ASTM A957/A957M-11
(Specification)Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
ABSTRACT
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. Chemical, heat, and product analyses shall be performed wherein the material shall meet the specified composition limits for carbon, manganese, silicon, phosphorus, sulfur, nickel, chromium, molybdenum, vanadium, tungsten, copper, and aluminum. The specified design and dimensions of the ICI test bar shall be employed only for austenitic alloy castings. The material shall conform to mechanical properties including tension test requirements.
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.
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Designation: A957/A957M – 11
Standard Specification for
Investment Castings, Steel and Alloy, Common
1
Requirements, for General Industrial Use
This standard is issued under the fixed designationA957/A957M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 1.3 When investment castings are ordered, the requirements
stated in this specification form an integral part of the material
1.1 This specification covers a group of requirements that
specification. In cases of conflict, the requirements of this
are mandatory for castings produced by the investment casting
specification shall take precedence over the individual material
processtomeetthemetallurgicalrequirementsofthefollowing
specification requirements.
steel casting specifications issued by ASTM.
1.4 The values stated in either SI units or inch-pound units
ASTM Designation Title of Specification
are to be regarded separately as standard. The values stated in
A27/A27M Steel Castings, Carbon, for General Ap-
plication
each system may not be exact equivalents; therefore, each
A148/A148M Steel Castings, High-Strength, for Struc-
system shall be used independently of the other. Combining
tural Purposes
values from the two systems may result in non-conformance
A297/A297M Steel Castings, Iron-Chromium and Iron-
Chromium-Nickel, Heat-Resistant, for
with the standard.
General Application
A447/A447M Steel Castings, Chromium-Nickel-Iron Al-
2. Referenced Documents
loy (25-12 Class), for High-Temperature
2
Service
2.1 ASTM Standards:
A494/A494M Castings, Nickel and Nickel Alloy
A27/A27M Specification for Steel Castings, Carbon, for
A560/A560M Castings, Chromium-Nickel Alloy
A732/A732M Castings, Investment, Carbon and Low General Application
Alloy Steel for General Application, and
A148/A148M Specification for Steel Castings, High
Cobalt Alloy for High Strength at Elevated
Strength, for Structural Purposes
Temperatures
A743/A743M Castings, Iron-Chromium, Iron-Chromium- A297/A297M Specification for Steel Castings, Iron-
Nickel, Corrosion-Resistant, for General
ChromiumandIron-Chromium-Nickel,HeatResistant,for
Application
General Application
A744/A744M Castings, Iron-Chromium-Nickel, Corro-
sion Resistant, for Severe Service
A370 Test Methods and Definitions for Mechanical Testing
A747/A747M Steel Castings, Stainless, Precipitation
of Steel Products
Hardening
A380 Practice for Cleaning, Descaling, and Passivation of
A890/A890M Castings, Iron-Chromium-Nickel-
Molybdenum Corrosion-Resistant, Duplex
Stainless Steel Parts, Equipment, and Systems
(Austenitic/Ferritic) for General Applica-
A447/A447M Specification for Steel Castings, Chromium-
tion
Nickel-Iron Alloy (25-12 Class), for High-Temperature
A915/A915M Steel Castings, Carbon and Alloy, Chemi-
cal Requirements Similar to Standard
Service
Wrought Grades
A488/A488M Practice for Steel Castings, Welding, Quali-
A958 Steel Castings, Carbon and Alloy, with
fications of Procedures and Personnel
Tensile Requirements, Chemical Require-
ments Similar to Standard Wrought
A494/A494M Specification for Castings, Nickel and Nickel
Grades
Alloy
1.2 This specification also covers a group of supplementary A560/A560M SpecificationforCastings,Chromium-Nickel
requirements that may be applied to the above specifications as Alloy
indicated therein. These are provided for use when additional
A609/A609M Practice for Castings, Carbon, Low-Alloy,
testing or inspection is desired and apply only when specified and Martensitic Stainless Steel, Ultrasonic Examination
individually by the purchaser in the order.
Thereof
A732/A732M Specification for Castings, Investment, Car-
bon and Low Alloy Steel for General Application, and
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. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2011. Published June 2011. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1996. Last previous edition approved in 2009 as A957/A957M – 09a. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0957_A0957M-11. the ASTM website.
*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.
1
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A957/A957M – 11
3
Cobalt Alloy for High Strength at Elevated Temperatures 2.2 SAE Aerospace R
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A957/A957M–09a Designation: A957/A957M – 11
Standard Specification for
Investment Castings, Steel and Alloy, Common
1
Requirements, for General Industrial Use
This standard is issued under the fixed designationA957/A957M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. 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 Title of Specification
A27/A27M Steel Castings, Carbon, for General Ap-
plication
A148/A148M Steel Castings, High-Strength, for Struc-
tural Purposes
A297/A297M Steel Castings, Iron-Chromium and Iron-
Chromium-Nickel, Heat-Resistant, for
General Application
A447/A447M Steel Castings, Chromium-Nickel-Iron Al-
loy (25-12 Class), for High-Temperature
Service
A494/A494M Castings, Nickel and Nickel Alloy
A560/A560M Castings, Chromium-Nickel Alloy
A732/A732M Castings, Investment, Carbon and Low
Alloy Steel for General Application, and
Cobalt Alloy for High Strength at Elevated
Temperatures
A743/A743M Castings, Iron-Chromium, Iron-Chromium-
Nickel, Corrosion-Resistant, for General
Application
A744/A744M Castings, Iron-Chromium-Nickel, Corro-
sion Resistant, for Severe Service
A747/A747M Steel Castings, Stainless, Precipitation
Hardening
A890/A890M Castings, Iron-Chromium-Nickel-
Molybdenum Corrosion-Resistant, Duplex
(Austenitic/Ferritic) for General Applica-
tion
A915/A915M Steel Castings, Carbon and Alloy, Chemi-
cal Requirements Similar to Standard
Wrought Grades
A958 Steel Castings, Carbon and Alloy, with
Tensile Requirements, Chemical Require-
ments Similar to Standard Wrought
Grades
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 non-conformance with the standard.
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.18
on Castings.
Current edition approved May 1, 2009.2011. Published May 2009.June 2011. Originally approved in 1996. Last previous edition approved in 2009 asA957/A957M – 09a.
DOI: 10.1520/A0957_A0957M-09A.10.1520/A0957_A0957M-11.
*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.
1
---------------------- Page: 1 ----------------------
A957/A957M – 11
2. Referenced Documents
2
2.1 ASTM Standards:
A27/A27M Specification for Steel Castings, Carbon, for General Application
A148/A148M Specification for Steel Castings, High Strength, for Structural Purposes
A297/A297M Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General
Application
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A380 Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems
A447/A447M Specification for Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service
A488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
A494/A494M Specification for Castings, Nickel and Nickel Alloy
A560/A560M Specification for Castings, Chromium-Nickel Alloy
A609/A609M Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof
A732/A732M Specification for Castings, Investment, Carbon and Low Alloy Steel fo
...
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