STP849: Properties and Applications of Molybdenum

    Burman, R
    Manager, Technical Development, AMAX Specialty Metals Corporation, Parsippany, N.J.

    Pages: 15    Published: Jan 1984


    Abstract

    Molybdenum (“Moly”) is the most readily available and least expensive refractory metal. Massive ore reserves and many refinement facilities are located within the United States. The major application for Moly, over 80% of total markets, is that of alloy additions to irons and steels.

    Metallic Moly is consolidated into commercial products by the powder-metallurgy process (P/M) and by the consumable electrode vacuum-arc casting process (VAC). Moly's high melting point and low vapor pressure at extreme temperatures justify its applications to cold wall vacuum or inert atmosphere furnace equipment. These properties, as well as Moly's high thermal conductivity and good electrical and chemical properties, lead to applications in glass-making manufacture of fibers and containers. Moly is also widely used in electronics, solid-state devices, X-ray tubes, crystal growing, heat pipes, photoetched masks, etc.

    TZM Moly Alloy is the best commercial high strength, high temperature material for hot-work tool applications such as die casting (even ferrous metals), hot extrusion (non-ferrous and ferrous metals), hot piercing stainless steel tubes, isothermal forging tools, isothermal shape rolling, hot gas valves and seals, and hot turbine components. The Moly-30% tungsten alloy (Mo-30W) is commercially employed for its high melting temperature of 2829°C (5125°F) and its chemical inertness in corrosive molten zinc, especially the high purity grades. Moly and Moly-base alloys are commercially used for principally high temperature applications in hot equipment, hot working tools, and hot operating machines.

    Keywords:

    TZM Moly Alloy, Mo-30W, molybdenum, applications, properties


    Paper ID: STP32629S

    Committee/Subcommittee: B10.04

    DOI: 10.1520/STP32629S


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