1、Designation: A264 11 A264 12Standard 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
2、 number 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 specification2 covers plate of a carbon steel o
3、r low-alloy steel base to which is integrally and continuously bonded onone or both sides a layer of stainless chromium-nickel steel. The material is generally intended for pressure vessel use.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses a
4、re mathematicalconversions to SI units that are provided for information only and are not considered standard.2. Referenced Documents2.1 ASTM Standards:3A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet PilingA20/A20M Specification for General
5、Requirements for Steel Plates for Pressure VesselsA240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels andfor General ApplicationsA370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA480/A480M Specification for G
6、eneral Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and StripA578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special ApplicationsA751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products1 This s
7、pecification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.11on Steel Plates for Boilers and Pressure Vessels.Current edition approved Nov. 1, 2011Nov. 1, 2012. Published November 2011November 2012. O
8、riginally approved in 1943. Last previous edition approved in 20092011as A264 09.A264 11. DOI: 10.1520/A0264-11.10.1520/A0264-12.2 For ASME Boiler and Pressure Vessel Code applications see related Specification SA-264 in Section II of that Code.3 For referenced ASTM standards, visit the ASTM website
9、, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication
10、of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be consider
11、ed the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 Other Standards:ASME Code Boiler and Pressure Vessel Code, Section IX, Welding Qualification
12、s43. 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, depending onwhether one or both sides are covered.3.1.2 alloy claddingthe stainless chromium-nickel steel component of t
13、he composite plate.3.1.3 base metal (backing steel)component to which the alloy cladding is applied, usually the greater percentage of thecomposite plate and usually consisting of carbon or low-alloy steel.3.1.4 integrally and continuously bondedthe process by which the alloy cladding and base metal
14、 are brought together to forma metallurgical bond at essentially the entire interface of the two metals by means other than those processes that do not producea homogeneous composite plate.4. Ordering Information4.1 It is the responsibility of the purchaser to specify all requirements that are neces
15、sary for material ordered under thisspecification. Such requirements may include, but are not limited to, the following:4.1.1 Quantity (weight or number of pieces).4.1.2 Cladding alloy specification, (UNS or ASTM Specification A240/A240M and whether cladding is for corrosion allowanceonly),4.1.3 Bas
16、e metal specification.4.1.4 Bond integrity Class (1, 3, or 5).4.1.5 Dimensions including the minimum or nominal thickness of the cladding alloy, and the backing steel, or of the totalcomposite plate and if more or less restrictive thickness tolerances apply.4.1.6 Product analysis, if required (see S
17、ection 10). Specify whether applicable to the cladding alloy, backing steel or both.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 (see Section 14).4.1.10 Additions to the specification or special requ
18、irements.requirements such as any applicable construction code rules.4.1.11 Corrosion testing if applicable.4.1.12 Notification when the cladding alloy is to be used for inclusion in the design strength calculations for an applicableconstruction code.NOTE 1Construction codes may dictate certain fabr
19、ication requirements when the cladding is used in the design calculations that may be differentthan if the cladding is used for corrosion resistance only. This may be particularly important when the alloy cladding involves the use of weldedcomponents in the explosion bonded clad manufacturing proces
20、s. It is incumbent on the purchaser to make the clad manufacturer aware of any suchrestrictions or applications at time of order.4.2 In addition to the basic requirements of this specification and the backing steel specification, certain supplementaryrequirements are available when necessary additio
21、nal control, testing, or examination is required to meet end use requirements.These include:The purchaser is referred to the listed supplementary requirements in this specification and to the detailedrequirements in Specification A20/A20M.4.2.1 Nondestructive examination,4.2.2 Impact testing, and4.2
22、.3 Simulated Post-Weld Heat Treatment of Mechanical Test Coupons (SPWHT).4.3 The purchaser is referred to the listed supplementary requirements in this specification and to the detailed requirements inSpecification A20/A20M.4.3 If the requirements of this specification are in conflict with the requi
23、rements of Specification A20/A20M, the requirementsof this specification shall prevail.4.4 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 prima
24、ry processes is remelted using, but not limited to electroslag remelting or vacuum-arcremelting processes.4 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.A264 1225.1.2 The alloy-cladding m
25、etal may be metallurgically bonded to the base metal by any method that will produce a clad steelthat will conform to the requirements of this specification.5.1.3 For explosively bonded products, the alloy cladding metal may be comprised of two or more separate alloy plates or sheetscompletely welde
26、d together to form a single fabricated component.5.2 Heat Treatment:5.2.1 Unless otherwise specified or agreed upon between the purchaser and the manufacturer, all austenitic stainless steel cladplates shall be given a heat treatment consisting of heating to the proper temperature for the solution o
27、f the chromium carbidesin the cladding followed by individual air cooling. For base metals of air-hardening low-alloy steels the above heat treatment shallbe followed by a tempering treatment. In the case of clad plate manufactured without hot rolling, the base metal and alloy claddingcomponents may
28、 be heat treated separately as appropriate prior to bonding.5.2.2 Duplex stainless steel clad plates shall be provided in a heat treated condition as agreed upon between the purchaser andthe manufacturer.5.2.3 When plates are to be cold formed, or when otherwise required by the base metal specificat
29、ion, the purchaser may specifythat such plates, following solution annealing, be heat treated for grain refinement of the base metal by normalizing and either aircooled or water quenched as appropriate.6. Chemical Composition6.1 The composite plate may conform to any desired combination of alloy-cla
30、dding metal and base metal as described in 6.2and 6.3 and as agreed upon between the purchaser and the manufacturer.6.2 Alloy Cladding MetalThe alloy-cladding metal specified shall conform to the requirements as to chemical compositionprescribed for the respective chromium-nickel or duplex steel in
31、Specification A240/A240M.6.3 Base MetalThe base metal shall be carbon steel or low-alloy steel conforming to the ASTM specifications for steel forpressure vessels, or other, as agreed by the purchaser and the manufacturer. The base metal shall conform to the chemicalrequirements of the specification
32、 to which it is ordered.7. Mechanical Properties7.1 Tensile Requirements:7.1.1 The tensile properties shall be determined by a tension test of the composite plate for clad plates that meet all of thefollowing conditions.(1) The composite gage is less than or equal to 112 in. (38 mm).(2) The specifie
33、d minimum tensile strength of the base steel is less than or equal to 70 000 psi (485 MPa)(3) The specified minimum yield strength of the base steel is less than or equal to 40 000 psi (275 MPa).(4) The tensile properties thus determined shall be not less than the minimum and not more than 5000 psi
34、(35 MPa) over themaximum prescribed in the specification for the base steel used. All other tensile test requirements of the specification for the basesteel shall be met.7.1.2 The tensile properties shall be determined by a tension test of the base steel only for clad plates that meet one of thefoll
35、owing conditions. The properties thus determined shall meet all of the tensile test requirements for the base steel.(1) The composite gage is greater than 112 in. (38 mm).(2) The specified minimum tensile strength of the base steel is greater than 70 000 psi (485 MPa).(3) The specified minimum yield
36、 strength of the base steel is greater than 40 000 psi (275 MPa).7.1.3 If the cladding is for corrosion allowance only, the cladding need not be included in the tensile test. The tensile propertiesthus determined shall meet the base steel requirements.7.2 Tests for strength of the bond, when require
37、d, must be specified by the purchaser and shall consist of one of the following.7.2.1 Shear StrengthWhen required by the purchaser, the minimum shear strength of the alloy cladding and base metals shallbe 20 000 psi (140 MPa). The shear test, when specified, shall be made in the manner indicated in
38、Fig. 1. The minimum claddingthickness for shear testing shall be 0.075 in. (1.9 mm), exclusive as ordered. Testing for shear strength for clad plates withminimum cladding thickness of 0.075 in. (1.9 mm) or less shall be permitted upon agreement between the purchaser and themanufacturer.7.2.2 Bond St
39、rengthAs an alternative to the shear strength test provided in 7.2.1, or when agreed upon by the purchaser andthe manufacturer, or both, three bend tests shall be made with the alloy cladding in compression to determine the quality of thebond. These bend tests shall be made in the manner of the tens
40、ion tests indicated in Fig. 2 and shall be bent through an angle of180 to the bend diameters provided for in either Specification A6/A6M or Specification A20/A20M, Appendix X4 or equivalent,as applicable. At least two of the three tests shall show not more than 50 % separation on both edges of the b
41、ent portion. Greaterseparation shall be cause for rejection.7.3 Methods and practices relating to mechanical testing required by this specification shall be in accordance with the TestMethods and Definitions of A370.A264 1238. Number of Tests and Retests8.1 One or more tension tests, as required by
42、the specifications for the base metal and when specified, one shear test or threebond bend tests shall be made, representing each plate as rolled. Each specimen shall be in the final condition of heat treatmentrequired for the plate, including any SPWHT if required.8.2 If any test specimen shows def
43、ective machining or develops flaws, it may be discarded and another specimen substituted.9. Test Specimens9.1 The tension test specimens from plate shall conform to the requirements prescribed in the specifications for the base metal.9.2 Bend test specimens for the alternative bond strength tests, s
44、hall be taken at right angles to its longitudinal axis.9.3 When required by the purchaser, the shear test specimen should be taken near a top or bottom corner of the plate as rolled,parallel to its longitudinal axis, or other location that is representative of the final product.9.4 For plates 112 in
45、. (38 mm) and under in thickness, tension test specimens shall be the full thickness of the material, exceptas specified in 7.1.2 and 7.1.3.9.5 For plates over 112 in. (38 mm) in thickness, tension tests shall be of the form shown in Fig. 3 and shall be of all base steelconforming to the requirement
46、s of the specification for the base steel.Metric Equivalentsin. mm in. mm0.005 0.127 1 25.418 3.18 212 64.534 19.1 3 76.2FIG. 1 Test Specimen and Method of Making Shear Test of Clad PlateMetric 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,
47、 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 2Punch marks for measuring elongation after fracture shall be made on the flat or on the edge of the specimen and within the parallel section;either a set of nine punch ma
48、rks 1 in. apart, or one or more sets of 8-in. punch marks may be used.NOTE 3The dimension t is the thickness of the test specimen as provided for in the applicable material specifications.FIG. 2 Standard Rectangular Tension Test Specimen with 8-in. Gage LengthA264 1249.6 The bend test specimen used
49、for bond strength determination shall be 112 in. (38 mm) wide by not more than 34 in. (19 mm)in thickness and shall be machined to the form and dimensions shown in Fig. 2, or may be machined with both edges parallel. Inreducing the thickness of the specimen, both the alloy cladding and the base steel shall be machined so as to maintain the sameratio of clad metal to base steel as is maintained in the plate, except that the thickness of the clad metal need not be reduced below18 in. (3.1 mm). The sides of the bend test specimen used for bond strength
