Ledeburitic 12% chrome steel with increased additions of W-, Mo- and V, high wear resistance,
good toughness, high pressure resistance, minimal change in dimension, secondary hardening.
It is a high hardness ledeburitic steel with a high content of W, Mo and V.
It has high wear resistance. Its secondary hardenability allows CVD/PVD coating.
Its dimensional stability is also very good.
CPR Next Generation Tool Steel
Upper and lower parts of molds that cut cold sheet metal in thicknesses of 10 mm and below, punches, calibration relays, pushers, pull rollers, profile relays, die collars, reamers, conical reamers, abrasive powders, pressing tools.
It works longer than 2379 in threading combs. Surface hardness can be increased up to 64 – 65 HRC by nitration and oxidation.
Carbon |
Chromium |
Molybdenum |
Vanadium |
Wolfram |
C |
Cr |
Mo |
V |
W |
1,20 |
12,00 |
1,40 |
1,70 |
2,50 |
Temperature |
Cooling |
Hardness |
|
Soft annealing |
820 – 850°C |
Furnace |
250 HB |
Stress relief annealing |
600 – 650°C |
Furnace |
|
Hardening |
1130 – 1150°C |
oil, pressure gas (N2), air or hot bath 500 – 550°C |
See Tempering Diagram |
Hardness |
58 – 64 |
HRC |
Coefficient of thermal expansion |
10,6 – 12,0 |
1/K * 10-6 |
Thermal conductivity (20°C) |
22,8 |
W/mK |
Density |
7,85 |
g/cm3 |
