TANTALOY 61 METAL is a tantalum-tungsten alloy of high density. It was developed for use as a spring material or for other elastic parts which must operate under chlorinating or severe acid conditions. Its combination of mechanical and anti-corrosion properties has led to extensive use for chlorinator valve springs. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ta-6. Producer or source: Fansteel Metallurgical Corporation.