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ASTM
A957/A957M-21 Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use (Redline)
Edition: 2021
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Description of ASTM-A957/A957M 2021
ASTM A957/A957M-21
Redline Standard: Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
ASTM A957/A957M
Scope
1.1 This specification covers a group of requirements that are mandatory for castings produced by the investment casting process to meet the metallurgical
requirements of the following steel casting specifications issued by ASTM.
ASTM Designation
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Title of Specification
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A27/A27M
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Steel Castings, Carbon, for General Application
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A128/A128M
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Steel Castings, Austenitic Manganese
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A148/A148M
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Steel Castings, High-Strength, for Structural Purposes
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A297/A297M
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Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat-Resistant, for General Application
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A447/A447M
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Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service
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A494/A494M
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Castings, Nickel and Nickel Alloy
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A560/A560M
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Castings, Chromium-Nickel Alloy
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A732/A732M
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Castings, Investment, Carbon and Low-Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
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A743/A743M
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Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion-Resistant, for General Application
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A744/A744M
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Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
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A747/A747M
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Steel Castings, Stainless, Precipitation Hardening
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A890/A890M
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Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
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A915/A915M
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Steel Castings, Carbon and Alloy, Chemical Requirements Similar to Standard Wrought Grades
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A958/A958M
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Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades
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A1002
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Castings, Nickel-Aluminum Ordered Alloy
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1.2 This specification also covers a group of supplementary requirements that may be applied to the above specifications as indicated therein. These are
provided for use when additional testing or inspection is desired, and apply only when specified individually by the purchaser in the order.
1.3 When investment castings are ordered, the requirements stated in this specification form an integral part of the material specification. In cases of
conflict, the requirements of this specification shall take precedence over the individual material specification requirements.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact
equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on
Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Keywords
casting; investment casting; master heat; steel; sub-heat;
ICS Code
ICS Number Code 77.100 (Ferroalloys)
DOI: 10.1520/A0957_A0957M-21
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