ASTM B955/B955M-14
(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. (A) When single units are shown, these indicate the maximum amounts permitted.(B) Analysis shall be made for the elements for which limits are shown in this table.(C) The following applies to all specified limits in this table: For purposes of determining conformance to these limits, an observed value or a calculated value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit in accordance with the rounding method of Practice E29.(D) ASTM alloy designations are defined in ANSI H35.1/H35.1 (M).(E) Others includes listed elements for which no specific limit is shown as well as unlisted metallic elements. The producer may analyze samples for trace elements not specified in the specification. However, such analysis is not required and may not cover all metallic Others elements. Should any analysis by the producer or the purchaser establish that an Others element exceeds the limit of Each or that the aggregate of several Others elements exceeds the limit of Total, the material shall be considered nonconforming.(F) 2Other Elements—Total shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.(G) If the iron content exceeds 0.45 %, manganese content shall not be less than one half of the iron.
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 −14
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* 2. Referenced Documents
2.1 The following documents of the issue in effect on the
1.1 This specification covers aluminum-alloy centrifugal
date of casting purchase form a part of this specification to the
castings designated as shown in Table 1.
extent referenced herein:
1.2 This specification is not intended for aluminum-alloy
2
2.2 ASTM Standards:
centrifugal castings used in aerospace applications.
B179 Specification for Aluminum Alloys in Ingot and Mol-
ten Forms for Castings from All Casting Processes
1.3 Alloy and temper designations are in accordance with
B275 PracticeforCodificationofCertainZinc,TinandLead
ANSI H35.1/H35.1 (M). The equivalent unified numbering
Die Castings
system alloy designations are in accordance with Practice
B557 Test Methods for Tension Testing Wrought and Cast
E527.
Aluminum- and Magnesium-Alloy Products
1.4 Unless the order specifies the “M” specification
B557M Test Methods for Tension Testing Wrought and Cast
designation, the material shall be furnished to the inch-pound
Aluminum- and Magnesium-Alloy Products (Metric)
units.
B660 Practices for Packaging/Packing of Aluminum and
Magnesium Products
1.5 For acceptance criteria for inclusion of new aluminum
B881 Terminology Relating toAluminum- and Magnesium-
and aluminum alloys and their properties in this specification,
Alloy Products
see Annex A1 and Annex A2.
B917/B917M Practice for Heat Treatment of Aluminum-
1.6 Units—The values stated in either SI units or inch- Alloy Castings from All Processes
B985 Practice for SamplingAluminum Ingots, Billets, Cast-
pound units are to be regarded separately as standard. The
ings and Finished or Semi-Finished Wrought Aluminum
values stated in each system may not be exact equivalents;
Products for Compositional Analysis
therefore,eachsystemshallbeusedindependentlyoftheother.
D3951 Practice for Commercial Packaging
Combining values from the two systems may result in non-
E29 Practice for Using Significant Digits in Test Data to
conformance with the standard.
Determine Conformance with Specifications
1.7 This standard does not purport to address all of the
E34 Test Methods for Chemical Analysis of Aluminum and
safety concerns, if any, associated with its use. It is the
Aluminum-Base Alloys
responsibility of the user of this standard to establish appro-
E94 Guide for Radiographic Examination
priate safety and health practices and determine the applica-
E155 Reference Radiographs for Inspection of Aluminum
bility of regulatory limitation prior to use.
and Magnesium Castings
E165 Practice for Liquid Penetrant Examination for General
1.8 This international standard was developed in accor-
Industry
dance with internationally recognized principles on standard-
E527 Practice for Numbering Metals and Alloys in the
ization established in the Decision on Principles for the
Unified Numbering System (UNS)
Development of International Standards, Guides and Recom-
E607 Test Method for Atomic Emission Spectrometric
mendations issued by the World Trade Organization Technical
Analysis Aluminum Alloys by the Point to Plane Tech-
Barriers to Trade (TBT) Committee.
3
nique Nitrogen Atmosphere (Withdrawn 2011)
1 2
This specification is under the jurisdiction of ASTM Committee B07 on Light For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Metals and Alloysand is the direct responsibility of Subcommittee B07.01 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Aluminum Alloy Ingots and Castings. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2014. Published October 2014. Originally the ASTM website.
3
approved in 2007. Last previous edition approved in 2011 as B955/B955M – 11. The last approved version of this historical standard is referenced on
DOI: 10.1520/B0955_B0955M-14. www.astm.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 − 14
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 Aluminum
nese
F
Each Total
G G
356.0 A03560 6.5–7.5 0.6 0.25 0.35 0.20–0.45 . . 0.35 0.25
...
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 − 11 B955/B955M − 14
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 with ANSI H35.1 / H35.1 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
B985 Practice for Sampling Aluminum Ingots, Billets, Castings and Finished or Semi-Finished Wrought Aluminum Products for
Compositional Analysis
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)
1
This specification is under the jurisdiction of ASTM Committee B07 on Light Metals and Alloysand is the direct responsibility of Subcommittee B07.01 on Aluminum
Alloy Ingots and Castings.
Current edition approved May 1, 2011Oct. 1, 2014. Published June 2011October 2014. Originally approved in 2007. Last previous edition approved in 20102011 as
B955/B955MB955/B955M – 11.-10. DOI: 10.1520/B0955_B0955M-11.10.1520/B0955_B0955M-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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 − 14
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 Aluminum
nese
F
Each Total
G G
356.0 A03560 6.5–7.5 0.6 0.25 0.35 0.20–0.45 . . 0.35 0.25 . . 0.05 0.15 Remainder
505.0 0.40–0.8 0.7 0.15–0.40 0.15 0.8–1.2 0.04–0.35 { 0.25 0.15 . . 0.05 0.15 Remainder
709.0 0.40 0.50 1.2–2.0 0.30 2.1–2.9 0.18–0.28 { 5
...
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