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    ASTM B94-13

    Standard Specification for Magnesium-Alloy Die Castings

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    1. Scope

    1.1 This specification covers magnesium-alloy die castings. Current alloy compositions are specified under the designations shown in Table 1.2

    A Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements is suspected or indicated in the course of routine analysis, further analysis shall be made to determine that these other elements are not in excess of 0.3 %.
    B The following applies to all specified limits in this table: For purposes of acceptance and rejection an observed value or a calculated value obtained from analysis should 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 procedure prescribed in Section 3 of Practice E29.
    C Where single units are shown, these indicate the maximum amounts permitted.
    D  ASTM alloy designations were established in accordance with Practice B951, UNS designations were established in accordance with Practice E527.
    E In alloys AS41B, AM50A, AJ52A, AM60B, AJ62A, and AZ91D, if either the minimum manganese limit or the maximum iron limit is not met, then the iron/manganese ratio shall not exceed 0.010, 0.015, 0.015, 0.021, 0.021, and 0.032, respectively.
    F Alloys AJ52A, AJ62A, and AS21B are patented compositions 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 standard. Users of this standard 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.

    1.2 The values stated in inch-pound units are 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

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

    B660 Practices for Packaging/Packing of Aluminum and Magnesium Products

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

    B953 Practice for Sampling Magnesium and Magnesium Alloys for Spectrochemical Analysis

    B954 Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission Spectrometry

    E23 Test Methods for Notched Bar Impact Testing of Metallic Materials

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

    E505 Reference Radiographs for Inspection of Aluminum and Magnesium Die Castings

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

    Federal Standards

    FED-STD-123

    Military Standard

    MIL-STD-129 Marking for Shipment and Storage

    American Die Casting Institute

    “E” Series Product Standards

    ICS Code

    ICS Number Code 77.120.20 (Magnesium and magnesium alloys)

    UNSPSC Code

    UNSPSC Code

    Referencing This Standard
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    DOI: 10.1520/B0094-13

    Citation Format

    ASTM B94-13, Standard Specification for Magnesium-Alloy Die Castings, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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