Crucible CSM #2 is an alloy tool steel recommended for die casting dies and plastic molds. It is usually heat treated to two hardness levels, either 200 Brinell or 300 Brinell. CSM #2 machines readily and polishes easily at both hardness levels. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-210. Producer or source: Crucible Steel Company of America.