ASTM B955/B955M-11
(Specification)Standard Specification for Aluminum-Alloy Centrifugal Castings
Standard Specification for Aluminum-Alloy Centrifugal Castings
ABSTRACT
This specification covers the standard for aluminum-alloy centrifugal castings. This specification does not cover aluminum-alloy centrifugal castings used in aerospace applications. The castings shall be in accordance to the prescribed chemical composition. Chemical composition shall be determined by analyzing samples at the time the castings are poured, or samples taken from castings or tension test specimens. Unless otherwise stated, the tensile strength, yield strength and elongation of test specimens cut from casting shall be in accordance with the standards prescribed herein. If the specimens fail to conform to tension requirements, test bars representative of the castings may be retested in accordance with the replacement tests and retest provisions.
SCOPE
1.1 This specification covers aluminum-alloy centrifugal castings designated as shown in Table 1.
1.2 This specification is not intended for aluminum-alloy centrifugal castings used in aerospace applications.
1.3 Alloy and temper designations are in accordance with ANSI H35.1 / H35.1 (M). The equivalent unified numbering system alloy designations are in accordance with Practice E527.
1.4 Unless the order specifies the “M” specification designation, the material shall be furnished to the inch-pound units.
1.5 For acceptance criteria for inclusion of new aluminum and aluminum alloys and their properties in this specification, see Annex A1 and Annex A2.
1.6 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 non-conformance with the standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitation prior to use.
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Designation:B955/B955M −11
StandardSpecification for
1
Aluminum-Alloy Centrifugal Castings
This standard is issued under the fixed designation B955/B955M; 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* B179 Specification for Aluminum Alloys in Ingot and Mol-
ten Forms for Castings from All Casting Processes
1.1 This specification covers aluminum-alloy centrifugal
B275 Practice for Codification of Certain Nonferrous Metals
castings designated as shown in Table 1.
and Alloys, Cast and Wrought
1.2 This specification is not intended for aluminum-alloy
B557 Test Methods for Tension Testing Wrought and Cast
centrifugal castings used in aerospace applications.
Aluminum- and Magnesium-Alloy Products
1.3 Alloy and temper designations are in accordance with B557M Test Methods for Tension Testing Wrought and Cast
Aluminum- and Magnesium-Alloy Products (Metric)
ANSI H35.1 / H35.1 (M). The equivalent unified numbering
system alloy designations are in accordance with Practice B660 Practices for Packaging/Packing of Aluminum and
Magnesium Products
E527.
B881 Terminology Relating toAluminum- and Magnesium-
1.4 Unless the order specifies the “M” specification
Alloy Products
designation, the material shall be furnished to the inch-pound
B917/B917M Practice for Heat Treatment of Aluminum-
units.
Alloy Castings from All Processes
1.5 For acceptance criteria for inclusion of new aluminum
D3951 Practice for Commercial Packaging
and aluminum alloys and their properties in this specification,
E29 Practice for Using Significant Digits in Test Data to
see Annex A1 and Annex A2.
Determine Conformance with Specifications
E34 Test Methods for Chemical Analysis of Aluminum and
1.6 Units—The values stated in either SI units or inch-
Aluminum-Base Alloys
pound units are to be regarded separately as standard. The
E94 Guide for Radiographic Examination
values stated in each system may not be exact equivalents;
E155 Reference Radiographs for Inspection of Aluminum
therefore,eachsystemshallbeusedindependentlyoftheother.
and Magnesium Castings
Combining values from the two systems may result in non-
E165 Practice for Liquid Penetrant Examination for General
conformance with the standard.
Industry
1.7 This standard does not purport to address all of the
E527 Practice for Numbering Metals and Alloys in the
safety concerns, if any, associated with its use. It is the
Unified Numbering System (UNS)
responsibility of the user of this standard to establish appro-
E607 Test Method for Atomic Emission Spectrometric
priate safety and health practices and determine the applica-
Analysis Aluminum Alloys by the Point to Plane Tech-
bility of regulatory limitation prior to use.
3
nique Nitrogen Atmosphere (Withdrawn 2011)
E716 Practices for Sampling and Sample Preparation of
2. Referenced Documents
Aluminum and Aluminum Alloys for Determination of
2.1 The following documents of the issue in effect on the
Chemical Composition by Spectrochemical Analysis
date of casting purchase form a part of this specification to the
E1251 Test Method for Analysis of Aluminum and Alumi-
extent referenced herein:
num Alloys by Spark Atomic Emission Spectrometry
2
2.2 ASTM Standards:
E2422 Digital Reference Images for Inspection of Alumi-
num Castings
4
1
2.3 ANSI Standard:
This specification is under the jurisdiction of ASTM Committee B07 on Light
Metals and Alloysand is the direct responsibility of Subcommittee B07.01 on
H35.1 / H35.1 (M) American National Standard Alloy and
Aluminum Alloy Ingots and Castings.
Temper Designation Systems for Aluminum
Current edition approved May 1, 2011. Published June 2011. Originally
approvedin2007.Lastpreviouseditionapprovedin2010asB955/B955M-10.DOI:
10.1520/B0955_B0955M-11.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.astm.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600,
the ASTM website. Arlington, VA 22209, http://www.aluminum.org.
*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 ----------------------
B955/B955M−11
A,B,C
TABLE 1 Chemical Composition Limits
Alloy Composition, %
D E
ANSI UNS Silicon Iron Copper Manga- Magnesium Chromium Nickel Zinc Titanium Tin Other Elements Al
...
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:B955/B955M–10 Designation: B955/B955M – 11
Standard Specification for
1
Aluminum-Alloy Centrifugal Castings
This standard is issued under the fixed designation B955/B955M; 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 aluminum-alloy centrifugal castings designated as shown in Table 1.
1.2 This specification is not intended for aluminum-alloy centrifugal castings used in aerospace applications.
1.3 Alloy and temper designations are in accordance withANSI H35.1 / H35.1 (M). The equivalent unified numbering system
alloy designations are in accordance with Practice E527.
1.4 Unless the order specifies the “M” specification designation, the material shall be furnished to the inch-pound units.
1.5 For acceptance criteria for inclusion of new aluminum and aluminum alloys and their properties in this specification, see
Annex A1 and Annex A2.
1.6 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 non-conformance with the standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitation prior to use.
2. Referenced Documents
2.1 The following documents of the issue in effect on the date of casting purchase form a part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B179 Specification for Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes
B275 Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought
B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)
B660 Practices for Packaging/Packing of Aluminum and Magnesium Products
B881 Terminology Relating to Aluminum- and Magnesium-Alloy Products
B917/B917M Practice for Heat Treatment of Aluminum-Alloy Castings from All Processes
D3951 Practice for Commercial Packaging
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E34 Test Methods for Chemical Analysis of Aluminum and Aluminum-Base Alloys
E94 Guide for Radiographic Examination
E155 Reference Radiographs for Inspection of Aluminum and Magnesium Castings
E165 Practice for Liquid Penetrant Examination for General Industry
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E607 Test Method for Atomic Emission Spectrometric Analysis Aluminum Alloys by the Point to Plane Technique Nitrogen
Atmosphere
E716 Practices for Sampling and Sample Preparation of Aluminum and Aluminum Alloys for Determination of Chemical
Composition by Spectrochemical Analysis
E1251 Test Method for Analysis of Aluminum and Aluminum Alloys by Atomic Emission Spectrometry Test Method for
Analysis of Aluminum and Aluminum Alloys by Atomic Emission Spectrometry
E2422 Digital Reference Images for Inspection of Aluminum Castings
1
This specification is under the jurisdiction ofASTM Committee B07 on Light Metals andAlloys and is the direct responsibility of Subcommittee B07.01 onAluminum
Alloy Ingots and Castings.
Current edition approved Nov.May 1, 2010.2011. Published December 2010.June 2011. Originally approved in 2007. Last previous edition approved in 20082010 as
B955/B955M-108. DOI: 10.1520/B0955_B0955M-101.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on 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 ----------------------
B955/B955M – 11
A,B,C
TABLE 1 Chemical Composition Limits
Alloy Composition, %
D E
ANSI UNS Silicon
...
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