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ASTM A957-05

(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

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 DesignationTitle of SpecificationA 27/A 27MSteel Castings, Carbon, for General ApplicationA 148/A 148MSteel Castings, High-Strength, for Structural Purposes A 297/A 297MSteel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat-Resistant, for General Application A 447/A 447M Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service A 494/A 494MCastings, Nickel and Nickel Alloy A 560/A 560MCastings, Chromium-Nickel Alloy A 732/A 732MCastings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures A 743/A 743MCastings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion-Resistant, for General Application A 744/A 744MCastings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service A 747/A 747MSteel Castings, Stainless, Precipitation Hardening A 890/A 890MCastings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General ApplicationA 915/A 915MSteel Castings, Carbon and Alloy, 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 inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. Inch-pound units are applicable for material ordered to Specification A 957 and SI units for material ordered to Specification A 957M.

General Information

Status
Historical
Publication Date
31-May-2005
ICS
77.100 - Ferroalloys
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.18 - Castings
Current Stage
Ref Project

Relations

Replaces
ASTM A957-03 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
01-Jun-2005
Replaced By
ASTM A957/A957M-06 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
Effective Date
15-Jun-2006
Referred By
ASTM F3160-21 - Standard Guide for Metallurgical Characterization of Absorbable Metallic Materials for Medical Implants
Effective Date
01-Jun-2005

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ASTM A957-05 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial UseASTM A957-05 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
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ASTM A957-05 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 957 – 05
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* specification shall take precedence over the individual material
specification requirements.
1.1 This specification covers a group of requirements that
1.4 The values stated in either inch-pound or SI units are to
are mandatory for castings produced by the investment casting
be regarded separately as standard.Within the text, the SI units
processtomeetthemetallurgicalrequirementsofthefollowing
are shown in brackets.The values stated in each system are not
steel casting specifications issued by ASTM.
exact equivalents; therefore, each system must be used inde-
ASTM Designation Title of Specification
pendentlyoftheother.Combiningvaluesfromthetwosystems
A 27/A 27M Steel Castings, Carbon, for General Ap-
plication
may result in nonconformance with the specification. Inch-
A 148/A 148M Steel Castings, High-Strength, for Struc-
pound units are applicable for material ordered to Specification
tural Purposes
A 957 and SI units for material ordered to Specification
A 297/A 297M Steel Castings, Iron-Chromium and Iron-
Chromium-Nickel, Heat-Resistant, for
A 957M.
General Application
A 447/A 447M Steel Castings, Chromium-Nickel-Iron Al-
2. Referenced Documents
loy (25-12 Class), for High-Temperature
2
Service
2.1 ASTM Standards:
A 494/A 494M Castings, Nickel and Nickel Alloy
A 27/A 27M Specification for Steel Castings, Carbon, for
A 560/A 560M Castings, Chromium-Nickel Alloy
General Application
A 732/A 732M Castings, Investment, Carbon and Low
Alloy Steel for General Application, and
A 148/A 148M Specification for Steel Castings, High
Cobalt Alloy for High Strength at Elevated
Strength, for Structural Purposes
Temperatures
A 743/A 743M Castings, Iron-Chromium, Iron-Chromium- A 297/A 297M Specification for Steel Castings, Iron-
Nickel, Corrosion-Resistant, for General
ChromiumandIron-Chromium-Nickel,HeatResistant,for
Application
General Application
A 744/A 744M Castings, Iron-Chromium-Nickel, Corro-
sion Resistant, for Severe Service A 370 Test Methods and Definitions for MechanicalTesting
A 747/A 747M Steel Castings, Stainless, Precipitation
of Steel Products
Hardening
A 447/A 447M Specification for Steel Castings,
A 890/A 890M Castings, Iron-Chromium-Nickel-
Molybdenum Corrosion-Resistant, Duplex
Chromium-Nickel-Iron Alloy (25-12 Class), for High-
(Austenitic/Ferritic) for General Applica-
Temperature Service
tion
A 488/A 488M Practice for Steel Castings, Welding, Quali-
A 915/A 915M Steel Castings, Carbon and Alloy, Chemi-
cal Requirements Similar to Standard
fications of Procedures and Personnel
Wrought Grades
A 494/A 494M Specification for Castings, Nickel and
1.2 This specification also covers a group of supplementary Nickel Alloy
requirements that may be applied to the above specifications as A 560/A 560M Specification for Castings, Chromium-
indicated therein. These are provided for use when additional Nickel Alloy
testing or inspection is desired and apply only when specified A 609/A 609M Practice for Castings, Carbon, Low-Alloy,
individually by the purchaser in the order. and Martensitic Stainless Steel, Ultrasonic Examination
Thereof
1.3 When investment castings are ordered, the requirements
stated in this specification form an integral part of the material A 732/A 732M Specification for Castings, Investment, Car-
bon and Low Alloy Steel for General Application, and
specification. In cases of conflict, the requirements of this
Cobalt Alloy for High Strength at Elevated Temperatures
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
2
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A01.18 on Castings. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved June 1, 2005. Published June 2005. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1996. Last previous edition approved in 2003 as A 957 – 03. 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 ----------------------
A957–05
3
A 743/A 743M Specification for Castings, Iron-Chromium, 2.2 SAE Aerospace Recommende
...

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1.4 Units—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.  
1.4.1 This specification is expressed in both inch-pound units and in SI units (within the text, the SI units are shown in brackets); however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply.  
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