Colmonoy No. 1 is an abrasion-resistant alloy for high-impact applications such as dipper teeth, mill hammers, and catalyst valves. Colmonoy Special No. 1 is an abrasion-resistant iron-base alloy for use where impact is moderate such as ash plows, coal chutes, and dredge cutters. Both alloys can be ground. This datasheet provides information on composition, physical properties, and hardness. It also includes information on surface qualities as well as joining. Filing Code: SS-843. Producer or source: Wall Colmonoy Corporation.