1、Designation:B92/B92M17Standard Specification forUnalloyed Magnesium Ingot and Stick For Remelting1This standard is issued under the fixed designation B92/B92M;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.
2、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 in the form ofi
3、ngot and stick for remelting:9980A is available in ingot andstick form,and 9980B,9990A,9995A,and 9998A are gener-ally available only in ingot form.1.2 The values stated in SI units are to be regarded as aseparate standard.The values stated in each system are notexact equivalents,therefore each syste
4、m must be used inde-pendently of the other.1.3 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 Wor
5、ld Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2B951 Practice for Codification of Unalloyed Magnesium andMagnesium-Alloys,Cast and WroughtB953 Practice for Sampling Magnesium and MagnesiumAlloys for Spectrochemical AnalysisB954 Test Method for
6、 Analysis of Magnesium and Magne-sium Alloys by Atomic Emission SpectrometryE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE88 Practice for Sampling Nonferrous Metals and Alloys inCast Form for Determination of Chemical Composition3.Terminology3.1 D
7、efinitions:3.1.1 ingota cast form suitable for remelting.3.1.2 stickan extruded form substantially uniform in crosssection cut to desired length or weight.4.Ordering Information4.1 Orders for ingot and stick under this specification shallinclude the following information:4.1.1 Grade,in accordance wi
8、th the requirements of Prac-tice B951(Section 6 and Table 1),4.1.2 Quantity,in pieces or pounds kilograms,and4.1.3 Form;by agreement between the purchaser and themanufacturer the approximate form and weight of each pieceor ingot may be specified.4.1.4 For inch-pound orders specify B92,for metric ord
9、ersspecify B92M.Do not mix units.5.Materials and Manufacture5.1 No scrap shall be used in the production of magnesiumingot and stick,except such as shall accumulate at themanufacturers plants from material of similar composition andof his own manufacture.6.Chemical Composition6.1 LimitsThe material
10、shall conform to the requirementsas to chemical composition prescribed in Table 1.6.2 Sampling:6.2.1 Sufficient samples shall be taken by the manufacturerto assure conformance to the chemical composition require-ments of the alloy.Samples shall be taken from the moltenmetal in accordance with the re
11、quirements of Practice B953when the ingot is poured or from the ingot.Samples shall berepresentative of the material.6.2.2 In case of dispute,the sampling for chemical analysisshall be according to the requirements of Practice E88.If theingots are shipped in carload lots of the same alloy,not lessth
12、an four ingots shall be taken at random from the carload forsampling.If the shipment is in less than carload lots,one ingotshall be taken for sampling for each 10 000 lb 4500 kg orfraction thereof.6.3 Methods of AnalysisAny suitable method of chemicalanalysis may be used.In case of dispute,the analy
13、sis shall bemade by methods given in Test Method B954,or any other1This specification is under the jurisdiction of the ASTM Committee B07 onLight Metals and Alloys and is the direct responsibility of Subcommittee B07.04 onMagnesium Alloy Cast and Wrought Products.Current edition approved May 1,2017.
14、Published May 2017.Originallyapproved in 1933.Last previous edition approved in 2011 as B92/B92M 11.DOI:10.1520/B0092_B0092M-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,re
15、fer 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 inte
16、rnationally 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 standard methods of analysis approved by ASTM unless someother method is agreed upon by the purchaser and vendor.7.General Quality7.1 Magnesium ingot and stick shall have a clean surfaceand shall be commercially free from dirt,slag,or other foreignm
