Cold work steel, high vanadium and tungsten, very good secondary hardness,
good toughness, minimal size changes.
It is a steel containing high vanadium and tungsten, with a very good secondary hardening ability.
It has started to replace standard steels with its dimensional stability and good toughness.
It is a New Generation Cold Work Tool Steel.
Cutting – bending dies, press profile rollers, threading combs, punches
Carbon |
Chromium |
Molybdenum |
Vanadium |
Wolfram |
C |
Cr |
Mo |
V |
W |
1,10 |
7,50 |
1,50 |
2,10 |
1,10 |
Temperature |
Cooling |
Hardness |
|
Soft annealing |
800 – 840°C |
Furnace |
250 HB |
Stress relief annealing |
600 – 650°C |
Furnace |
|
Hardening |
1120 – 1140°C |
oil, pressure gas (N2), air or hot bath 500 – 550°C |
see tempering diagram |
Hardness |
58 – 62 |
HRC |
Coefficient of thermal expansion |
11,4 – 12,3 |
1/K * 10-6 |
Thermal conductivity (20°C) |
24,8 |
W/mK |
Density |
7,85 |
g/cm3 |
