ASTM_A_788_-_A_788M_-_17.pdf

Designation:A788/A788M17Standard Specification forSteel Forgings,General Requirements1This standard is issued under the fixed designation A788/A788M;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 specification2covers a group of common require-ments that,unless otherwise specified in the individual productspecification,shall apply to steel forgings under any of thefollowing specifications issued by ASTM:ASTM DesignationTitleA266/A266MCarbon Steel Forgings for Pressure VesselComponentsA288Carbon and Alloy Steel Forgings for MagneticRetaining Rings for Turbine GeneratorsA289/A289MAlloy Steel Forgings for Nonmagnetic Retain-ing Rings for GeneratorsA290/A290MCarbon and Alloy Steel Forgings for Rings forReduction GearsA291/A291MSteel Forgings,Carbon and Alloy,for Pinions,Gears,and Shafts for Reduction GearsA336/A336MAlloy Steel Forgings for Pressure and High-Temperature PartsA372/A372MCarbon and Alloy Steel Forgings for Thin-Walled Pressure VesselsA427/A427MWrought Alloy Steel Rolls for Cold and HotReductionA469/A469MVacuum-Treated Steel Forgings for GeneratorRotorsA470/A470MVacuum-Treated Carbon and Alloy SteelForgings for Turbine Rotors and ShaftsA471/A471MVacuum-Treated Alloy Steel Forgings for Tur-bine Rotor Disks and WheelsA504/A504MWrought Carbon Steel WheelsA508/A508MQuenched and Tempered Vacuum-TreatedCarbon and Alloy Steel Forgings for Pres-sure VesselsA521/A521MSteel,Closed-Impression Die Forgings forGeneral Industrial UseA541/A541MQuenched and Tempered Carbon and AlloySteel Forgings for Pressure Vessel Compo-nentsA579/A579MSuperstrength Alloy Steel ForgingsA592/A592MHigh-Strength Quenched and Tempered Low-Alloy Steel Forged Parts for Pressure Ves-selsA646/A646MPremium Quality Alloy Steel Blooms and Bil-lets for Aircraft and Aerospace ForgingsA649/A649MForged Steel Rolls Used for Corrugating Pa-per MachineryA668/A668MSteel Forgings,Carbon and Alloy,for GeneralIndustrial UseA711/A711MSteel Forging StockA723/A723MAlloy Steel Forgings for High-Strength Pres-sure Component ApplicationA729/A729MCarbon and Alloy Steel Axles,Heat Treated,for Mass Transit and Electric Railway Ser-viceA765/A765MCarbon Steel and Low-Alloy Steel Pressure-Vessel-Component Forgings with Manda-tory Toughness RequirementsA768/A768MVacuum-Treated 12%Chromium Alloy SteelForgings for Turbine Rotors and ShaftsA837/A837MSteel Forgings,Alloy,for Carburizing Applica-tionsA859/A859MAge-Hardening Alloy Steel Forgings for Pres-sure Vessel ComponentsA891/A891MPrecipitation Hardening Iron Base SuperalloyForgings for Turbine Rotor Disks andWheelsA909/A909MSteel Forgings,Microalloy,for General Indus-trial UseA940/A940MVacuum Treated Steel Forgings,Alloy,Differ-entially Heat Treated,for Turbine RotorsA965/A965MSteel Forgings,Austenitic,for Pressure andHigh Temperature PartsA982/A982MSteel Forgings,Stainless,for Compressorand Turbine AirfoilsA983/A983MSpecification for Continuous Grain FlowForged Carbon and Alloy Steel Crankshaftsfor Medium Speed Diesel EnginesA986/A986MMagnetic Particle Examination of ContinuousGrain Flow Crankshaft ForgingsA1021/A1021MMartensitic Stainless Steel Forgings andForging Stock for High-Temperature Ser-viceA1049/A1049MStainless Steel Forgings,Ferritic/Austenitic(Duplex),for Pressure Vessels and RelatedComponents1.2 In case of conflict in requirements,the requirements ofthe individual product specifications shall prevail over those ofthis specification.1.3 The purchaser may specify additional requirements(see4.2.3)that do not negate any of the provisions of either thisspecification or of the individual product specifications.Theacceptance of any such additional requirements shall bedependent on negotiations with the supplier and must beincluded in the order.1.4 If,by agreement,forgings are to be supplied in apartially completed condition,that is,all of the provisions of1This 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 1984.Last previous edition approved in 2016 as A788/A788M-16a.DOI:10.1520/A0788_A0788M-17.2For ASME Boiler and Pressure Vessel Code applications,see related Specifi-cation SA788 in Section II of that code.*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 theDevelopm