ASTM B955/B955M-10
(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.
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Designation: B955/B955M – 10
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* B557 Test Methods for Tension Testing Wrought and Cast
Aluminum- and Magnesium-Alloy Products
1.1 This specification covers aluminum-alloy centrifugal
B557M TestMethodsforTensionTestingWroughtandCast
castings designated as shown in Table 1.
Aluminum- and Magnesium-Alloy Products (Metric)
1.2 This specification is not intended for aluminum-alloy
B660 Practices for Packaging/Packing of Aluminum and
centrifugal castings used in aerospace applications.
Magnesium Products
1.3 Alloy and temper designations are in accordance with
B881 TerminologyRelatingtoAluminum-andMagnesium-
ANSI H35.1 / H35.1 (M). The equivalent unified numbering
Alloy Products
system alloy designations are in accordance with Practice
B917/B917M Practice for Heat Treatment of Aluminum-
E527.
Alloy Castings from All Processes
1.4 Unless the order specifies the “M” specification desig-
D3951 Practice for Commercial Packaging
nation, the material shall be furnished to the inch-pound units.
E29 Practice for Using Significant Digits in Test Data to
1.5 For acceptance criteria for inclusion of new aluminum
Determine Conformance with Specifications
and aluminum alloys and their properties in this specification,
E34 Test Methods for ChemicalAnalysis ofAluminum and
see Annex A1 and Annex A2.
Aluminum-Base Alloys
1.6 Units—The values stated in either SI units or inch-
E94 Guide for Radiographic Examination
pound units are to be regarded separately as standard. The
E155 Reference Radiographs for Inspection of Aluminum
values stated in each system may not be exact equivalents;
and Magnesium Castings
therefore,eachsystemshallbeusedindependentlyoftheother.
E165 PracticeforLiquidPenetrantExaminationforGeneral
Combining values from the two systems may result in non-
Industry
conformance with the standard.
E527 Practice for Numbering Metals and Alloys in the
1.7 This standard does not purport to address all of the
Unified Numbering System (UNS)
safety concerns, if any, associated with its use. It is the
E607 Test Method for Atomic Emission Spectrometric
responsibility of the user of this standard to establish appro-
Analysis Aluminum Alloys by the Point to Plane Tech-
priate safety and health practices and determine the applica-
nique Nitrogen Atmosphere
bility of regulatory limitation prior to use.
E716 Practices for Sampling and Sample Preparation of
2. Referenced Documents Aluminum and Aluminum Alloys for Determination of
Chemical Composition by Spectrochemical Analysis
2.1 The following documents of the issue in effect on the
E1251 Test Method for Analysis of Aluminum and Alumi-
date of casting purchase form a part of this specification to the
num Alloys by Atomic Emission Spectrometry
extent referenced herein:
3
2
2.3 ANSI Standard:
2.2 ASTM Standards:
H35.1 / H35.1 (M) American National Standard Alloy and
B179 Specification for Aluminum Alloys in Ingot and
Temper Designation Systems for Aluminum
Molten Forms for Castings from All Casting Processes
Z1.4 Sampling Procedures and Tables for Inspection by
B275 Practice for Codification of Certain Nonferrous Met-
Attributes
als and Alloys, Cast and Wrought
4
2.4 Military Standards:
MIL-STD-129 Marking for Shipment and Storage
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
MIL-STD-276 Impregnation of Porous Nonferrous Metal
Metals and Alloys and is the direct responsibility of Subcommittee B07.01 on
Castings
Aluminum Alloy Ingots and Castings.
Current edition approved Nov. 1, 2010. Published December 2010. Originally
approvedin2007.Lastpreviouseditionapprovedin2008asB955/B955M-08.DOI:
3
10.1520/B0955_B0955M-10. Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Arlington, VA 22209, http://www.aluminum.org.
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
Standards volume information, refer to the standard’s Document Summary page on Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
the ASTM website. www.dodssp.daps.mil.
*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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B955/B955
...
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–08 Designation: B955/B955M – 10
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
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 July 15, 2008. Published July 2008. Originally approved in 2007. Last previous edition approved in 2007 as B955/B955M-07. DOI:
10.1520/B0955_B0955M-08.
Current edition approved Nov. 1, 2010. Published December 2010. Originally approved in 2007. Last previous edition approved in 2008 as B955/B955M-08. DOI:
10.1520/B0955_B0955M-10.
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
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B955/B955M – 10
A,B,C
TABLE 1 Chemical Composition Limits
Alloy Composition, %
D E
ANSI UNS Silicon Iro
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