This alloy is one of the common water hardening tool steel grades available. W1 is basically a simple high carbon steel and is easily hardened by heating and quenching in water, just as with plain carbon steel alloys. The W series of tool steels are a very simple alloy group, low cost, and responsive to simple heating and water quenching for hardening. The alloy does undergo considerable distortion during quenching.
W1 is commonly used for hand operated metal cutting tools, cold heading, embossing taps and reamers as well as cutlery.
Physical properties (avarage values) at ambient temperature
|Modulus of elasticity [103 x N/mm2]||210|
|Thermal conductivity [W/m.K]||46.0|
|Electric resistivity [Ohm mm2/m]||0.17|
|Specific heat capacity [J/g.K]||0.46|
Heat to 680-720oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 192.
Stress relieving to remove machining stresses should be carried out by heating to approx. 600-650oC, 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 780-810oC followed by water. Hardness after quenching is 64 HRC.
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