ASTM B387 - 18

    Standard Specification for Molybdenum and Molybdenum Alloy Bar, Rod, and Wire

    Active Standard ASTM B387 | Developed by Subcommittee: B10.04

    Book of Standards Volume: 02.04


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    Abstract

    This specification covers unalloyed molybdenum and molybdenum alloy bar, rod, and wire. The following materials are covered: molybdenum 360, molybdenum 361, molybdenum 363, molybdenum 364, molybdenum 365, and molybdenum 366. These materials shall be manufactured with conventional extrusion, forging, swaging, rolling, and drawing equipment. These shall materials be made by vacuum arc-melted or powder metallurgy methods. The chemical composition shall conform to the required contents of carbon, oxygen, nitrogen, iron, nickel, silicon, titanium, tungsten, zirconium, and molybdenum. Chemical analysis shall be done. Mechanical properties shall conform to the required tension properties: tensile strength, yield strength, elongation, and diamond pyramid hardness. Tension test shall also be done.

    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 unalloyed molybdenum and molybdenum alloy bar, rod, and wire as follows:

    1.1.1 Molybdenum 360—Unalloyed vacuum arc-cast molybdenum.

    1.1.2 Molybdenum 361—Unalloyed powder metallurgy molybdenum.

    1.1.3 Molybdenum Alloy 363—Vacuum arc-cast molybdenum–0.5 % titanium–0.1 % zirconium (TZM) alloy.

    1.1.4 Molybdenum Alloy 364—Powder metallurgy molybdenum–0.5 % titanium–0.1 % zirconium (TZM) alloy.

    1.1.5 Molybdenum 365—Unalloyed vacuum arc-cast molybdenum, low carbon.

    1.1.6 Molybdenum Alloy 366—Vacuum arc-cast molybdenum, 30 % tungsten alloy.

    1.2 This specification covers wire no smaller than 0.020 in. (0.51 mm) in diameter or of equivalent cross-sectional area. Specification F289 covers diameters up to 0.020 in. (0.51 mm).

    1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.4 The following precautionary caveat pertains only to the test method portions of this specification: 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.

    1.5 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.

    ASTM Standards

    E8 Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M

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

    E92 Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials

    E384 Test Method for Microindentation Hardness of Materials

    E1941 Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys by Combustion Analysis

    F289 Specification for Molybdenum Wire and Rod for Electronic Applications


    ICS Code

    ICS Number Code 77.150.99 (Other products of non-ferrous metals)

    UNSPSC Code

    UNSPSC Code 30266002(Non ferrous alloy bar); 30102402(Non ferrous alloy rods)


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

    DOI: 10.1520/B0387-18

    Citation Format

    ASTM B387-18, Standard Specification for Molybdenum and Molybdenum Alloy Bar, Rod, and Wire, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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