JESSOP TRUFORM is the general-purpose, oil-hardening, non-deforming alloy tool steel for applications where dimensional accuracy is required. It shows very low distortion in heat treating and very high safety (against cracking) in hardening. Truform has deep-hardening properties, a fine-grain structure, and is unusually tough. Its many applications include blanking dies, master tools, milling and form cutters, paper knives, punches and taps. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-411. Producer or source: Jessop Steel Company.