1、Designation:A31415Standard Specification forStainless Steel Billets and Bars for Forging1This standard is issued under the fixed designation A314;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 p
2、arentheses 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 stainless steel billets and barsintend
3、ed only for forging.2.Referenced Documents2.1 ASTM Standards:2A484/A484M Specification for General Requirements forStainless Steel Bars,Billets,and ForgingsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsE527 Practice for Numbering Metals and Alloys in theUnified
4、Numbering System(UNS)2.2 Other Document:SAE J1086 Recommended Practice for Numbering Metalsand Alloys33.Ordering Information3.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification.Such requirements may include but are n
5、otlimited to the following:3.1.1 Quantity(weight or number of pieces),3.1.2 Name of material:type or UNS designation(Table 1),3.1.3 Condition,3.1.4 Cross section(round,round-cornered square,and soforth),3.1.5 Form:bar or forging billet,3.1.6 Applicable dimensions,including size,thickness,width,and l
6、ength,3.1.7 ASTM designation and date of issue,3.1.8 Preparation for delivery(see Specification A484/A484M),3.1.9 Marking(see Specification A484/A484M),and3.1.10 Exceptions to the specification or special require-ments.3.2 If possible,the intended use of the item should be givenon the purchase order
7、 especially when the item is ordered fora specific end use or uses.NOTE1A typical ordering description is as follows:10 000 lb,Type420,annealed,round-cornered square billets,ASTM A314 datedfor valve parts.4.Manufacture4.1 AnnealingBlooms and billets of the 400 series ofstainless steel types which ar
8、e highly hardenable,such as Types414,420,431,440A,440B,and 440C,are commonly annealedprior to shipment and so specified in order to avoid thepossibility of thermal cracking.Those grades are not normallyfurnished in the as-rolled or as-forged condition.Other hard-enable grades,such as Types 403,410,4
9、16,and 416 Se,whichmay also require annealing,depending on their compositionand size,are furnished suitable for cold cutting when sospecified on the purchase order.4.2 ConditioningMaterial may be conditioned by chip-ping or grinding to remove injurious surface defects providedthe depth of conditioni
10、ng does not exceed that which will affectthe surface condition or dimensions of the article to be forgedfrom the bar or billet.5.Chemical Composition5.1 The steel shall conform to the chemical compositionprescribed in Table 1 for the respective grades.5.2 Methods and practices relating to chemical a
11、nalysisrequired by this specification shall be in accordance with TestMethods,Practices,and Terminology A751.6.Dimensions6.1 Billets and bars shall conform to the shape and dimen-sions specified by the purchaser within a permissible variationof 65%.1This specification is under the jurisdiction of AS
12、TM 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 July 15,2015.Published July 2015.Originallyapproved in 1947.Last previous edition approved in 2013 as A314 13a.DOI:1
13、0.1520/A0314-15.2For 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 Society of Automotive Engineers(SA
14、E),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 States1 TABLE 1 Chemical RequirementsUNSDesig-nationATypeNumberChem
15、ical Composition,%BCarbonMan-ganesePhos-phorusSulfurSiliconChromiumNickelMolyb-denumNitrogenOtherElementsAustenitic GradesS20161.0.154.006.000.0400.0403.004.0015.0018.004.006.00.0.080.20.S202002020.157.5010.000.0600.0301.0017.0019.004.006.00.0.25.S20910XM-190.064.006.000.0400.0301.0020.5023.5011.501
16、3.501.503.000.200.40Cb 0.100.30V 0.100.30S21800.0.107.009.000.0600.0303.504.5016.0018.008.009.00.0.080.18.S21900XM-100.088.0010.000.0600.0301.0019.0021.505.507.50.0.150.40.S21904XM-110.048.0010.000.0600.0301.0019.0021.505.507.50.0.150.40.S24000XM-290.0811.5014.500.0600.0301.0017.0019.002.253.75.0.200.40.S24100XM-280.1511.0014.000.0600.0301.0016.5019.000.502.25.0.200.45.S28200.0.1517.0019.000.0450.0301.0017.0019.00.0.751.250.400.60.S302003020.152.000.0450.0301.0017.0019.008.0010.00.0.10.S30215302
