ASTM B108/B108M-11
(Specification)Standard Specification for Aluminum-Alloy Permanent Mold Castings
Standard Specification for Aluminum-Alloy Permanent Mold Castings
ABSTRACT
This specification covers aluminum-alloy permanent mold castings. The responsibility of furnishing castings that can be laid out and machined to the finished dimensions within the permissible variations specified shall rest with the producer, except where mold equipment is furnished by the purchaser. Samples for chemical analysis shall be taken by sawing, drilling, or milling the casting or test specimens in such a manner as to be representative of the material. Unless otherwise specified, only aluminum or producers foundry scrap shall be used in the re-melting furnace from which molten metal is taken for pouring directly into castings. Pure materials, recycled materials, and master alloys may be used to make alloys conforming to this specification. Foundry control shall consist of examination of castings by radiographic or other approved methods for determining internal discontinuities until the gating, pouring, and other foundry practices have been established to produce castings meeting the quality standards furnished by the purchaser or agreed upon by the purchaser and the producer. Separately cast test specimens shall be cast in iron molds. If the castings are to be heat treated and separately cast specimens are to be used, the specimens representing such castings shall be heat treated with the castings they represent. If castings are to be heat treated and tests are to be obtained on the castings, the test specimens shall be taken from the castings after heat treatment. One per melt-heat combination shall be tested when tensile properties of castings are to be determined. The finished castings shall be uniform in composition and free of blowholes, cracks, shrinks, and other discontinuities.
SCOPE
1.1 This specification covers aluminum-alloy permanent mold castings designated as shown in Table 1.
1.2 This specification is not intended for aluminum-alloy permanent mold 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 E 527.
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 limitations prior to use.
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Designation: B108/B108M – 11
Standard Specification for
1
Aluminum-Alloy Permanent Mold Castings
This standard is issued under the fixed designation B108/B108M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* B275 Practice for Codification of Certain Nonferrous Met-
2
als and Alloys, Cast and Wrought
1.1 This specification covers aluminum-alloy permanent
B557 Test Methods for Tension Testing Wrought and Cast
mold castings designated as shown in Table 1.
Aluminum- and Magnesium-Alloy Products
1.2 This specification is not intended for aluminum-alloy
B557M TestMethodsforTensionTestingWroughtandCast
permanent mold castings used in aerospace applications.
Aluminum- and Magnesium-Alloy Products (Metric)
1.3 Alloy and temper designations are in accordance with
B660 Practices for Packaging/Packing of Aluminum and
ANSI H35.1/H35.1(M). The equivalent unified numbering
Magnesium Products
system alloy designations are in accordance with Practice
B881 TerminologyRelatingtoAluminum-andMagnesium-
E527.
Alloy Products
1.4 Unless the order specifies the “M” specification desig-
B917/B917M Practice for Heat Treatment of Aluminum-
nation, the material shall be furnished to the inch-pound 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
1.6 Units—The values stated in either SI units or inch-
E34 Test Methods for ChemicalAnalysis ofAluminum and
pound units are to be regarded separately as standard. The
Aluminum-Base Alloys
values stated in each system may not be exact equivalents;
E94 Guide for Radiographic Examination
therefore,eachsystemshallbeusedindependentlyoftheother.
E155 Reference Radiographs for Inspection of Aluminum
Combining values from the two systems may result in non-
and Magnesium Castings
conformance with the standard.
E165 PracticeforLiquidPenetrantExaminationforGeneral
1.7 This standard does not purport to address all of the
Industry
safety concerns, if any, associated with its use. It is the
E527 Practice for Numbering Metals and Alloys in the
responsibility of the user of this standard to establish appro-
Unified Numbering System (UNS)
priate safety and health practices and determine the applica-
E607 Test Method for Atomic Emission Spectrometric
bility of regulatory limitations prior to use.
Analysis Aluminum Alloys by the Point to Plane Tech-
4
2. Referenced Documents nique Nitrogen Atmosphere
E716 Practices for Sampling and Sample Preparation of
2.1 The following documents of the issue in effect on the
Aluminum and Aluminum Alloys for Determination of
date of casting purchase form a part of this specification to the
Chemical Composition by Spectrochemical Analysis
extent referenced herein:
3
E1251 Test Method for Analysis of Aluminum and Alumi-
2.2 ASTM Standards:
num Alloys by Spark Atomic Emission Spectrometry
B179 Specification for Aluminum Alloys in Ingot and
E2422 Digital Reference Images for Inspection of Alumi-
Molten Forms for Castings from All Casting Processes
num Castings
IEEE/ASTM SI 10 Standard for Use of the International
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
System of Units (SI): The Modern Metric System
Metals and Alloys and is the direct responsibility of Subcommittee B07.01 on
5
2.3 ANSI Standard:
Aluminum Alloy Ingots and Castings.
H35.1/H35.1M Alloy and Temper Designation Systems for
Current edition approved Dec. 1, 2011. Published December 2011. Originally
approved in 1936. Last previous edition approved in 2008 as B108/B108M – 08.
Aluminum
DOI: 10.1520/B0108_B0108M-11.
2
For ASME Boiler and Pressure Code application see related SB-108.
3 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Withdrawn. The last approved version of this historical standard is referenced
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM on www.astm.org.
5
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
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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:B108/B108M–08 Designation: B108/B108M – 11
Standard Specification for
1
Aluminum-Alloy Permanent Mold Castings
This standard is issued under the fixed designation B108/B108M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
2
1.1 This specification covers aluminum-alloy permanent mold castings designated as shown in Table 1.
1.2 This specification is not intended for aluminum-alloy permanent mold 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
limitations 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:
3
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
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 JuneDec. 1, 2008.2011. Published July 2008.December 2011. Originally approved in 1936. Last previous edition approved in 20062008 as
B108/B108M – 068. DOI: 10.1520/B0108_B0108M-0811.
2
For ASME Boiler and Pressure Code application see related SB-108.
3
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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B108/B108M – 11
A,B,C
TABLE 1 Chemical Composition Limits
Alloy Composition, %
Other
Manga- Magne- E
D Elements
ANSI UNS Aluminum Silicon Iron Copper Chromium Nickel Zinc Titanium Tin
nes
...
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