1、Designation: A263 09 A263 12Standard Specification forStainless Chromium Steel-Clad Plate1This standard is issued under the fixed designation A263; 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 specification2 covers plate of a carbon steel or low-a
3、lloy steel base to which is integrally and continuously bonded onone or both sides a layer of stainless chromium 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 are mathematica
4、lconversions 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 Requirements f
5、or 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 General Require
6、ments 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 Products2.2 Other Standards:AS
7、ME 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 stainless chromium-steel plate, depending on whether one or bothsides are covered.3.1.2 alloy c
8、laddingthe stainless chromium steel component of the composite plate.3.1.3 base metal (backing steel)component to which the alloy cladding is applied, usually the greater percentage of thecomposite plate.3.1.4 integrally and continuously bondeda condition in which the alloy cladding and base metal a
9、re 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 necessa
10、ry 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).1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloysand is the direct respons
11、ibility of Subcommittee A01.11for Steel Plates for Boilers and Pressure Vessels.Current edition approved May 1, 2009Nov. 1, 2012. Published June 2009November 2012. Originally approved in 1943. Last previous edition approved in 20032009 asA263 03.A263 09. DOI: 10.1520/A0263-09.10.1520/A0263-12.2 For
12、ASME Boiler and Pressure Vessel Code applications see related Specification SA-263 in Section II of that Code.3 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the
13、standards Document Summary page on the ASTM website.4 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.This document is not an ASTM standard and is intended only to provide the user of an AST
14、M standard an indication 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
15、by ASTM is to be considered 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 States14.1.2 Cladding alloy specification (UNS or ASTM Specification A240/A240
16、M) and whether cladding is for corrosion allowanceonly.4.1.3 Base metal specification.4.1.4 Bond integrity Class (1, 3, or 5; see Section 13).4.1.5 Dimensions including the minimum or nominal thicknesses of the cladding alloy and the backing steel, or of the totalcomposite and if more or less restri
17、ctive thickness tolerances apply.4.1.6 Product analysis, if required (see Section 10). Specify whether applicable to the cladding alloy, backing steel, or both.4.1.7 Mechanical properties including shear test if required (see Sections 7, 8, and 9).4.1.8 Finish (see Section 12).4.1.9 Restrictions, if
18、 required, on repair by welding (see Section 14).4.1.10 Additions to the specification or special requirements.requirements such as any applicable construction code rules.4.1.11 Notification when the cladding alloy is to be used for inclusion in the design strength calculations for an applicablecons
19、truction code.NOTE 1Construction codes may dictate certain fabrication 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 wel
20、dedcomponents in the explosion bonded clad manufacturing process. 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
21、 supplementaryrequirements are available when necessary additional 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/A20
22、M.4.2.1 Nondestructive examination,4.2.2 Impact testing, and4.2.3 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 re
23、quirements of this specification are in conflict with the requirements of Specification A20/A20M, the requirementsof this specification shall prevail.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
24、 processeswhereby steel made from these primary processes is remelted using, but not limited to electroslag remelting or vacuum-arcremelting processes.5.1.2 The alloy-cladding metal may be metallurgically bonded to the base metal by any method that will produce a clad steelthat will conform to the r
25、equirements 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 welded together to form a single fabricated component.5.2 Heat TreatmentUnless otherwise specified or agreed upon between the pu
26、rchaser and the manufacturer, all plates shall befurnished in the normalized, tempered, normalized and tempered, or quenched and tempered condition as permitted by the backingsteel specification. Stress relieving of the composite plate by heating subcritically is permitted, provided the temperature
27、is 75F(40C) or more below the minimum tempering temperature (when tempered).6. Chemical Composition6.1 The composite plate shall conform to any desired combination of alloy-cladding metal and base metal as described in 6.2and 6.3 and as agreed upon between the purchaser and the manufacturer.6.2 Allo
28、y Cladding MetalThe alloy-cladding metal specified shall conform to the requirements as to chemical compositionprescribed for the respective chromium steel in Specification A240/A240M.6.3 Base MetalThe base metal shall be carbon steel or low-alloy steel conforming to the ASTM specifications for stee
29、ls forpressure vessels or other as agreed by the purchaser and the manufacturer. The base metal shall conform to the chemicalrequirements of the specification 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
30、 the composite plate for clad plates that meet all of thefollowing conditions.A263 122(1) The nominal composite gage is less than or equal to112 in. (38 mm).(2) The specified minimum tensile strength of the base steel is less than or equal to 70 000 psi (485 MPa).(3) The specified minimum yield stre
31、ngth of the base steel is less than or equal to 40 000 psi (275 MPa).The tensile properties thus determined shall be not less than the minimum and not more than 5000 psi (35 MPa) over themaximum prescribed in the specification for the base steel used. All other tensile test requirements of the speci
32、fication 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 thefollowing conditions. The properties thus determined shall meet all of the tensile test requirements for the base steel.(1) The compos
33、ite 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 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 claddi
34、ng 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 required, must be specified by the purchaser and shall consist of one of the following.7.2.1 Shear StrengthWhen required by the purchaser
35、, 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 Fig. 1. The minimum claddingthickness for shear testing shall be 0.075 in. (1.9 mm) exclusive as ordered. Testing for shear streng
36、th for clad plates with minimumcladding thickness of 0.075 in. (1.9 mm) or less shall be permitted upon agreement between the purchaser and the manufacturer.7.2.2 Bond StrengthAs an alternative to the shear strength test provided in 7.2.1, or when agreed upon by the purchaser andthe manufacturer, or
37、 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 tension tests indicated in Fig. 2 and shall be bent through an angle of180 to the bend diameters provided for in either Specification
38、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 bent portion. Greaterseparation shall be cause for rejection.7.3 Methods and practices relating to mechanical testing required by t
39、his specification shall be in accordance with the TestMethods and Definitions of A370.8. Number of Tests and Retests8.1 One or more tension tests, as required by the specifications for the base metal and, when specified, one shear test or threebond bend tests shall be made representing each plate as
40、 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 defective machining or develops flaws, it may be discarded and another specimen substituted.Metric Equivalentsin. mm in. mm0.005 0.127 1 25.4
41、18 3.18 2 12 64.534 19.1 3 76.2FIG. 1 Test Specimen and Method of Making Shear Test of Clad PlateA263 1239. 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 s
42、trength tests shall be taken at right angles to longitudinal axis of the plate.9.3 When required by the purchaser, the shear test specimen should be taken near a corner of the plate, parallel to its longitudinalaxis, or other location that is representative of the final product.9.4 For plates 112 in
43、. (38 mm) and under in thickness tension test specimens shall be full thickness of the material except asspecified 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 requirements of t
44、he specification for the base steel.9.6 The bend test specimen used 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
45、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 belowNOTE 1When necessary, it is permissible to use a nar
46、rower 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 marks 1 in. apart, or one or more
47、 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 LengthNOTE 1The gage length and fillets shall be as shown, but the ends may b
48、e of any shape to fit the holders of the testing machine in such a way thatthe load shall be axial. The reduced section shall have a gradual taper from the ends toward the center, with the ends 0.003 to 0.005 in. larger in diameterthan the center.FIG. 3 Standard Round Tension Test Specimen with 2-in
49、. Gage LengthA263 12418 in. (3.1 mm). The sides of the bend test specimen used for bond strength determination may have the corners rounded to a radiusnot over 116 in. (1.6 mm) for plates, 2 in. (50 mm) and under in thickness, and not over 18 in. (3.1 mm) for plates over 2 in. (50mm) in thickness.10. Product Analysis10.1 Product analysis may be required for the cladding alloy on the finished product. Chemical analysis may be accomplishedby wet chemical or instrumental procedures. If wet chemical procedures are used, millings may be taken only whe
