GRAPH-MO is an oil hardening, non-deforming type tool steel possessing remarkable machining properties. This datasheet provides information on composition, hardness, tensile properties, and compressive strength as well as fracture toughness. It also includes information on heat treating. Filing Code: TS-40. Producer or source: Latrobe Steel Company. Originally published November 1955, revised May 1984, revised July 1991.

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