CARPENTER No. 5-876 is a nickel-chromium-molybdenum triple alloy steel for hard-tempered and for tough-tempered applications. It is a cold melt, grain controlled, electric furnace steel. This datasheet provides information on composition, hardness, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-4. Producer or source: Carpenter.