ASTMA35203VIP专享

Designation: A 352/A 352M – 03Standard Specification forSteel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service1This standard is issued under the fixed designation A 352/A 352M; 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 (e ) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope *1.1 This specification2 covers steel castings for valves,flanges, fittings, and other pressure-containing parts intendedprimarily for low-temperature service.1.2 Several grades of ferritic steels and one grade ofmartensitic steel are covered. Selection of analysis will dependon design and service conditions (Note). The temperatureshown is the lowest temperature at which the material ordi-narily is required to meet the impact requirements of thisspecification (see Supplementary Requirement S22, ImpactTest Temperatures). Users should note that hardenability ofsome of the grades mentioned may restrict the maximum sizeat which the required mechanical properties are obtainable (seeAppendix X1).GradeUsual Minimum TestingTemperatures, °F[°C]LCA−25[–32]LCB−50[–46]LCC−50[–46]LC1−75[–59]LC2−100[–73]LC2–1−100[–73]LC3−150[–101]LC4−175[–115]LC9−320[–196]CA6NM−100[−73]NOTE 1—This specification covers the low-temperature requirementsparticularly pertinent for ferritic and martensitic steels. Certain of thegrades of austenitic steel castings furnished in accordance with Specifi-cation A 351/A 351M have been found suitable for low-tem...