Designation by Standards
Chemical Composition (in weight %)
Special cold work tool steel, air or oil hardenable with highest toughness.
Forging tools, dies of all sorts, shapes and sizes, hot forging and pressing tools for steel and metal. Moulds, bushings, piercers, etc.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.86
Heat to 610-850oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 295.
Stress relieving to remove machining stresses should be carried out by heating to approx. 650oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Harden from a temperature of 880-910oC followed by air or oil quenching or warm bath quenching 180-220oC. Hardness after quenching is 56 HRC.
Tempering temperature: See the data bellow.
Tempering Temperature (oC) vs. Hardness (HRC)
Hot forming temperature: 1100-900oC.
All technical information is for reference only.