ASTM B108-01

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Designation: B 108 – 01
Standard Specification for
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Aluminum-Alloy Permanent Mold Castings
This standard is issued under the fixed designation B 108; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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1. Scope * E 94 Guide for Radiographic Testing
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E 155 Reference Radiographs for Examination of Alumi-
1.1 This specification covers aluminum-alloy permanent
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num and Magnesium Castings
mold castings designated as shown in Table 1.
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E 165 Test Method for Liquid Penetrant Examination
1.2 Alloy and temper designations are in accordance with
E 227 Test Method for Optical Emission Spectrometric
ANSI H35.1. The equivalent unified numbering system alloy
Analysis of Aluminum and Aluminum Alloys by the
designations are in accordance with Practice E 527.
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Point-to-Plane Technique
1.3 For acceptance criteria for inclusion of new aluminum
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E 527 Practice for Numbering Metals and Alloys (UNS)
and aluminum alloys and their properties in this specification,
E 607 Test Method for Optical Emission Spectrometric
see Annex A1 and Annex A2.
Analysis of Aluminum and Aluminum Alloys by the
1.4 The values stated in inch-pound units are to be regarded
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Point-to-Plane Technique, Nitrogen Atmosphere
as the standard. The SI values given in parentheses are for
E 716 Practices for Sampling Aluminum and Aluminum
information only.
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Alloys for Spectrochemical Analysis
2. Referenced Documents
E 1251 Test Method for Optical Emission Spectrometric
Analysis of Aluminum and Aluminum Alloys by the Argon
2.1 The following documents of the issue in effect on the
Atmosphere, Point-to-Plane, Unipolar Self-Initiating Ca-
date of casting purchase form a part of this specification to the
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pacitor Discharge
extent referenced herein:
2.3 ANSI Standard:
2.2 ASTM Standards:
H35.1 Alloy and Temper Designation Systems for Alumi-
B 179 Specification for Aluminum Alloys in Ingot Form for
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num
Castings from all Casting Processes
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2.4 Military Standards:
B 275 Practice for Codification of Certain Nonferrous Met-
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MIL-STD-129 Marking for Shipment and Storage
als and Alloys, Cast and Wrought
MIL-STD-276 Impregnation of Porous Nonferrous Metal
B 557 Test Methods for Tension Testing Wrought and Cast
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Castings
Aluminum- and Magnesium-Alloy Products
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MIL-STD-278 Welding and Allied Processes for Machinery
B 597 Practice for Heat Treatment of Aluminum Alloys
for Ships
B 660 Practices for Packaging/Packing of Aluminum and
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MIL-I-13857 Impregnation of Metal Castings
Magnesium Products
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2.5 Federal Standard:
E 29 Practice for Using Significant Digits in Test Data to
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Fed Std. No. 123 Marking for Shipment (Civil Agencies)
Determine Conformance with Specifications
E 34 Test Methods for Chemical Analysis of Aluminum and
3. Terminology
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Aluminum-Base Alloys
3.1 Definitions:
E 88 Practice for Sampling Nonferrous Metals and Alloys
5 3.1.1 permanent mold casting—a metal object produced by
in Cast Form for Determination of Chemical Composition
introducing molten metal by gravity or low pressure into a
mold constructed of durable material, usually iron or steel, and
allowing it to solidify.
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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.
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Current edition approved June 10, 2001. Published August 2001. Originally Annual Book of ASTM Standards, Vol 03.03.
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published as B 108 – 36 T. Last previous edition B 108 – 99. Annual Book of ASTM Standards, Vol 01.01.
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For ASME Boiler and Pressure Code application see related SB-108. Annual Book of ASTM Standards, Vol 03.06.
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Annual Book of ASTM Standards, Vol 02.02. Available from American National Standards Institute, 11 W. 42nd St., 13th
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Annual Book of ASTM Standards, Vol 14.02. Floor, NY 10036.
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Annual Book of ASTM Standards, Vol 03.05. Available from Standardization Documents Order Desk, Bldg. 4, Section D,
700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*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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B 108
A,B ,C
TABLE 1 Chemical Composition Limits
Alloy Composition, %
Other
E
Manga- Magne-
D Elements
ANSI UNS Aluminum Silicon Iron Copper Chromium Nickel Zinc Tin Titanium
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 0.05 0.15–0.30 0.0
...