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    ASTM B80 - 15

    Standard Specification for Magnesium-Alloy Sand Castings

    Active Standard ASTM B80 | Developed by Subcommittee: B07.04

    Book of Standards Volume: 02.02

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    This specification covers magnesium-alloy sand castings. The castings shall conform to the chemical composition limits specified. The castings may be subjected to such heat treatment as deemed necessary to produce material that will conform to the requirements specified. Heat treatment shall be performed on the whole casting and never on a portion. Foundry control shall consist of examination of the 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. The tension test specimens representing the castings shall conform to the requirements.

    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 magnesium-alloy sand castings designated as shown in Table 1.

    (A) Limits are in weight % max unless shown as a range or stated otherwise.
    (B) ASTM alloy designations were established in accordance with Practice B951. UNS designations were established in accordance with Practice E527.
    (C) Includes listed elements for when no specific limit is shown.
    (D) If iron exceeds 0.005 %, the Iron to Manganese ratio shall not exceed 0.032.
    (E) Rare earth elements are in the form of Didymium, with not less than 70 % Neodymium, and the remainder substantially Praseodymium.
    (F) Alloy EV31A is a patented composition, suitable for elevated temperature applications. Interested parties are invited to submit information regarding the identification of alternatives to these compositions to ASTM International. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this specification. Users of this specification are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
    (G) Other Rare Earths may also be present to a total maximum of 0.4 %. These Rare Earths shall principally be Cerium, Lanthanum, and Praseodymium.
    (H) Total Rare Earths (TRE) are principally a mixture of Cerium, Lanthanum, Neodymium and Praseodymium. The Cerium content should not be less than 45% of TRE.
    (I) Other Rare Earths shall be principally heavy rare earths, such as, Gadolinium, Dysprosium, Erbium, and Ytterbium. Other Rare Earths are derived from the Yttrium, typically 80 % Yttrium, and 20 % heavy rare earths.
    (J) Zinc + Silver shall not exceed 0.20 % in WE43B.

    1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values in parentheses are provided for information only.

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

    ASTM Standards

    B93/B93M Specification for Magnesium Alloys in Ingot Form for Sand Castings, Permanent Mold Castings, and Die Castings

    B296 Practice for Temper Designations of Magnesium Alloys, Cast and Wrought

    B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products

    B660 Practices for Packaging/Packing of Aluminum and Magnesium Products

    B661 Practice for Heat Treatment of Magnesium Alloys

    B951 Practice for Codification of Unalloyed Magnesium and Magnesium-Alloys, Cast and Wrought

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E35 Test Methods for Chemical Analysis of Magnesium and Magnesium Alloys

    E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition

    E94 Guide for Radiographic Examination

    E155 Reference Radiographs for Inspection of Aluminum and Magnesium Castings

    E165 Practice for Liquid Penetrant Examination for General Industry

    E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

    E716 Practices for Sampling and Sample Preparation of Aluminum and Aluminum Alloys for Determination of Chemical Composition by Spectrochemical Analysis

    Federal Standards

    Fed. Std. No. 123 Marking for Shipment (Civil Agencies)

    Fed. Std. No. 184 Identification Marking of Aluminum, Magnesium and Titanium

    Military Standards

    MIL-I-13857 Impregnation of Metal Castings

    MIL-M-46062 Magnesium Alloy Castings, High Strength

    MIL-M-6857 Heat Treatment of Magnesium Alloy Castings

    MIL-STD-129 Marking for Shipment and Storage (Military Agencies)

    MIL-STD-276 Impregnation of Porous Non-ferrous Metal Castings

    ICS Code

    ICS Number Code 77.150.20 (Magnesium products)

    UNSPSC Code

    UNSPSC Code 31101601(Non ferrous alloy sand casting)

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

    DOI: 10.1520/B0080-15

    Citation Format

    ASTM B80-15, Standard Specification for Magnesium-Alloy Sand Castings, ASTM International, West Conshohocken, PA, 2015, www.astm.org

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