ASTM_A_240_-_A_240M_-_16a.pdf

Designation:A240/A240M16aStandard Specification forChromium and Chromium-Nickel Stainless Steel Plate,Sheet,and Strip for Pressure Vessels and for GeneralApplications1This standard is issued under the fixed designation A240/A240M;the number immediately following the designation indicates the yearof 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()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification2covers chromium,chromium-nickel,and chromium-manganese-nickel stainless steel plate,sheet,and strip for pressure vessels and for general applicationsincluding architectural,building,construction,and aestheticapplications.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 This specification is expressed in both inch-pound andSI units.However,unless the order specifies the applicable“M”specification designation(SI units),the material shall befurnished in inch-pound units.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA480/A480M Specification for General Requirements forFlat-Rolled Stainless and Heat-Resisting Steel Plate,Sheet,and StripA923 Test Methods for Detecting Detrimental IntermetallicPhase in Duplex Austenitic/Ferritic Stainless SteelsE112 Test Methods for Determining Average Grain SizeE140 Hardness Conversion Tables for Metals RelationshipAmong Brinell Hardness,Vickers Hardness,RockwellHardness,Superficial Hardness,Knoop Hardness,Sclero-scope Hardness,and Leeb HardnessE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)2.2 SAE Standard:4J 1086 Practice for Numbering Metals and Alloys(UNS)3.General Requirements3.1 The following requirements for orders for materialfurnished under this specification shall conform to the appli-cable requirements of the current edition of SpecificationA480/A480M.3.1.1 Definitions;3.1.2 General requirements for delivery;3.1.3 Ordering information;3.1.4 Process;3.1.5 Special tests;3.1.6 Heat treatment;3.1.7 Dimensions and permissible variations;3.1.8 Workmanship,finish and appearance;3.1.9 Number of tests/test methods;3.1.10 Specimen preparation;3.1.11 Retreatment;3.1.12 Inspection;3.1.13 Rejection and rehearing;3.1.14 Material test report;3.1.15 Certification;and3.1.16 Packaging,marking,and loading.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.17 on Flat-Rolled and Wrought Stainless Steel.Current edition approved Dec.1,2016.Published January 2017.Originallyapproved in 1940.Last previous edition approved in 2016 as A240/A240M 16.DOI:10.1520/A0240_A0240M-16A.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-240 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 Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001,http:/www.sae.org.*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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 4.Chemical Composition4.1 The steel shall conform to the requirements as tochemical composition specified in Table 1 and shall conform toapplicable requirements specified in Specification A480/A480M.5.Mechanical Properties5.1 The material shall conform to the mechanical propertiesspecified in Table 2.5.2 When specified by the purchaser,Charpy impact testsshall be performed in accordance with Supplementary Require-ment S1.6.Materials for High-Temperature Service6.1 The austenitic H Types shall conform to an averagegrain size of ASTM No.7 or coarser as measured by TestMethods E112.6.2 Supplementary Requirement S2 s