ASTM B686 / B686M - 18

    Standard Specification for Aluminum Alloy Castings, High-Strength

    Active Standard ASTM B686 / B686M | Developed by Subcommittee: B07.01

    Book of Standards Volume: 02.02


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    Abstract

    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.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    AMS Standard

    AMS 2771 Heat Treatment of Aluminum Alloy Castings

    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

    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

    E94 Guide for Radiographic Examination Using Industrial Radiographic Film

    E155 Reference Radiographs for Inspection of Aluminum and Magnesium Castings

    E165 Practice for Liquid Penetrant Examination for General Industry

    E607 Test Method for Atomic Emission Spectrometric Analysis Aluminum Alloys by the Point to Plane Technique Nitrogen Atmosphere

    E716 Practices for Sampling and Sample Preparation of Aluminum and Aluminum Alloys for Determination of Chemical Composition by Spark Atomic Emission Spectrometry

    E1251 Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry

    E2422 Digital Reference Images for Inspection of Aluminum Castings


    ICS Code

    ICS Number Code 77.150.10 (Aluminium products)

    UNSPSC Code

    UNSPSC Code 31100000(Castings and casting assemblies); 11101711(Non ferrous alloy)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/B0686_B0686M-18

    Citation Format

    ASTM B686 / B686M-18, Standard Specification for Aluminum Alloy Castings, High-Strength, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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