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ASTM-B108:2012 Edition

ASTM-B108:2012 Edition

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B108/B108M-12 Standard Specification for Aluminum-Alloy Permanent Mold Castings

Published By Publication Date Number of Pages
ASTM 2012 18
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ASTM B108/B108M-12

Historical Standard: Standard Specification for Aluminum-Alloy Permanent Mold Castings

ASTM B108/B108M

Scope

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 ā€œMā€ 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 Unitsā€”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.

TABLE 1 Chemical Composition LimitsA,B,C

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 ElementsTotal 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 0.04ā€“0.07.

J Beryllium 0.002 max

K Beryllium 0.003ā€“0.007, boron 0.005 max.

Keywords

aluminum; permanent mold castings

ICS Code

ICS Number Code 77.150.10 (Aluminium products)

DOI: 10.1520/B0108_B0108M-12

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
2 TABLE 1
3 Terminology
Ordering Information
Responsibility for Quality Assurance
Manufacture
Chemical Composition
TABLE 2
5 TABLE 3
TABLE 4
6 Material Requirementsā€”Castings Produced for Governmental and Military Agencies
Foundry Controlā€”Castings Produced for Governmental or Military Agencies, or Both
7 Tensile Requirements
Workmanship, Finish, and Appearance
Test Specimens
Number of Tests
Test Methods
Retests
8 Heat Treatment
Repair of Castings
FIG. 1
9 FIG. 2
10 Source Inspection
Foundry Inspection
FIG. 3
11 Identification and Repair Marking for Castings Produced for Government and Military Agencies
FIG. 4
12 Rejection and Rehearing
Certification
Packaging, Marking, and Shipping
Keywords
A1. BASIS FOR INCLUSION OF PROPERTY LIMITS
A1.1
A2. ACCEPTANCE CRITERIA FOR INCLUSION OF NEW ALUMINUM AND ALUMINUM ALLOYS IN THIS SPECIFICATION
A2.1
A2.2
13 X1. PROPERTIES AND CHARACTERISTICS
X1.1
X2. METRIC EQUIVALENTS
X2.1
14 TABLE X1.1
16 X3. INACTIVE ALLOYS
X3.1 Alloys listed as inactive by the Aluminum Association
TABLE X3.1
TABLE X3.2
TABLE X3.3
17 TABLE X3.4

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