ASTM_A_1095_-_15.pdf

Designation:A109515Standard Specification forHigh-Silicon Molybdenum Ferritic Iron Castings1This standard is issued under the fixed designation A1095;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.1.Scope1.1 This specification covers castings made of high-siliconmolybdenum ferritic iron,commonly known as SiMo.Thisspecification includes castings with microstructures of spheroi-dal graphite(SG)SiMo iron,compacted graphite(CG)SiMoiron,and mixed graphite or medium-nodularity graphite(MG)SiMo iron.MG iron microstructure comprises a mixture ofspheroidal and compacted graphite shapes.This standardspecifies the condition,chemical composition,microstructure,and other technical requirements of three grades of ferritic castirons,specified as SG SiMo,MG SiMo,and CG SiMo.1.2 No precise quantitative relationship can be stated be-tween the properties of iron in the various locations of the samecasting or between the properties of castings and those of a testspecimen cast from the same iron.1.3 The values stated in SI units are to be regarded asstandard.All chemical compositions are in mass percentage.No other units of measurement are included in this standard.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 ASTM Standards:2A247 Test Method for Evaluating the Microstructure ofGraphite in Iron CastingsA395 Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated TemperaturesA476/A476M Specification for Ductile Iron Castings forPaper Mill Dryer RollsA536 Specification for Ductile Iron CastingsA834 Specification for Common Requirements for IronCastings for General Industrial UseA842 Specification for Compacted Graphite Iron CastingsA897/A897M Specification for Austempered Ductile IronCastingsD1976 Test Method for Elements in Water by Inductively-Coupled Argon Plasma Atomic Emission SpectroscopyD5381 Guide for X-Ray Fluorescence(XRF)Spectroscopyof Pigments and ExtendersE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE10 Test Method for Brinell Hardness of Metallic MaterialsE21 Test Methods for Elevated Temperature Tension Tests ofMetallic MaterialsE228 Test Method for Linear Thermal Expansion of SolidMaterials With a Push-Rod DilatometerE351 Test Methods for ChemicalAnalysis of Cast IronAllTypesE1184 Practice for Determination of Elements by GraphiteFurnace Atomic Absorption SpectrometryE1999 Test Method for Analysis of Cast Iron by SparkAtomic Emission Spectrometry2.2 SAE(Society of Automotive Engineers)InternationalStandards:J434 Automotive Ductile(Nodular)Iron CastingsJ1887 Automotive Compacted Graphite Iron CastingsJ2582 Automotive Ductile Iron Castings for High Tempera-ture Applications2.3 Federal Standard:FED-STD-123 Marking for Shipment(Civil Agencies)2.4 American National Standard:MIL-STD-129 Military Marking for Shipment and Storage2.5 Other Publications:AFS(American Foundry Society),Foundrymens Guide toDuctile Iron Microstructures,1984AFS,Iron Castings Engineering Handbook,2004ASM Specialty Handbook,Cast Irons,1999ASM Specialty Handbook,Heat-Resistant Materials,1999ASM Handbook,Casting,Volume 15,19983.Ordering Information3.1 Orders for materials to this specification shall includethe following information:3.1.1 ASTM designation and year of issue,1This test method is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.02 on Malleable andDuctile Iron Castings.Current edition approved Nov.1,2015.Published December 2015.DOI:10.1520/A1095-152For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.2 Grade of silicon-molybdenum ferritic iron required,3.1.3 Chemical composition requirements(see Section 5),3.1.4 Microstructure and mechanical requirements(see Sec-tions 6 and 7),3.1.5 Drawing and test coupon criteria(see Section 8),3.1.6 Special requirements,if desired(see Sections 9 and11),3.1.7 Certification if so designated by purchaser(see Sec-tion 12),and3.1.8 Special preparation for delivery,if required(see Sec-tion 14).4.Materials and Manufacture4.1 The manufacturer shall produce high-silicon molybde-num iron castings with a microstructure consisting of apredominantly ferritic matrix in the as-cast condition.Smallamounts of flake graph