ASTM_A_473_-_17.pdf

Designation:A47317Standard Specification forStainless Steel Forgings1This standard is issued under the fixed designation A473;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 austenitic,austenitic-ferritic,ferritic,and martensitic stainless steel forgings for general use,and for low-or high-temperature service.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 Supplementary requirements from Specification A788/A788M may be specified when additional testing,inspection,or processing is required.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:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA788/A788M Specification for Steel Forgings,General Re-quirementsA1058 Test Methods for Mechanical Testing of SteelProductsMetricE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)3.Ordering Information3.1It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification.Such requirements may include,but are notlimited to,the following:3.1.1 Quantity(weight or number of pieces),3.1.2 Dimensions,including prints or sketches,3.1.3 Name of material(stainless steel forgings),3.1.4 Type or UNS designation(Table 1),3.1.5 Condition(Table 2),and3.1.6 ASTM designation and date of issue.3.1.7 Test for magnetic permeability if specified by cus-tomer purchase order when ordering Types 207 and 205.3.1.8 Special requirements.3.2 If possible the intended end use of the item should begiven on the purchase order especially when the item is orderedfor a specific end use or uses.NOTE1A typical ordering description is as follows:5 stainless steelforgings,Type 410,Designation A,ASTM Specification A473 dated_.End use:pump blocks for oil well equipment.4.General Requirements4.1 Material supplied to this specification shall conform tothe requirements of Specification A788/A788M,which out-linesadditionalorderinginformation,manufacturingrequirements,testing and retesting methods and procedures,marking,certification,product analysis variations,and addi-tional supplementary requirements.4.2 If the requirements of this specification are in conflictwith the requirements of Specification A788/A788M,therequirements of this specification shall prevail.5.Manufacture5.1 Material for forgings shall consist of ingots or blooms,billets,slabs,or bars,either forged or rolled from an ingot,andcut to the required length by a suitable process.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.06 on Steel Forgings and Billets.Current edition approved May 1,2017.Published May 2017.Originallyapproved in 1962.Last previous edition approved in 2016 as A473-16.DOI:10.1520/A0473-17.2For 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 5.2 The material shall be forged by hammering,pressing,rolling,extruding,or upsetting.It shall be brought as nearly aspossible to the finished shape and size by hot-working;andshall be processed,if practicable,so as to cause metal-flowduring the hot-working operation in the direction most favor-able for resisting the stresses encountered in service as may beindicated to the manufacturer by the purchaser.TABLE 1 Chemical RequirementsAUNSDesig-nationBTypeNumberCarbon,%Manga-nese,%Phos-