ASTM_B_283_-_B_283M_-_17.pdf

Designation:B283/B283M17Standard Specification forCopper and Copper-Alloy Die Forgings(Hot-Pressed)1This standard is issued under the fixed designation B283/B283M;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 specification establishes the requirements for cop-per and copper alloy die forgings produced by the hot pressingmethod.The following copper and copper alloys are included:Copper or Copper AlloyUNS No.NameC11000copperC14500copper-telluriumC14700copper-sulfurC27450plumbing brassC27451plumbing brassC27453copper zinc alloyC28500copper-zinc brassC35330leaded brassC36500leaded Muntz metalC37000free-cutting Muntz metalC37700forging brassC46400naval brassC46750tin brassC48200medium leaded naval brassC48500leaded naval brassC48600naval brassC49250copper-zinc-bismuth alloyC49255copper-zinc-bismuth-nickel alloyC49260copper-zinc-bismuth alloyC49265copper-zinc-tin-bismuth,low leadedC49300copper-zinc-tin-bismuth alloyC49340copper-zinc-tin-bismuth alloyC49345copper-zinc-tin-bismuth,low leadedC49350copper-zinc-tin-bismuth alloyC49355bismuth brassC61900aluminum bronzeC62300aluminum bronze,9%C63000aluminum-nickel bronzeC63200aluminum-nickel bronzeC64200aluminum-silicon bronzeC64210aluminum-silicon bronze,6.7%C65500high-silicon bronze(A)C67500manganese bronze(A)C67600.C69300copper-zinc-siliconC70620copper-nickel 90-10C71520copper-nickel 70-30C77400nickel silver,45-10C87700silicon bronzeC87710silicon bronze1.2 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.NOTE1Nominal composition and relative forgeability ratings aregiven in Appendix X1.Copper-nickel alloys C70620 and C71520 areintended for welded applications with seawater exposure.NOTE2Guidelines for design and development of forgings areincluded in Appendix X2.NOTE3Wrought product intended for hot forging is described inSpecification B124/B124M.1.3 The following safety caveat pertains only to Section 10of this specification.This standard does not purport to addressall of the safety concerns,if any,associated with its use.It isthe responsibility of the user of this standard to establishappropriate safety and health practices and determine theapplicability of regulatory limitations prior to use.1.4 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:2B124/B124M Specification for Copper and Copper AlloyForging Rod,Bar,and ShapesB249/B249M Specification for General Requirements forWrought Copper and Copper-Alloy Rod,Bar,Shapes andForgingsB846 Terminology for Copper and Copper AlloysE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE62 Test Methods for Chemical Analysis of Copper and1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar,Wire,Shapes and Forgings.Current edition approved April 1,2017.Published April 2017.Originallyapproved in 1953.Last previous edition approved in 2016 as B283/B283M16a.DOI:10.1520/B0283_B0283M-17.2For 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)Committee.1 CopperAlloys(Photometric Methods)(Withdrawn 2010)3E75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys(Withdrawn 2010)3E478 Test Methods for Chemical Analysis of Copper Alloys2.2 Other Standards:ASME Boiler and Pressure Vessel Code4ISO 7602 Determination of Tellurium Content(HighContent)Flame Atomic Absorption SpectrometricMethod5JIS H 1068:2005 Method for Determination of Bismuth inCoppe