ASTM-A985 › Historical Revision Information
Standard Specification for Steel Investment Castings General Requirements, for Pressure-Containing Parts
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This specification covers a group of common requirements that are mandatory for steel castings produced by the investment casting process for pressure-containing parts. Master heats shall be made by the electric furnace process with or without separate refining such as argon-oxygen-decarburization (AOD), vacuum-oxygen degassing (VOD), vacuum-induction-melting (VIM). Ferritic and martensitic steel shall be cooled after pouring to provide complete transformation of austenite prior to heat treatment to enhance mechanical properties. Chemical, heat, and product analyses shall be performed and the chemical composition thus determined shall conform to the prescribed values in carbon, manganese, silicon, phosphorus, sulfur, nickel, chromium, molybdenum, vanadium, tungsten, copper, and aluminum. Tensile testing shall be done on the castings and shall meet the required yield and tensile strength, elongation, and reduction of area. Each casting shall also be tested after machining to hydrostatic shell pressure test and shall not show any leaks.
Scope
1.1 This specification covers a group of common requirements that are mandatory for steel castings produced by the investment casting process for pressure-containing parts under each of the following ASTM Specifications:
Keywords
casting; investment casting; master heat; pressure containing; steel casting; subheat; General delivery requirements--steel; Investment castings--specifications; Master heat process; Pressure-containing parts; Steel castings--specifications; Sub-heat process; ICS Number Code 49.025.10 (Steels)
To find similar documents by ASTM Volume:
01.02 (Ferrous Castings; Ferroalloys)
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Document Number
ASTM-A985/A985M-11
Revision Level
2011 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
June 15, 2011
Document Type
Specification
Page Count
11 pages
Committee Number
A01.18