Titanium alloy tube performance: titanium alloy tube is a new type of metal, the performance of titanium is related to the content of carbon, nitrogen, hydrogen, oxygen and other impurities, the purest titanium iodide impurity content does not exceed 0.1%, but its strength is low, high plasticity. The properties of 99.5% industrial pure titanium are: density ρ = 4.5g/cubic centimeter, melting point 1725 °C, thermal conductivity λ = 15.24W/(m.K), tensile strength σb = 539MPa, elongation δ = 25%, section shrinkage ψ = 25%, elastic modulus E = 1.078×105MPa, hardness HB195