ASTM_B_90_-_B_90M_-_15.pdf

Designation:B90/B90M15Standard Specification forMagnesium-Alloy Sheet and Plate1This standard is issued under the fixed designation B90/B90M;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 This specification covers magnesium alloys in sheet andplate form designated as shown in Table 1.1.2 The values stated in either inch-pound or SI units are tobe regarded separately as standards.The SI units are shown inbrackets or in separate tables or columns.The values stated ineach system are not exact equivalents;therefore,each systemmust be used independent of the other.Combining values fromthe two systems may result in nonconformance with thespecification.1.3 Unless the order specifies the“M”specificationdesignation,the material shall be furnished to the inch-poundunits.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 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B557 Test Methods for Tension Testing Wrought and CastAluminum-and Magnesium-Alloy ProductsB557M Test Methods for Tension Testing Wrought and CastAluminum-and Magnesium-Alloy Products(Metric)B660 Practices for Packaging/Packing of Aluminum andMagnesium ProductsB954 Test Method for Analysis of Magnesium and Magne-sium Alloys by Atomic Emission SpectrometryE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical Composition2.3 Federal Standards:3Fed.Std.No.123 Marking for Shipment(Civil Agencies)Fed.Std.No.184 Identification Marking of Aluminum,Magnesium and Titanium2.4 Military Standards:3MIL-STD-129 Marking for Shipment and Storage2.5 Aerospace Materials Specification:4AMS-M-3171 MagnesiumAlloy,Processes for Pretreatmentand Prevention of Corrosion2.6 ANSI Standards5ANSI H35.2 American National Standard Dimensional Tol-erances for Aluminum Mill ProductsANSI H32.2(M)American National Standard DimensionalTolerances for Aluminum Mill Products3.Terminology3.1 Definitions:3.1.1 plate,na rolled product rectangular in cross sectionand form,of thickness 0.250 in.,or more,over 6.30 mm,either sheared or sawed edges.3.1.2 sheet,na rolled product rectangular in cross sectionand form,of thickness of 0.006 through 0.249 in.over 0.15through 6.30 mm with sheared,slit,or sawed edges.4.Ordering Information4.1 Orders for sheet and plate to this specification shallinclude the following information:4.1.1 Quantity in pieces,lbs,or kg4.1.2 Alloy(Section 5 and Table 1),4.1.3 Temper(Section 6 and Table 2),1This specification is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.04 onMagnesium Alloy Cast and Wrought Products.Current edition approved Dec.1,2015.Published January 2016.Originallyapproved in 1932.Last previous edition approved in 2013 as B90/B90M 13.DOI:10.1520/B0090_B0090M-15.2For 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.3Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/www.dodssp.daps.mil.4Available from SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/www.sae.org.5Available fromAmerical National Standards Institute,11 West 42ndStreet,NewYork,NY 10036.*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 States1 4.1.4 Thickness,width,and length,4.1.5 Surface treatment(see 8.2),4.1.6 Whether inspection is required at the manufacturersworks(see 13.1),and4.1.7 Whether certification of the material by the vendor isrequired(Section 15).5.Chemical Composition5.1 The sheet and plate shall conform to the chemicalrequirements in Table 1.6.Tensile Properties6.1 The sheet and plate shall conform to the tensile require-ments in Table 2 Table 3 unless another agreement is madebetween seller and purchaser.Properties for sizes and tempersnot shown in Table 2 Table 3 shall be as agreed upon by sellerand purchaser.7.Dimensional Tolerances7.1 Variations from the specified thickness shall not