CPR Tool Steel Material
CPR Material
Ledeburitic 12% chrome steel with increased additions of W, Mo, and V, high wear resistance, good toughness, high-pressure resistance, minimal change in dimension, and secondary hardening.
What is CPR Steel?
CPR material is a special cold work tool steel that contains a high amount of chromium, molybdenum, and vanadium in a ledeburitic structure. CPR steel exhibits high wear resistance. Thanks to its secondary hardenability, CPR cold work tool steel allows for CVD/PVD coating, and it also has excellent dimensional stability.
What is the Hardness Value of CPR Material?
The surface hardness of CPR cold work tool steel can be increased up to 64-65 HRC through nitriding and oxidation processes.
What are the Mechanical Properties of CPR Material?
You can find the material properties of CPR in the "Technical Details" tab. All mechanical and material properties of CPR steel are specified within this tab.
Where is CPR Material Used?
CPR material is preferred for use in molds cutting sheets with thicknesses of 10 mm and below, in the upper and lower parts of cold sheet cutting molds, in punches, calibration rollers, ejectors, drawing cylinders, profile rollers, mold rings, railway ballast, tapered railway ballast, abrasive powders, and pressing tools.
What is the Price of CPR Material?
The price of CPR material varies depending on the product section, dimensions, and surface quality. You can access CPR steel prices through the "Proceed to Online Sales" button on the www.saglammetal.com homepage.
Chemical Composition
Carbon |
Chromium |
Molybdenum |
Vanadium |
Wolfram |
C |
Cr |
Mo |
V |
W |
1,20 |
12,00 |
1,40 |
1,70 |
2,50 |
Heat Treatment
|
|
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 |
Mechanical Properties
Hardness |
58 - 64 |
HRC |
Physical Properties
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 |
