ASTM A957-03

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Designation: A 957 – 03
Standard Specification for
Investment Castings, Steel and Alloy, Common
1
Requirements, for General Industrial Use
This standard is issued under the fixed designation A 957; the number immediately following the designation indicates the year of
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.
1. Scope* 1.3 When investment castings are ordered, the requirements
stated herein form an integral part of the material specification.
1.1 This specification covers a group of requirements that
In cases of conflict, the requirements of this specification shall
are mandatory for castings produced by the investment casting
take precedence over the individual material specification
processtomeetthemetallurgicalrequirementsofthefollowing
requirements.
steel casting specifications issued by ASTM.
1.4 The values stated in either inch-pound or SI units are to
ASTM Designation Title of Specification
be regarded separately as standard.Within the text, the SI units
A 27/A 27M Steel Castings, Carbon, for General Ap-
plication
are shown in brackets.The values stated in each system are not
A 148/A 148M Steel Castings, High-Strength, for Struc-
exact equivalents; therefore, each system must be used inde-
tural Purposes
pendentlyoftheother.Combiningvaluesfromthetwosystems
A 297/A 297M Steel Castings, Iron-Chromium and Iron-
Chromium-Nickel, Heat-Resistant, for
may result in nonconformance with the specification. Inch-
General Application
pound units are applicable for material ordered to Specification
A 447/A 447M Steel Castings, Chromium-Nickel-Iron Al-
loy (25-12 Class), for High-Temperature A 957 and SI units for material ordered to Specification
Service
A 957M.
A 494/A 494M Castings, Nickel and Nickel Alloy
A 560/A 560M Castings, Chromium-Nickel Alloy
2. Referenced Documents
A 732/A 732M Castings, Investment, Carbon and Low
Alloy Steel for General Application, and
2.1 ASTM Standards:
Cobalt Alloy for High Strength at Elevated
A 27/A 27M Specification for Steel Castings, Carbon, for
Temperatures
2
A 743/A 743M Castings, Iron-Chromium, Iron-Chromium- General Application
Nickel, Corrosion-Resistant, for General
A 148/A 148M Specification for Steel Castings, High
Application
2
Strength, for Structural Purposes
A 744/A 744M Castings, Iron-Chromium-Nickel, Corro-
sion Resistant, for Severe Service A 297/A 297M Specification for Steel Castings, Iron-
A 747/A 747M Steel Castings, Stainless, Precipitation
ChromiumandIron-Chromium-Nickel,HeatResistant,for
Hardening
2
General Application
A 890/A 890M Castings, Iron-Chromium-Nickel-
Molybdenum Corrosion-Resistant, Duplex
A 370 Test Methods and Definitions for MechanicalTesting
(Austenitic/Ferritic) for General Applica- 3
of Steel Products
tion
A 447/A 447M Specification for Steel Castings,
A 915/A 915M Steel Castings, Carbon and Alloy, Chemi-
cal Requirements Similar to Standard
Chromium-Nickel-Iron Alloy (25-12 Class), for High-
Wrought Grades 4
Temperature Service
1.2 This specification also covers a group of supplementary A 488/A 488M Practice for Steel Castings, Welding, Quali-
2
requirements that may be applied to the above specifications as fications of Procedures and Personnel
indicated therein. These are provided for use when additional A 494/A 494M Specification for Castings, Nickel and
2
testing or inspection is desired and apply only when specified Nickel Alloy
individually by the purchaser in the order. A 560/A 560M Specification for Castings, Chromium-
2
Nickel Alloy
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
2
A01.18 on Castings. Annual Book of ASTM Standards, Vol 01.02.
3
Current edition approved April 10, 2003. Published April 2003. Originally Annual Book of ASTM Standards, Vol 01.03.
4
approved in 1996. Last previous edition approved in 2001 as A 957 – 01a. Discontinued. See 2002 Annual Book of ASTM Standards, Vol 01.02.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A 957–03
A 609/A 609M Practice for Castings, Carbon, Low-Alloy, ARP 1341 Determining Decarburization and Carburization
9
and Martensitic Stainless Steel, Ultrasonic Examination in Finished Parts of Carbon and Low-Alloy Steel
2
Thereof
3. Terminology
A 732/A 732M Specification for Castings, Investment, Car-
bon and Low Alloy Steel for General Application, and
3.1 Definitions—The definitions in Test Methods and Defi-
2
Cobalt Alloy for High Strength at Elevated Tempe
...