TZM National Standard (ASTM)
TZM national standard (ASTM, Standard Specification for Molybdenum and Molybdenum Alloy Bar, Rod, and Wire) 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.
1.1 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 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
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