ASTM A957/A957M-12
(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.
ASTM Designation
Title of Specification
A27/A27M
Steel Castings, Carbon, for General Application
A148/A148M
Steel Castings, High-Strength, for Structural Purposes
A297/A297M
Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat-Resistant, for General Application
A447/A447M
Steel Castings, Chromium-Nickel-Iron Alloy (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, Corrosion 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 Application
A915/A915M
Steel Castings, Carbon and Alloy, Chemical Requirements Similar to Standard Wrought Grades
A958
Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements 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.
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Designation:A957/A957M −12
StandardSpecification 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
A27/A27M Steel Castings, Carbon, for General Ap-
are to be regarded separately as standard. The values stated in
plication
each system may not be exact equivalents; therefore, each
A148/A148M Steel Castings, High-Strength, for Struc-
tural Purposes system shall be used independently of the other. Combining
A297/A297M Steel Castings, Iron-Chromium and Iron-
values from the two systems may result in non-conformance
Chromium-Nickel, Heat-Resistant, for
with the standard.
General Application
A447/A447M Steel Castings, Chromium-Nickel-Iron Al-
loy (25-12 Class), for High-Temperature
2. Referenced Documents
Service
2
A494/A494M Castings, Nickel and Nickel Alloy 2.1 ASTM Standards:
A560/A560M Castings, Chromium-Nickel Alloy
A27/A27M Specification for Steel Castings, Carbon, for
A732/A732M Castings, Investment, Carbon and Low
General Application
Alloy Steel for General Application, and
Cobalt Alloy for High Strength at Elevated A148/A148M Specification for Steel Castings, High
Temperatures
Strength, for Structural Purposes
A743/A743M Castings, Iron-Chromium, Iron-Chromium-
A297/A297M Specification for Steel Castings, Iron-
Nickel, Corrosion-Resistant, for General
Application
Chromium and Iron-Chromium-Nickel, Heat Resistant,
A744/A744M Castings, Iron-Chromium-Nickel, Corro-
for General Application
sion Resistant, for Severe Service
A370 Test Methods and Definitions for Mechanical Testing
A747/A747M Steel Castings, Stainless, Precipitation
Hardening
of Steel Products
A890/A890M Castings, Iron-Chromium-Nickel-
A380 Practice for Cleaning, Descaling, and Passivation of
Molybdenum Corrosion-Resistant, Duplex
Stainless Steel Parts, Equipment, and Systems
(Austenitic/Ferritic) for General Applica-
tion
A447/A447M Specification for Steel Castings, Chromium-
A915/A915M Steel Castings, Carbon and Alloy, Chemi-
Nickel-Iron Alloy (25-12 Class), for High-Temperature
cal Requirements Similar to Standard
Service
Wrought Grades
A958 Steel Castings, Carbon and Alloy, with
A488/A488M Practice for Steel Castings, Welding, Qualifi-
Tensile Requirements, Chemical Require-
cations of Procedures and Personnel
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 Specification for Castings, 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
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, 2012. Published August 2012. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1996. Last previous edition approved in 2011 as A957/A957M – 11a. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0957_A0957M-12. 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
---------------------- Page: 1 ----------------------
A957/A957M−12
A732/A732M Specification for Castings, Investment, Car- E446 Reference Radiographs for Steel Castings Up to 2 in.
bon and Low Alloy Steel for General Application, and (50.8 mm) in Thi
...
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 − 11a A957/A957M − 12
Standard Specification for
Investment Castings, Steel and Alloy, Common
1
Requirements, for General Industrial Use
This standard is issued under the fixed designation A957/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 of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.18
on Castings.
Current edition approved Oct. 1, 2011May 1, 2012. Published November 2011August 2012. Originally approved in 1996. Last previous edition approved in 2011 as
A957/A957M – 11.A957/A957M – 11a. DOI: 10.1520/A0957_A0957M-11A.10.1520/A0957_A0957M-12.
*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 − 12
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
...
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