Designation by Standards
Chemical Composition (in weight %)
This steel is one of the shock resisting tool steel types with very good thoughness in combination with high hardenability. Impact-resistant, tungsten-alloyed cold-work tool.
For cutting tools (dies, punchers) for plate, woodworking tools, blanking dies for cutting sheet metals up to 12 mm thickness, trimming and spliting dies, cold piercing punches, performing punches, shear blades, chipping knives, pneumatic chisels, coining tools, cold shear blades, ejectors.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 190-210
Density [g/cm3]: 7.93
Thermal conductivity [W/m.K]: 25.0
Electric resistivity [Ohm mm2/m]: 0.30
Specific heat capacity[J/g.K]: 0.46
Coefficient of Linear Thermal Expansion 10-6 oC-1
Heat to 710-750oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 225.
Stress relieving to remove machining stresses should be carried out by heating to 650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Harden from a temperature of 860-900oC followed by oil or hot bath (180-220oC) quenching. Hardness after quenching is 60 HRC.
Tempering temperature: See the data bellow.
Tempering Temperature (oC) vs. Hardness (HRC)
Hot forming temperature: 1050-900oC.
Corrosion resistance of this alloy is better than that of plain carbon steels. However it will rust unless given protective treatment.
All technical information is for reference only.