ASTM_A_370_-_18.pdf

Designation:A37018Standard Test Methods and Definitions forMechanical Testing of Steel Products1This standard is issued under the fixed designation A370;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()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 These test methods2cover procedures and definitionsfor the mechanical testing of steels,stainless steels,and relatedalloys.The various mechanical tests herein described are usedto determine properties required in the product specifications.Variations in testing methods are to be avoided,and standardmethods of testing are to be followed to obtain reproducibleand comparable results.In those cases in which the testingrequirements for certain products are unique or at variance withthese general procedures,the product specification testingrequirements shall control.1.2 The following mechanical tests are described:SectionsTension6 to 14Bend15Hardness16Brinell17Rockwell18Portable19Impact20 to 30Keywords321.3 Annexes covering details peculiar to certain productsare appended to these test methods as follows:AnnexBar ProductsAnnex A1Tubular ProductsAnnex A2FastenersAnnex A3Round Wire ProductsAnnex A4Significance of Notched-Bar Impact TestingAnnex A5Converting Percentage Elongation of Round Specimens toEquivalents for Flat SpecimensAnnex A6Testing Multi-Wire StrandAnnex A7Rounding of Test DataAnnex A8Methods for Testing Steel Reinforcing BarsAnnex A9Procedure for Use and Control of Heat-Cycle SimulationAnnex A101.4 The values stated in inch-pound units are to be regardedas the standard.1.5 When this document is referenced in a metric productspecification,the yield and tensile values may be determined ininch-pound(ksi)units then converted into SI(MPa)units.Theelongation determined in inch-pound gauge lengths of 2 or8 in.may be reported in SI unit gauge lengths of 50 or 200 mm,respectively,as applicable.Conversely,when this document isreferenced in an inch-pound product specification,the yieldand tensile values may be determined in SI units then con-verted into inch-pound units.The elongation determined in SIunit gauge lengths of 50 or 200 mm may be reported ininch-pound gauge lengths of 2 or 8 in.,respectively,asapplicable.1.5.1 The specimen used to determine the original unitsmust conform to the applicable tolerances of the original unitsystem given in the dimension table not that of the convertedtolerance dimensions.NOTE1This is due to the specimen SI dimensions and tolerancesbeing hard conversions when this is not a dual standard.The user isdirected to Test Methods A1058 if the tests are required in SI units.1.6 Attention is directed to ISO/IEC 17025 when there maybe a need for information on criteria for evaluation of testinglaboratories.1.7 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3A623 Specification for Tin Mill Products,General Require-ments1These test methods and definitions are under the jurisdiction of ASTMCommittee A01 on Steel,Stainless Steel and Related Alloys and are the directresponsibility of Subcommittee A01.13 on Mechanical and Chemical Testing andProcessing Methods of Steel Products and Processes.Current edition approved Dec.1,2018.Published January 2019.Originallyapproved in 1953.Last previous edition approved in 2017 as A370 17a.DOI:10.1520/A0370-18.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-370 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.*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)Commi