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Basic characteristics:
TB3 alloy is a metastable beta titanium alloy independently developed in China that can be heat treated and strengthened. The alloy exhibits excellent cold forming performance in the solution treated state, with a forging ratio of up to 2.8; The strength and fracture toughness match well in the solid solution aging state. Compared with alpha beta type alloys, this alloy has a higher density and lower resistance to high-temperature creep.
TB3 (GB/T 3620.1-2007) chemical composition:
chemical compostion TB3 Fe C Mo N V Al 0.8 - 9.5 - 7.5 2.7 1.2 0.05 11 0.04 8.5 3.7 H Y O single others Ti - - - - - Remainder 0.015 0.005 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.
Execution standards:
Mechanical properties: Plate GB/T 3621-2007; Bar GB/T 2965-2007; Cold rolled titanium strip coils GB/T 26723-2011; Titanium and titanium alloy wires GB/T 3623-2007; Titanium and titanium alloy pipes GB/T 3624-2010.
Physical property:
Thermal conductivity temperature θ/°C 100 200 300 400 500 600 700 Thermal conductivity
λ/[W/(m.°C)]11.9 13.6 18.3 23.3 25.5 30.1 35.2 Linear expansion coefficient temperature θ/°C 20~100 20~200 20~300 20~400 20~500 20~600 20~700 20~800 Linear expansion coefficient
α/10-6 °C-19.4 9.5 9.5 9.5 9.6 9.7 9.9 10.2 Non magnetic, room temperature resistivity ρ=1.6μΩ.m Application area:
TB3 alloy is a commonly used fastener material, mainly used as a substitute for the production of national standard bolts, screws, and nuts, as well as aerospace standard products and some enterprise standard products, with strengths of 800MPa and 1100MPa. The above two strength levels are required, and excellent oxidation resistance, corrosion resistance or weight reduction are required. For use below 200 ° C or 300 ° C, they can be selected.
