Thyrodur 2842 is an oil-hardening, nondeforming manganese tool steel ideally suited for general-purpose tool room work. It can be hardened safely, even in the most intricate sections, and shows very little warpage or change in size during hardening. This datasheet provides information on composition, physical properties, and hardness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-658. Producer or source: Schmolz + Bickenbach USA Inc.