Abstract VEGA is a manganese, chromium, molybdenum alloy steel combining the deep hardening characteristics of air-hardening steels with the simplicity of low temperature heat treatment possible in many oil-hardening steels. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-23. Producer or source: Carpenter Technology Corporation.