TIMETAL 21S (Ti-15%Mo-3%Nb-3%Al-0.2Si) offers the good cold formability and weldability of a beta strip alloy, but with greatly improved oxidation resistance and creep strength. Aerospace applications include engine exhaust plug and nozzle assemblies. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming and heat treating. Filing Code: TI-105. Producer or source: Titanium Metals Corporation (Timet). Originally published March 1993, revised October 1998.