ASTM B108/B108M-14
(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. (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 recorded in Practice B275.(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) Other Elements—Total shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.(G) 336.0 formerly A332.0, 332.0 formerly F332.0, 513.0 formerly A514.0, 711.0 formerly C712.0, 851.0 formerly A850.0, 852.0 formerly B850.0.(H) If the iron content exceeds 0.45 %, manganese content shall not be less than one half of the iron.(I) Beryllium 0.04–0.07.(J) Beryllium 0.002 max(K) Beryllium 0.003–0.007, boron 0.005 max.
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). 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.
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Designation:B108/B108M −14
StandardSpecification 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.
3
1. Scope* 2.2 ASTM Standards:
2 B179 Specification for Aluminum Alloys in Ingot and Mol-
1.1 This specification covers aluminum-alloy permanent
ten Forms for Castings from All Casting Processes
mold castings designated as shown in Table 1.
B275 PracticeforCodificationofCertainZinc,TinandLead
1.2 This specification is for aluminum-alloy permanent
Die Castings
mold castings used in general purpose applications. It may not
B557 Test Methods for Tension Testing Wrought and Cast
address the mechanical properties, integrity testing, and veri-
Aluminum- and Magnesium-Alloy Products
fication required for highly loaded or safety critical applica-
B557M Test Methods for Tension Testing Wrought and Cast
tions.
Aluminum- and Magnesium-Alloy Products (Metric)
B660 Practices for Packaging/Packing of Aluminum and
1.3 Alloy and temper designations are in accordance with
ANSI H35.1/H35.1(M). The equivalent unified numbering Magnesium Products
B881 Terminology Relating toAluminum- and Magnesium-
system alloy designations are in accordance with Practice
E527. Alloy Products
B917/B917M Practice for Heat Treatment of Aluminum-
1.4 Unless the order specifies the “M” specification
Alloy Castings from All Processes
designation, the material shall be furnished to the inch-pound
B985 Practice for SamplingAluminum Ingots, Billets, Cast-
units.
ings and Finished or Semi-Finished Wrought Aluminum
1.5 For acceptance criteria for inclusion of new aluminum
Products for Compositional Analysis
and aluminum alloys and their properties in this specification,
D3951 Practice for Commercial Packaging
see Annex A1 and Annex A2.
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.6 Units—The values stated in either SI units or inch-
E34 Test Methods for Chemical Analysis of Aluminum 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 Practice for Liquid Penetrant Examination for General
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 (Withdrawn 2011)
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:
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 Oct. 1, 2014. Published October 2014. Originally Standards volume information, refer to the standard’s Document Summary page on
ε1
approved in 1936. Last previous edition approved in 2012 as B108/B108M – 12 . the ASTM website.
4
DOI: 10.1520/B0108_B0108M-14. 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 Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B108/B108M−14
A,B,C
TABLE 1 Chemical Composition Limits
Alloy Composition, %
Other
Manga- Magne- E
D
Elements
ANSI UNS Aluminum Silicon Iron
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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.
´1
Designation: B108/B108M − 12 B108/B108M − 14
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—Section 10.2 was corrected editorially in July 2012.
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). 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
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
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 1, 2012Oct. 1, 2014. Published June 2012October 2014. Originally approved in 1936. Last previous edition approved in 20112012 as
ε1
B108/B108M – 11.B108/B108M – 12 . DOI: 10.1520/B0108_B0108M-12.10.1520/B0108_B0108M-14.
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
---------------------- Page: 1 ----------------------
B108/B108M − 14
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
nese sium
F
Each Total
204.0 A02040 remainder 0.20 0.35 4.2–5.0 0.10 0.15–0.35 . 0.05 0.10 0.15–0.30 0.05 0.05 0.15
242.0 A02420 remainder 0.7 1.0 3.5–4.5 0.35 1.2–1
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