CEN 38Cr2 and 38CrS2 are medium-carbon, 0.5% Cr direct hardening alloy steels that are also suitable for flame or induction hardening. These steels are low hardenability steels that are generally used for water-quenched parts of moderate section size and for oil-quenched parts of small section size. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-868. Producer or source: European Committee for Standardization (CEN).