COLMONOY No. 845 is a complex of both a matrix alloy enriched with an extremely hard grade of tungsten carbide. It is specifically formulated to produce hardness levels of RC 57-62. This datasheet provides information on composition, physical properties, microstructure, hardness, tensile properties, and compressive strength. It also includes information on machining, joining, surface treatment, and powder metal forms. Filing Code: Ni-487. Producer or source: Wall Colmonoy Corporation.