ASTM B108/B108M-19
(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 specification2 covers aluminum-alloy permanent mold castings designated as shown in Table 1.
1.2 This specification is for aluminum-alloy permanent mold castings used in general purpose applications. It may not address the mechanical properties, integrity testing, and verification required for highly loaded or safety critical applications.
1.3 Alloy and temper designations are in accordance with ANSI H35.1/H35.1(M).
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: B108/B108M −19
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 U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2
1.1 This specification covers aluminum-alloy permanent 2.1 The following documents of the issue in effect on the
mold castings designated as shown in Table 1. date of casting purchase form a part of this specification to the
extent referenced herein:
1.2 This specification is for aluminum-alloy permanent
3
mold castings used in general purpose applications. It may not 2.2 ASTM Standards:
address the mechanical properties, integrity testing, and veri- B179 Specification for Aluminum Alloys in Ingot and Mol-
fication required for highly loaded or safety critical applica- ten Forms for Castings from All Casting Processes
tions. B275 PracticeforCodificationofCertainZinc,TinandLead
4
Die Castings (Withdrawn 2020)
1.3 Alloy and temper designations are in accordance with
B557 Test Methods for Tension Testing Wrought and Cast
ANSI H35.1/H35.1(M).
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
1.5 For acceptance criteria for inclusion of new aluminum Magnesium Products
B666/B666M Practice for Identification Marking of Alumi-
and aluminum alloys and their properties in this specification,
see Annex A1 and Annex A2. num and Magnesium Products
B881 Terminology Relating toAluminum- and Magnesium-
1.6 Units—The values stated in either SI units or inch-
Alloy Products
pound units are to be regarded separately as standard. The
B917/B917M Practice for Heat Treatment of Aluminum-
values stated in each system may not be exact equivalents;
Alloy Castings From All Processes
therefore,eachsystemshallbeusedindependentlyoftheother.
B985 Practice for SamplingAluminum Ingots, Billets, Cast-
Combining values from the two systems may result in non-
ings and Finished or Semi-Finished Wrought Aluminum
conformance with the standard.
Products for Compositional Analysis
1.7 This standard does not purport to address all of the
D3951 Practice for Commercial Packaging
safety concerns, if any, associated with its use. It is the
E29 Practice for Using Significant Digits in Test Data to
responsibility of the user of this standard to establish appro-
Determine Conformance with Specifications
priate safety, health, and environmental practices and deter-
E34 Test Methods for Chemical Analysis of Aluminum and
mine the applicability of regulatory limitations prior to use. 4
Aluminum-Base Alloys (Withdrawn 2017)
1.8 This international standard was developed in accor-
E94/E94M Guide for Radiographic Examination Using In-
dance with internationally recognized principles on standard-
dustrial Radiographic Film
ization established in the Decision on Principles for the
E155 Reference Radiographs for Inspection of Aluminum
Development of International Standards, Guides and Recom-
and Magnesium Castings
mendations issued by the World Trade Organization Technical
E165/E165M Practice for Liquid Penetrant Testing for Gen-
Barriers to Trade (TBT) Committee.
eral Industry
E607 Test Method for Atomic Emission Spectrometric
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
3
Metals and Alloys and is the direct responsibility of Subcommittee B07.01 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Aluminum Alloy Ingots and Castings. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Sept. 1, 2019. Published October 2019. Originally Standards volume information, refer to the standard’s Document Summary page on
ε1
approved in 1936. Last previous edition approved in 2018 as B108/B108M – 18 . theASTM website.
4
DOI: 10.1520/B0108_B0108M-19. The last approved version of this historical standard is referenced on
2
For ASME Boiler and Pressure Code application see related SB-108. 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 Co
...
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.
´1
Designation: B108/B108M − 18 B108/B108M − 19
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 U.S. Department of Defense.
1
ε NOTE—Footnote B of Table 3 was revised editorially in August 2018.
1. Scope*
2
1.1 This specification covers aluminum-alloy permanent mold castings designated as shown in Table 1.
1.2 This specification is for aluminum-alloy permanent mold castings used in general purpose applications. It may not address
the mechanical properties, integrity testing, and verification required for highly loaded or safety critical applications.
1.3 Alloy and temper designations are in accordance with ANSI H35.1/H35.1(M).
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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 Zinc, Tin and Lead Die Castings
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
B666/B666M Practice for Identification Marking 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
1
This specification is under the jurisdiction of ASTM Committee B07 on Light Metals and Alloys and is the direct responsibility of Subcommittee B07.01 on Aluminum
Alloy Ingots and Castings.
Current edition approved May 15, 2018Sept. 1, 2019. Published May 2018October 2019. Originally approved in 1936. Last previous edition approved in 20152018 as
ε1
B108/B108M – 15.B108/B108M – 18 . DOI: 10.1520/B0108_B0108M-18E01.10.1520/B0108_B0108M-19.
2
For ASME Boiler and Pressure Code application see related SB-108.
3
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
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B108/B108M − 19
2
A,B,C,D
TABLE 1 Chemical Composition Limits
E
Others
I
Desig. Si Fe Cu Mn Mg Cr Ni Zn Ti Ag Be Pb Sn Zr FNs Al. Min
F
Each Total
204.0 0.20 0.35 4.2–5.0 0.10 0.15–0.35 . . . 0.05 0.10 0.15–0.30 . . . . . . . . . 0.05 . . . .
...
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