is insufficient cladding thickness available tospectrographically expose on the center lineof the cladding without contamination, 50 % of the claddingshall be removed and the sample exposed on this surface.
8.3 The results of the product analysis shall conform to therequirements of Section 7 of Specification A 480/A 480M.
8.4 Methods and practices relating to chemical analysisrequired by this specification shall be in accordance with TestMethods, Practices, and Definitions A 751.
9. Dimensions, Mass, and Permissible Variations
9.1 Composite plates, sheets, and strips shall conform to thedimensional and weight requirements prescribed in Table 1,Table 2, Table 3, Table 4, and Table 5.
10. Thickness of Cladding Metal
10.1 The minimum thickness and tolerances on the thick-ness of the alloy-cladding metal shall be agreed upon betweenthe purchaser and the manufacturer.
11. Workmanship, Finish, and Appearance
11.1 The material shall be free of injurious defects, shallhave a workmanlike appearance, and shall conform to thedesignated finish.
11.2 Plate alloy surfaces shall be sand-blasted, pickled, orblast-cleaned and pickled.
11.3 The finish for the alloy surfaces of sheets and stripsshall be as specified in Specification A 240/A 240M.
12. Repair of Cladding by Welding
12.1 The material manufacturer may repair defects in clad-ding by welding provided the following requirements are met:
12.1.1 Prior approval shall be obtained from the purchaser ifthe repaired area exceeds 3 % of the cladding surface.
12.1.2 The welding procedure and the welders or weldingoperators shall be qualified in accordance with Section IX ofthe ASME Code.
12.1.3 The defective area shall be removed and the areaprepared for repair shall be examined by a magnetic particlemethod or a liquid penetrant method to ensure that all of thedefective area has been removed. Method of test and accep-tance standard shall be as agreed upon between the purchaserand the manufacturer.
12.1.4 The repair weld shall be deposited in accordancewith a welding procedure and welding materials suitable forthe cladding material. The surface condition of the repairedarea shall be restored to a condition similiar to the rest of thecladding.
12.1.5 The repaired area shall be examined by a liquidpenetrant method in accordance with 12.1.3.
12.1.6 The location and extent of the weld repairs togetherwith the repair procedure and examination results shall betransmitted as a part of the certification.
12.2 At the request of the purchaser or his inspector, platesshall be reheat treated following repair by welding.
13. General Requirements for Delivery
13.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A 20/A 20M.
14. Number of Tests and Retests
14.1 Plate:14.1.1 One or more tension tests, as required by the speci-
fications for the base metal, one face bend test (alloy claddingin tension), one reverse bend test (alloy cladding in compres-sion), and, when specified, one shear test or three bond bendtests shall be made representing each plate as rolled. Eachspecimen shall be in the final condition of heat treatmentrequired for the plate.
14.1.2 If any test specimen shows defective machining ordevelops flaws, it may be discarded and another specimensubstituted.
14.1.3 If the percentage of elongation of any tension testspecimen is less than that specified in 8.1.1 and any part of thefracture is more than3⁄4 in. (19.1 mm) from the center of thegage length of a 2-in. (50.8-mm) specimen or is outside themiddle third of the gage length of an 8-in. (203.2-mm)specimen, as indicated by scribe scratches marked on thespecimen before testing, a retest shall be allowed.
14.2 Sheet and Strip:14.2.1 In the case of single-clad sheet or strip produced in
coil form, two bend tests shall be made from each end of thecoil. On double-clad sheet or strip produced in coil form, onebend test shall be made from each end of the coil.
14.2.2 In the case of single-clad sheet or strip produced indiscrete cut lengths, four bend tests shall be made on each 100or less pieces of the same heat and nominal thickness, providedthe 100 pieces weigh not less than 1000 lbs. In the event that100 pieces weigh less than 1000 lbs, four bend tests shall bemade from each 1000 lbs or less of the same heat and nominalthickness. On double-clad sheet or strip, two bend tests shall bemade on each lot as defined in the two preceding sentences.
14.2.3 On double-clad materials, the bend tests shall bemade so that one specimen will represent the alloy-claddingmetal in tension on one side while the other specimen willrepresent the alloy-cladding metal in tension on the oppositeside.
15. Test Specimens
15.1 Plate:15.1.1 The tension test specimens from plate shall conform
to the requirements prescribed in the specifications for the basemetal.
15.1.2 Bend test specimens, shall be taken from the middleof the top of the plate as rolled, at right angles to itslongitudinal axis.
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15.1.3 When required by the purchaser, the shear testspecimen shall be taken from a top or bottom corner of theplate as rolled, parallel to its longitudinal axis.
15.1.4 All tests shall be made on specimens in the samecondition of heat treatment to which the composite plate isfurnished.
15.1.5 When specified in the purchase order, additional test
specimens representing the as-furnished composite plate shallbe thermally treated to simulate a post-weld heat treatment.The temperature range, time, and cooling rates shall bespecified in the purchase order. Mechanical properties in thesimulated post-weld heat-treated condition shall meet theminimum requirements of the as-furnished composite plate.
15.1.6 For plates 11⁄2 in. (38.1 mm) and under in thickness
TABLE 1 Permissible Variations in Thickness of Cold-Rolled Strip
NOTE 1— Permissible variations in thickness are based on measurements taken3⁄8 in. (9.53 mm) in from the edge on cold-rolled strip 1 in. (25.4 mm)or over in width, and at any place on the strip on material less than 1 in. (25.4 mm) in width
SpecifiedThickness,in. (mm)
Permissible Variations in Thickness, 6, for Widths Given, in. (mm)
3 / 16 to1 / 2
(4.76 to12.7)
1 / 2 to 1(12.7 to
25.4)
1 to 1 1 / 2(25.4 to
38.1)
1 1 / 2 to 3(38.1 to
76.2)
3 to 6(76.2 to152.4)
Over 6 to 9(152.4 to
228.6)
Over 9 to12 (228.6 to
304.8)
Over 12 to16 (304.8 to
406.4)
Over 16 to20 (406.4 to
508.0)
Over 20 to23 15 / 16(508.0 to
608.1)
0.249 to 0.161 (6.632to 4.09), incl
0.002(0.0508)
0.002(0.0508)
0.003(0.0762)
0.003(0.0762)
0.004(0.1016)
0.004(0.1016)
0.004(0.1016)
0.005(0.1270)
0.006(0.1524)
0.006(0.1524)
0.160 to 0.100 (4.08 to2.54), incl
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.003(0.0762)
0.004(0.1016)
0.004(0.1016)
0.004(0.1016)
0.005(0.1270)
0.005(0.1270)
0.099 to 0.069 (2.53 to1.75), incl
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.003(0.0762)
0.003(0.0762)
0.003(0.0762)
0.004(0.1016)
0.004(0.1016)
0.004(0.1016)
0.068 to 0.050 (1.74 to1.27), incl
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.003(0.0762)
0.003(0.0762)
0.003(0.0762)
0.003(0.0762)
0.004(0.1016)
0.004(0.1016)
0.049 to 0.040 (1.26 to1.02), incl
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.0025(0.0635)
0.003(0.0762)
0.003(0.0762)
0.003(0.0762)
0.004(0.1016)
0.004(0.1016)
0.039 to 0.035 (1.01 to0.88), incl
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.002(0.0508)
0.0025(0.0635)
0.003(0.0762)
0.003(0.0762)
0.003(0.0762)
0.003(0.0762)
0.003(0.0762)
0.034 to 0.032 (0.87 to0.81), incl
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.002(0.051)
0.0025(0.064)
0.0025(0.064)
0.0025(0.064)
0.003(0.0762)
0.003(0.0762)
0.031 to 0.029 (0.80 to0.74), incl
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.002(0.051)
0.0025(0.051)
0.0025(0.064)
0.0025(0.064)
0.003(0.0762)
0.003(0.0762)
0. 028 to 0.026 (0.73to 0.66), incl
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.002(0.051)
0.002(0.051)
0.002(0.051)
0.0025(0.064)
0.003(0.0762)
0.025 to 0.023 (0.65 to0.58), incl
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.002(0.051)
0.002(0.051)
0.002(0.051)
0.0025(0.064)
0.0025(0.064)
0.022 to 0.020 (0.57 to0.51), incl
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.002(0.051)
0.002(0.051)
0.002(0.051)
0.0025(0.064)
0.0025(0.064)
0.019 to 0.017 (0.50 to0.43), incl
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.0015(0.038)
0.002(0.051)
0.002(0.051)
0.002(0.051)
0.016 to 0.015 (0.42 to0.38), incl
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.002(0.051)
0.002(0.051)
0.014 to 0.013 (0.37 to0.33), incl
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.002(0.051)
0.002(0.051)
0.012 (0.30) 0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.011 (0.28) 0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.0015(0.038)
0.0015(0.038)
0.010 (0.25) 0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.001(0.025)
0.0015(0.038)
0.0015(0.038)
0.009 to 0.006 (0.23 to0.15), incl
0.00075(0.019)
0.00075(0.019)
0.00075(0.019)
0.00075(0.019)
0.00075(0.019)
. . . . . . . . . . . . . . .
Under 0.006 (Under0.15)
0.005(0.013)
0.005(0.013)
0.005(0.013)
0.005(0.013)
0.005(0.013)
. . . . . . . . . . . . . . .
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tension test specimens shall be the full thickness of thematerial, except as specified in 8.1.1.1 and 8.1.1.2, and thebend test specimen shall be full thickness of the material andshall be machined to the form and dimensions shown in Fig. 2,or may be machined with both edges parallel.
15.1.7 For plates over 11⁄2 in. (38.1 mm) in thickness,tension tests shall be of the form shown in Fig. 3 and shall beof all base steel conforming to the requirements of thespecification for the base steel.
15.1.8 For plates over 11⁄2 in. (38.1 mm) in thickness thebend test specimens need not be greater in thickness than 11⁄2in.but shall not be less than 11⁄2in. Specimens shall be of the formand dimensions shown in Fig. 2. In reducing the thickness ofthe specimen, both the alloy cladding and the base steel shallbe machined so as to maintain the same ratio of clad metal tobase steel as is maintained in the plate, except that thethickness of the clad metal need not be reduced below1⁄8in.(3.17).
15.1.9 The side of the bend test specimen may have thecorners rounded to a radius not over1⁄8in. (1.58 mm) for plates,2 in. (50.8 mm) and under in thickness, and not over1⁄8 in.
(3.17 mm) for plates over 2 in. in thickness.15.2 Sheet and Strip:15.2.1 Bend test specimens from sheet and strip shall be of
the full thickness of the material and shall have a width equalto six times the thickness but not less than 1 in. (25.4 mm). Thelength shall be equal to the width of the sheet or strip but in nocase longer than 12 in. (304.8 mm). The edges of the testspecimen may be rounded to a radius equal to one half thethickness.
15.2.2 Any test specimen used for the determination of theminimum thickness of alloy-cladding metal shall have dis-torted metal, due to burning or shearing completely removed.
16. Inspection
16.1 The manufacturer shall afford the inspector all reason-able facilities, without charge, to satisfy him that the materialis being furnished in accordance with this specification. Alltests (except product analysis) and inspection shall be made atthe place of manufacture prior to shipment, unless otherwisespecified, and shall be so conducted as not to interfereunnecessarily with the operation of the works.
TABLE 2 Permissible Variations in Dimensions and Weight of Standard Sheet (No. 1 and No. 2 Finishes)
Specified Thickness, in. (mm) Permissible Variations in Thickness, 6, in. (mm)
0.005 (0.127) 0.001 (0.025)0.006 to 0.007 (0.152 to 0.178) 0.0015 (0.038)0.008 to 0.016 (0.203 to 0.406) 0.002 (0.051)0.0161 to 0.026 (0.409 to 0.660) 0.003 (0.076)0.027 to 0.040 (0.686 to 1.016) 0.004 (0.102)0.041 to 0.058 (1.041 to 1.473) 0.005 (0.127)0.059 to 0.072 (1.499 to 1.829) 0.006 (0.152)0.073 to 0.083 (1.854 to 2.108) 0.007 (0.178)0.084 to 0.098 (2.133 to 2.489) 0.008 (0.203)0.099 to 0.114 (2.515 to 2.896) 0.009 (0.229)0.115 to 0.130 (2.921 to 3.302) 0.010 (0.254)0.131 to 0.145 (3.327 to 3.683) 0.012 (0.305)0.146 to 0.176 (3.708 to 4.470) 0.014 (0.356)
Specified Width, in. (mm)APermissible Variations in Width, in. (mm)
Plus Minus
Up to 42 (1066.8)42 and Over (1066.8 and Over)
1 / 16 (1.59)1 / 8 (3.18)
00
Specified Length, in. (mm)APermissible Variations in Length, in. (mm)
Plus Minus
Up to 120 (3048)120 and Over (3048 and Over)
1 / 16 (1.59)1 / 8 (3.18)
00
WeightPermissible variations in weight apply only to polished finishes.The actual weight of any one item of an ordered thickness and
size in any finish is limited in overweight by thefollowing tolerances:
Estimated Permissible Variations, Actual Weight Over theEstimated Weight, %B
Any item of 5 sheets or less, or any item estimated to weigh 200 lb (90.72kg) or less
10
Any item of more than 5 sheets, and estimated to weigh more than 200 lb(90.72 kg)
7.5
A Sheet 0.131 in. (3.33 mm) and over in thickness, regardless of size, may have permissible variations of 61⁄4 in. (6.35 mm) in width and in length, respectively.B There is no under variation in weight for No. 1 and No. 2 finishes, these finishes being limited in under variations only by the permissible variations in thickness. Polished
sheets may actually weigh as much as 5 % less than the estimated weight. Estimated weight of the composite plates may be calculated using the following weights of thecomponent materials:
Weight per Square Foot for Material1 in. in Thickness, lb
Steel 40.8Chromium steel cladding 41.2
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17. Rejection and Rehearing
17.1 Unless otherwise specified, any rejection based on testsmade in accordance with Section 8 shall be reported to themanufacturer within five working days from the receipt ofsamples by the purchaser.
17.2 Material that shows injurious defects subsequent to itsacceptance at the manufacturer’s work will be rejected, and themanufacturer shall be notified.
17.3 Samples tested in accordance with Section 8 thatrepresent rejected material shall be preserved for 3 weeks fromthe date of the test report. In case of dissatisfaction with theresults of the tests, the manufacturer may make claim forrehearing within that time.
18. Certification
18.1 The chemical analysis of the base metal shall becertified to the purchaser by the manufacturer.
18.2 The results of the tests in Section 8 shall be reported tothe purchaser or his representative.
19. Product Marking
19.1 Except as specified in 19.2, the name or brand of themanufacturer, the manufacturer’s test identification number,the class of the base steel, the type number of the alloy-cladding metal and the specified minimum tensile strengthshall be legibly stamped on each finished single-clad plate intwo places on the base steel side not less than 12 in. (304.8mm) from the edges. The manufacturer’s identification numbershall be legibly stamped on each test specimen.
19.2 For double-clad material or for material under1⁄4 in.(6.35 mm) in thickness, the marking specified in 19.1 shall belegibly stenciled instead of stamped.
TABLE 3 Permissible Variations in Dimensions of Cold-Rolled Strip
Edge Description Specified Width, in. (mm) Specified Thickness, in. (mm) Permissible Variations inWidth, 6, in. (mm)
No. 1 Round or square edge rolled 9 / 32 (7.14) or underOver 9 / 32 to 3 / 4 (7.14 to 19.05), incl
1 / 16 (1.59) or under3 / 32 (2.39) or under
0.005 (0.125)0.005 (0.125)
Over 3 / 4 to 5 (19.05 to 127.0), incl 1 / 8 (3.18) or under 0.005 (0.125)No. 5 Square rolled or filed,
after slitting9 / 32 (7.14) or underOver 9 / 32 to 3 / 4 (7.14 to 19.05), incl
1 / 16 (1.59) or under3 / 32 (2.39) or under
0.005 (0.125)0.005 (0.125)
Over 3 / 4 to 5 (19.05 to 127.0), incl 1 / 8 (3.18) or under 0.005 (0.125)Over 5 to 9 (127.0 to 228.6), incl 1 / 8 to 0.008 (3.18 to 0.203), incl 0.010 (0.254)Over 9 to 20 (228.6 to 508.0), incl 0.105 to 0.015 (2.667 to 0.381) 0.010 (0.254)Over 20 to 23 15 / 16 (508.0 to 608.0), incl 0.080 to 0.023 (2.03 to 0.584) 0.015 (0.381)
No. 6 Square edge, rolled 1 / 2 (12.7) or underOver 1 / 2 to 15 / 16 (12.7 to 23.81), incl
3 / 16 (4.76) or under3 / 16 to 0.025 (4.76 to 0.635), incl
0.010 (0.254)1 / 64 (0.396)
Over 15 / 16 to 2 (23.81 to 50.8), incl 1 / 4 to 0.025 (6.35 to 0.635), incl 1 / 32 (0.794)Over 2 to 6 (50.8 to 152.4), incl 1 / 4 to 0.225 (6.35 to 5.72), incl 3 / 64 (1.648)
Specified Thickness, in. (mm)
Permissible Variations in Width of No. 3 Edge Strip, in. (mm)A
Up to 2 in. (50.8) Over 2 to 6 in. (50.8 to152.4)
Over 6 to 12 in. (152.4 to304.8)
Over 12 to 23 15 / 16 , incl(304.8 to 608.0)
0.050 (1.27) or under 0.007 (0.178) 0.010 (0.254) 0.015 (0.381) 0.015 (0.381)0.051 to 0.083 (1.28 to 2.11) 0.010 (0.254) 0.012 (0.305) 0.015 (0.381) 0.020 (0.508)0.084 (2.12) or Over 0.012 (0.305) 0.015 (0.381) 0.018 (0.457) 0.020 (0.508)
Specified Length, ft (cm) Permissible Variations in Length, 6, in. (mm)
Up to 5, incl 3 / 8 (9.53)Over 5 (152.40) to 10 (304.8), incl 1 / 2 (12.7)Over 10 (304.8) to 20 (609.6), incl 5 / 8 (15.88)Over 20 (609.6) to 30 (914.4), incl 3 / 4 (19.05)Over 30 (914.4) to 40 (1219.2), incl 1 (25.4)Over 40 (1219.2) to 60 (1828.8), incl 1 1 / 2 (38.1)Over 60 (1828.8) to 90 (2743.2), incl 2 (50.8)Over 90 (2743.2) to 200 (6096.0), incl 2 1 / 2 (63.5)
Specified Width, in. (mm) Permissible CamberA,B
1 1 / 2 and under (38.1 and under) 1 / 2 in. in any 8 ft length (12.7 mm in any 243.84 cm)Over 1 1 / 2 to 23 15 / 16 (over 38.1 to 608.0), incl 1 / 4 in. in any 8 ft length (6.35 mm in any 243.84 cm)
A These permissible variations are plus or minus. If variation is desired all one way, double the figure indicated.B Camber shall be determined by placing an 8-ft (2.44-m) straightedge against the concave side of the strip.
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TABLE 4 Permissible Variations in Dimensions of Hot-Rolled Strip
Specified Thickness, Bwg or in. (mm) Permissible Variations in Thickness, 6, in. (mm)
5 in. (127 mm) andUnder in Width
Over 5 to 10, incl(127 to 254 mm)
in Width
Over 10 to 15, incl(254 to 381 mm)
in Width
Over 15 to 23 15 / 16 , incl(381 to 608 mm)
in Width
No. 23 to No. 18, incl 0.003 (0.076) 0.004 (0.102) . . . . . .No. 17 to No. 11, incl 0.004 (0.102) 0.005 (0.127) 0.006 (0.152) 0.007 (0.178)No. 10 to 0.187 (4.75), incl 0.005 (0.127) 0.006 (0.152) 0.007 (0.178) 0.008 (0.203)0.188 to 0.249 (4.76 to 6.32), incl 0.006 (0.152) 0.007 (0.178) 0.008 (0.203) 0.009 (0.229)
Specified Width, in. (mm) Permissible Variation in Width, in. (mm)
Plus Minus
Up to 2 (25.4 to 50.8), incl 1 / 32 (0.794) 1 / 32 (0.794)Over 2 to 5 (50.8 to 127), incl 3 / 64 (1.911) 3 / 64 (1.911)Over 5 to 10 (127 to 254), incl 1 / 16 (1.588) 1 / 16 (1.588)Over 10 to 15 (254 to 381), incl 3 / 32 (2.381) 3 / 32 (2.381)Over 15 to 20 (381 to 508), incl 1 / 8 (3.175) 1 / 8 (3.175)Over 20 to 23 15 / 16 (508 to 608), incl 5 / 32 (3.969) 5 / 32 (3.969)
Specified Length, ft (cm) Permissible Variations in Length, in. (mm)
Up to 3 in. (76.2 mm) in Width Over 3 to 6 in. (76.2 to 152.4 mm)in Width
Over 6 in. (152.4 mm) in Width
+ − + − + −
Up to 5 (152.4)Over 5 to 10 (152.4 to 304.8), incl
1 / 4 (6.35)3 / 8 (9.53)
00
3 / 8 (9.53)1 / 2 (12.7)
00
1 / 2 (12.7)3 / 4 (19.1)
00
Over 10 to 20 (304.8 to 609.6), incl 1 / 2 (12.7) 0 5 / 8 (15.88) 0 1 (25.4) 0Over 20 to 30 (609.6 to 914.4), incl 3 / 4 (19.1) 0 3 / 4 (19.1) 0 1 1 / 4 (31.8) 0Over 30 to 40 (914.4 to 1219.2), incl 1 (25.4) 0 1 (25.4) 0 1 1 / 2 (38.1) 0Over 40 (1219.2) 1 1 / 2 (38.1) 0 1 1 / 2 (38.1) 0 1 3 / 4 (44.5) 0
Permissible Camber
Strip shall be as straight as practicable and not more than 1 / 4 in. (6.35 mm) out of line in any 8 ft (2.44 m) of length, with camber measurement taken on theconcave edge.
TABLE 5 Permissible Variations in Thickness and Overweights of Plates
ThicknessA
All plates shall be ordered to thickness and not to weight per square foot. No plates shall vary more than 0.01 in. (0.254 mm) under the thickness ordered, and theoverweight of each lotB in each shipment shall not exceed the amount given in the table below.
WeightC
Specified Thickness, in. (mm) Permissible Excess in Average Weight per Square Foot Plates for Widths Given in Inches (mm). Expressed in Percentage ofNominal Weight
Under 48(1219.2)
48(1219.2)
to 60(1524.0),
excl
60(1524.0)
to 72(1828.8),
excl
72(1828.8)
to 84(2133.6),
excl
84(2133.6)
to 96(2438.4),
excl
96(2438.4)to 108
(2743.2),excl
108(2743.2)to 120
(3048.0),excl
120(3048.0)to 132
(3352.8),excl
132(3352.8)to 144
(3657.6),excl
3 / 16 (4.76) to 1 / 4 (6.35),excl
10.5 12.0 13.5 15.0 18.0 . . . . . . . . . . . .
1 / 4 (6.35) to 5 / 16 (7.94), excl 9.0 10.5 12.0 13.5 15.0 18.0 21.0 24.0 28.55 / 16 (7.94) to 3 / 8 (9.52), excl 7.5 9.0 10.5 12.0 13.5 15.0 18.0 21.0 25.53 / 8 (9.52) to 7 / 16 (11.11), excl 7.0 7.5 9.0 10.5 12.0 13.5 15.0 18.0 22.57 / 16 (11.11) to 1 / 2 (12.7), excl 6.0 7.0 7.5 9.0 10.5 12.0 13.5 15.0 19.51 / 2 (12.7) to 5 / 8 (15.88), excl 5.5 6.0 7.0 7.5 9.0 10.5 12.0 13.5 16.55 / 8 (15.88) to 3 / 4 (19.05), excl 4.5 5.5 6.0 7.0 7.5 9.0 10.5 12.0 13.53 / 4 (19.05) to 1 (25.4), excl 4.0 4.5 5.5 6.0 7.0 7.5 9.0 10.5 12.01 (25.4) or Over 4.0 4.0 4.5 5.5 6.0 7.0 7.5 9.0 10.5
ASpot grinding is permitted to remove surface imperfections not to exceed 0.01 in. (0.254 mm) under the specified thickness.BThe term “lot’’ means all of the plates of each group width and each group thickness.CThe weight of individual plates shall not exceed the nominal weight by more than one and one-third times the amount prescribed in this table.
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Metric Equivalents
in. mm in. mm
0.01 0.254 1½ 38.1! 3.17 2 50.8¼ 6.35 3 76.21 25.4 8 203.2
NOTE 1—When necessary, it is permissible to use a narrower specimen,but in such a case the reduced portion shall be not less than 1 in. in width.
NOTE 2—Punch marks for measuring elongation after fracture shall bemade on the flat or on the edge of the specimen and within the parallelsection; either a set of nine punch marks 1 in. apart, or one or more setsof 8-in. punch marks may be used.
NOTE 3—The dimensiont is the thickness of the test specimen asprovided for in the applicable material specifications.
FIG. 2 Standard Rectangular Tension Test Specimen with 8-in.Gage Length
Metric Equivalents
in. mm in. mm
0.003 0.076 " 9.530.005 0.127 0.50 12.70.01 0.254 2 50.8! 3.18 2¼ 64.5
NOTE 1—The gage length and fillets shall be as shown, but the endsmay be of any shape to fit the holders of the testing machine in such a waythat the load shall be axial. The reduced section shall be a gradual taperfrom the ends toward the center, with the ends 0.003 to 0.005 in. larger indiameter than the center.
FIG. 3 Standard Round Tension Test Specimen with 2-in. GageLength
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