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Basic characteristics:
TC21， Titanium alloy is a new type of high-strength, high toughness, and high damage tolerance titanium alloy developed by Northwest Nonferrous Metals Research Institute. It belongs to the Ti Al Sn Zr Mo Cr Nb (- Ni Si) two-phase titanium alloy system, which has good strength, plasticity, fracture toughness, and lower crack propagation rate.
TC21 (GB/T 3620.1-2016) chemical composition:
chemical composition TC21 Fe C Cr Mo N Nb Zr - - 0.9 2.2 - 1.7 1.6 0.15 0.08 2 3.3 0.05 2.3 2.5 Al Sn H O Single Others Ti 5.2 1.6 - - - - Remainder 6.8 2.5 0.015 0.15 0.1 0.4 The chemical composition includes chemical components with unspecified values in the table. Analysis should only be conducted if it is assumed to exist or in routine analysis, and there are indications that its composition will exceed the specified value.
TC21 application areas：
The nominal composition of TC21 is Ti-6Al-2Zr-2Sn-2Mo-1.5Cr-2Nb, which is one of the titanium alloys with good comprehensive mechanical properties in China. It can be used in wing joint structural components, fuselage landing gear connection frames, suspension engine joints and other parts of aircraft, as well as in the production of important or critical load-bearing components with high strength and durability requirements..
