ASTM-B686 Standard Specification for Aluminum Alloy Castings, High-Strength

ASTM-B686 - 2018 EDITION - CURRENT
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This specification covers aluminum-alloy high-strength castings in the following designations: A12010, A03540, A33550, A13560, and A13570. Castings covered by this specification are intended for use in airframe, missile, and other critical applications where high strength, ductility, and sound castings are required. Castings shall be classified by inspection classes: Class 1, Class 2, Class 3, and Class 4 and shall be specified as Grade A, Grade B, Grade C, or Grade D based on radiographic quality. Requirements for the casting process, chemical composition analysis, preproduction sample, radiographic soundness and mechanical property control (including foundry control and acceptance procedure), heat treatment, tensile testing, and dimensions are detailed. The castings shall conform to the chemical composition prescribed for silicon, iron, copper, manganese, magnesium, zinc, titanium, and aluminum, and to the specified mechanical properties such as tensile strength, yield strength and elongation.

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Scope

1.1 This specification covers aluminum-alloy high-strength castings designated as shown in Table 1.

1.2 Castings covered by this specification are intended for use in airframe, missile, and other critical applications where high strength, ductility, and sound castings are required.

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.

Keywords

aluminum; high strength; sand casting;; ICS Number Code 77.150.10 (Aluminium products)

To find similar documents by ASTM Volume:

02.02 (Aluminum and Magnesium Alloys)

To find similar documents by classification:

77.150.10 (Aluminium products)

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Document Number

ASTM-B686/B686M-18

Revision Level

2018 EDITION

Status

Current

Modification Type

Revision

Publication Date

May 15, 2018

Document Type

Specification

Page Count

12 pages

Committee Number

B07.01