Dargraph is an oil-hardening, graphitic steel having excellent resistance to abrasive wear, galling, scuffing and scoring. It is recommended for drawing and forming dies, bushings, pneumatic hammers, wear plates, etc. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-216. Producer or source: Darwin & Milner Inc..