Powder-metallurgical high-speed steel, fine distributed carbide structure,
high compressive strength, excellent toughness, high wear resistance, high thermal stability.
The volume of carbides is a little bit higher, compared to PMD23
PMD M4
Description
APPLICATION AREAS
APPLICATION AREAS
Cold work tools for punching and cutting, precision blanking tools,
cold extrusion and deep drawing dies, coining tools. Also for machining tools ,
like milling cutters, broaches etc.
Technical Details
Technical Details
Chemical Composition
Carbon |
Chromium |
Wolfram |
Molybdenum |
Vanadium |
C |
Cr |
W |
Mo |
V |
1,35 |
4,20 |
5,80 |
4,50 |
4,00 |
Condition of delivery: Soft annealed to max. 260 HB
Heat Treatment
Temperature |
Cooling |
Hardness |
|
Soft Annealing |
870 – 850 °C |
Furnace |
260 HB |
Stress Relief Annealing |
600 – 650 °C |
Furnace |
|
Hardening |
1100 – 1200 °C |
oil, pressure gas (N2), air or hot bath 500 – 550°C |
|
Tempering |
540 – 590 °C |
3 Times |
59 – 65 HRC |
Mechanical Properties
Hardness |
62 – 64 |
HRC |
Physical Properties
Thermal Expansion Coefficient |
10,6 – 12,4 |
1/K * 10-6 |
Thermal Conductivity (20°C) |
23,5 |
W/mK |
Density |
8 |
g/cm3 |
