1、Designation: A264 11Standard Specification forStainless Chromium-Nickel Steel-Clad Plate1This standard is issued under the fixed designation A264; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification2covers plate of a carbon steel orlow-allo
3、y steel base to which is integrally and continuouslybonded on one or both sides a layer of stainless chromium-nickel steel. The material is generally intended for pressurevessel use.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathemati
4、calconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:3A6/A6M Specification for General Requirements for RolledStructural Steel Bars, Plates, Shapes, and Sheet PilingA20/A20M Specification for General Requirements f
5、orSteel Plates for Pressure VesselsA240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for PressureVessels and for General ApplicationsA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA480/A480M Specification for General Requireme
6、nts forFlat-Rolled Stainless and Heat-Resisting Steel Plate,Sheet, and StripA578/A578M Specification for Straight-Beam UltrasonicExamination of Rolled Steel Plates for Special Applica-tionsA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel Products2.2 Other Standards:ASME
7、Code Boiler and Pressure Vessel Code, Section IX,Welding Qualifications43. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 This material is considered as single-clad or double-clad corrosion-resisting chromium-nickel steel plate, depend-ing on whether one or both sides are covere
8、d.3.1.2 alloy claddingthe stainless chromium-nickel steelcomponent of the composite plate.3.1.3 base metal (backing steel)component to which thealloy cladding is applied, usually the greater percentage of thecomposite plate and usually consisting of carbon or low-alloysteel.3.1.4 integrally and cont
9、inuously bondedthe process bywhich the alloy cladding and base metal are brought together toform a metallurgical bond at essentially the entire interface ofthe two metals by means other than those processes that do notproduce a homogeneous composite plate.4. Ordering Information4.1 It is the respons
10、ibility 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 (weight or number of pieces).4.1.2 Cladding alloy specification, (UNS or ASTM Specifi-cation A240/A2
11、40M and whether cladding is for corrosionallowance only),4.1.3 Base metal specification.4.1.4 Bond integrity Class (1, 3, or 5).4.1.5 Dimensions including the minimum or nominal thick-ness of the cladding alloy, and the backing steel, or of the totalcomposite plate and if more or less restrictive th
12、icknesstolerances apply.4.1.6 Product analysis, if required (see Section 10). Specifywhether applicable to the cladding alloy, backing steel or both.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of Sub
13、committeeA01.11 on Steel Plates for Boilers and Pressure Vessels.Current edition approved Nov. 1, 2011. Published November 2011. Originallyapproved in 1943. Last previous edition approved in 2009 as A264 09. DOI:10.1520/A0264-11.2For ASME Boiler and Pressure Vessel Code applications see related Spec
14、ifi-cation SA-264 in Section II of that Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Available from
15、American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 194
16、28-2959, United States.4.1.7 Mechanical properties, including shear test if required.4.1.8 Finish (see Section 12).4.1.9 Restrictions, if required, on repair by welding (seeSection 14).4.1.10 Additions to the specification or special require-ments.4.1.11 Corrosion testing if applicable.4.2 In additi
17、on to the basic requirements of this specificationand the backing steel specification, certain supplementaryrequirements are available when necessary to meet end userequirements. These include:4.2.1 Nondestructive examination,4.2.2 Impact testing, and4.2.3 Simulated Post-Weld Heat Treatment of Mecha
18、nicalTest Coupons (SPWHT).4.3 The purchaser is referred to the listed supplementaryrequirements in this specification and to the detailed require-ments in Specification A20/A20M.4.4 If the requirements of this specification are in conflictwith the requirements of Specification A20/A20M, the require-
19、ments of this specification shall prevail.4.5 Special tests.5. Materials and Manufacture5.1 Process:5.1.1 The steel shall be made by the open-hearth, electric-furnace, or basic-oxygen processes, or by secondary processeswhereby steel made from these primary processes is remeltedusing, but not limite
20、d to electroslag remelting or vacuum-arcremelting processes.5.1.2 The alloy-cladding metal may be metallurgicallybonded to the base metal by any method that will produce aclad steel that will conform to the requirements of thisspecification.5.2 Heat Treatment:5.2.1 Unless otherwise specified or agre
21、ed upon betweenthe purchaser and the manufacturer, all austenitic stainless steelclad 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
22、-alloy steels the above heattreatment shall be followed by a tempering treatment. In thecase of clad plate manufactured without hot rolling, the basemetal and alloy cladding components may be heat treatedseparately as appropriate prior to bonding.5.2.2 Duplex stainless steel clad plates shall be pro
23、vided ina heat treated condition as agreed upon between the purchaserand the manufacturer.5.2.3 When plates are to be cold formed, or when otherwiserequired by the base metal specification, the purchaser mayspecify that such plates, following solution annealing, be heattreated for grain refinement o
24、f the base metal by normalizingand either air cooled or water quenched as appropriate.6. Chemical Composition6.1 The composite plate may conform to any desired com-bination of alloy-cladding metal and base metal as described in6.2 and 6.3 and as agreed upon between the purchaser and themanufacturer.
25、6.2 Alloy Cladding MetalThe 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 A240/A240M.6.3 Base MetalThe base metal shall be carbon steel orlow-alloy steel conforming to the AS
26、TM specifications forsteel for pressure vessels, or other, as agreed by the purchaserand the manufacturer. The base metal shall conform to thechemical requirements of the specification to which it isordered.7. Mechanical Properties7.1 Tensile Requirements:7.1.1 The tensile properties shall be determ
27、ined by atension test of the composite plate for clad plates that meet allof the following conditions.(1) The composite gage is less than or equal to 112 in. (38mm).(2) The specified minimum tensile strength of the base steelis less than or equal to 70 000 psi (485 MPa)(3) The specified minimum yiel
28、d strength of the base steelis less than or equal to 40 000 psi (275 MPa).(4) The tensile properties thus determined shall be not lessthan the minimum and not more than 5000 psi (35 MPa) overthe maximum prescribed in the specification for the base steelused. All other tensile test requirements of th
29、e specification forthe base steel shall be met.7.1.2 The tensile properties shall be determined by atension test of the base steel only for clad plates that meet oneof the following conditions. The properties thus determinedshall meet all of the tensile test requirements for the base steel.(1) The c
30、omposite gage is greater than 112 in. (38 mm).(2) The specified minimum tensile strength of the base steelis greater than 70 000 psi (485 MPa).(3) The specified minimum yield strength of the base steelis greater than 40 000 psi (275 MPa).7.1.3 If the cladding is for corrosion allowance only, theclad
31、ding need not be included in the tensile test. The tensileproperties thus determined shall meet the base steel require-ments.7.2 Tests for strength of the bond, when required, must bespecified by the purchaser and shall consist of one of thefollowing.7.2.1 Shear StrengthWhen required by the purchase
32、r, theminimum 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. The minimumcladding thickness for shear testing shall be 0.075 in. (1.9 mm),exclusive as ordered. Testing for shear strengt
33、h for clad plateswith minimum cladding thickness of 0.075 in. (1.9 mm) or lessshall be permitted upon agreement between the purchaser andthe manufacturer.7.2.2 Bond StrengthAs an alternative to the shear strengthtest provided in 7.2.1, or when agreed upon by the purchaserand the manufacturer, or bot
34、h, three bend tests shall be madewith the alloy cladding in compression to determine the qualityof the bond. These bend tests shall be made in the manner ofthe tension tests indicated in Fig. 2 and shall be bent through anangle of 180 to the bend diameters provided for in eitherA264 112Specification
35、 A6/A6M or Specification A20/A20M, AppendixX4 or equivalent, as applicable. At least two of the three testsshall show not more than 50 % separation on both edges of thebent portion. Greater separation shall be cause for rejection.7.3 Methods and practices relating to mechanical testingrequired by th
36、is specification shall be in accordance with theTest Methods and Definitions of A370.8. Number of Tests and Retests8.1 One or more tension tests, as required by the specifica-tions for the base metal and when specified, one shear test orthree bond bend tests shall be made, representing each plate as
37、rolled. Each specimen shall be in the final condition of heattreatment required for the plate, including any SPWHT ifrequired.8.2 If any test specimen shows defective machining ordevelops flaws, it may be discarded and another specimensubstituted.9. Test Specimens9.1 The tension test specimens from
38、plate shall conform tothe requirements prescribed in the specifications for the basemetal.9.2 Bend test specimens for the alternative bond strengthtests, shall be taken at right angles to its longitudinal axis.9.3 When required by the purchaser, the shear test specimenshould be taken near a top or b
39、ottom corner of the plate asrolled, parallel to its longitudinal axis, or other location that isrepresentative of the final product.9.4 For plates 112 in. (38 mm) and under in thickness,tension test specimens shall be the full thickness of thematerial, except as specified in 7.1.2 and 7.1.3.9.5 For
40、plates over 112 in. (38 mm) in thickness, tensiontests shall be of the form shown in Fig. 3 and shall be of allbase steel conforming to the requirements of the specificationfor the base steel.9.6 The bend test specimen used for bond strength determi-nation shall be 112 in. (38 mm) wide by not more t
41、han34 in.(19 mm) in thickness and shall be machined to the form anddimensions shown in Fig. 2, or may be machined with bothedges parallel. In reducing the thickness of the specimen, boththe alloy cladding and the base steel shall be machined so as tomaintain the same ratio of clad metal to base stee
42、l as ismaintained in the plate, except that the thickness of the cladmetal need not be reduced below18 in. (3.1 mm). The sides ofthe bend test specimen used for bond strength determinationmay have the corners rounded to a radius not over116 in. (1.6Metric Equivalentsin. mm in. mm0.005 0.127 1 25.418
43、 3.18 212 64.534 19.1 3 76.2FIG. 1 Test Specimen and Method of Making Shear Test of CladPlateMetric Equivalentsin. mm in. mm0.01 0.254 112 38.118 3.17 2 50.814 6.35 3 76.21 25.4 8 203.2NOTE 1When necessary, it is permissible to use a narrower specimen,but in such a case the reduced portion shall be
44、not less than 1 in. in width.NOTE 2Punch 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 3The dimension t is th
45、e thickness of the test specimen asprovided for in the applicable material specifications.FIG. 2 Standard Rectangular Tension Test Specimen with 8-in.Gage LengthMetric Equivalentsin. mm in. mm0.003 0.07638 9.530.005 0.127 0.50 12.70.01 0.254 2 50.818 3.18 214 64.5NOTE 1The gage length and fillets sh
46、all 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
47、Tension Test Specimen with 2-in. GageLengthA264 113mm) for plates, 2 in. (50 mm) and under in thickness, and notover18 in. (3.1 mm) for plates over 2 in. (50 mm) in thickness.10. Product Analysis10.1 Product analysis may be required for the cladding alloyon finished product. Chemical analysis may be
48、 accomplishedby wet chemical or instrumental procedures. If wet chemicalprocedures are used, millings may be taken only when thecomposite plate thickness is sufficient to permit obtainingmillings without danger of contamination from the adjacentlayer. If spectrometric procedures are used, the sample
49、 shall beexposed on the center line of the cladding when there issufficient cladding thickness available so that there is nocontamination from the adjacent base metal.10.2 If product analysis is specified by the purchaser for thecladding alloy, it shall be made on a sample taken from thefinished product or a broken test specimen. For wet chemicalanalysis, in order to avoid contamination by the base platemetal, millings of cladding samples shall be taken from the testcoupon by removal and discard of all the base metal plus 40 %of the cladding thicknes
