Key Specifications/Special Features:
Description
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.
Applications
W1 is commonly used for hand operated metal cutting tools, cold heading, embossing taps and reamers as well as cutlery.
Chemical Composition (in weight%)
C 1.05
Si 0.20
Mn 0.23
Physical properties (average values) at ambient temperature
Modulus of elasticity [103xN/mm2]: 210
Density [g/cm3]: 7.85
Thermal conductivity [W/m. K]: 45.0
Electric resistivity [Ohm mm2/m]: 0.20
Specific heat capacity [J/g. K]: 0.46
Soft Annealing
Heat to 680-720ºC, cool slowly in furnace. This will produce a maximum Brinell hardness of 213.
Stress Relieving
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.
Hardening
Harden from a temperature of 760-800ºCfollowed by water quenching. Hardness after quenching is about 65 HRC.
Forging
Hot forming temperature: 1050-800ºC.
Machinability
W1 is a plain carbon steel and machines with ease. It is the base line of 100% machinability on which machinability of the other tool steels is compared.
Corrosion Resistance
This is plain carbon steel and it will corrode unless protected.
Welding
W1 may be welded by all of the standard techniques.
Specifications:
Grade: AISI W1
Standard: DIN, GB, AISI
Diameter: 50-500mm
Certification: ISO
Technical treatment: cold-rolled and hot rolled
| C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
| 0.03 |
0.5 |
0.5 |
0.02 |
0.005 |
11.5~13.5 |
4.5~6.5 |
1.5~3.5 |
Mechanical behavior
State: hardening and tempering state. The supply status is typically 95 or 110 ksi, 0.2% yield strength
Extreme tensile strength: 115 ksi or more (792N / mm2)
0.2% Yield point: 110 ksi or more (758 N / mm2)
Elongation: 15%
V-notch impact strength (-10 ° C): 78 Joules (60ft-lbf)
Hardness: 33%
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