(6) Ti-6Al-2Sn-4Zr-6Mo alloy
Ti-6Al-2Sn-4Zr-6Mo is a titanium alloy developed around 1966.
Its heat resistant temperature is about 450˚C. This alloy has high
strength and excellent creep characteristics. The major relevant standard
is AMS 4981. The yield strength of the STA material is 1,105
MPa or higher, tensile strength is 1,170 MPa or higher, and elongation
is 10% or higher at room temperature.3)