FANSTEEL 61 METAL is a high-density, high-strength alloy developed for use as a spring material or for other elastic components that must operate under chlorinating or severe acid conditions. 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-3. Producer or source: Fansteel Metallurgical Corporation.