REXALLOY 33 is a cast nonferrous cobalt-base alloy of chromium, tungsten and carbon which is recommended for cutting tools and wear-resistant parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as machining and joining. Filing Code: Co-6. Producer or source: Crucible Steel Company of America. Originally published October 1954, revised January 1962.