Stainless martensitic steel with increased Cr-content for improved corrosion resistance.
This grade is usually supplied in a quenched and tempered condition. Good polishability.
It is a pre-hardened plastic mold steel to 27 – 33 RC. Especially in large molds,
it is preferred because of its ability to be processed quickly thanks to its sulfur content.
Suitable for nitration, induction and flame hardening. Polishability is good. It is magnetic.
It can be used in molds of corrosive plastics and polymers such as PVC
without the need for chrome or nickel plating. It is also used to make
knives, molds and other parts for the food industry.
Carbon |
Chromium |
Molybdenum |
C |
Cr |
Mo |
0,38 |
16,50 |
1,20 |
Temperature |
Cooling |
Hardness |
|
Soft Annealing |
760 – 800 °C |
Furnace |
245 HB |
Stress Relief Annealing |
500 – 550°C |
Furnace |
|
Hardening |
1020 – 1050°C |
C oil, pressure gas (N2), air or hot bath 500 – 550°C |
see tempering diagram |
Hardness |
27 – 33 |
HRC |
Thermal Expansion Coefficient |
10,3- 11,6 |
1/K * 10-6 |
Thermal Conductivity (20°C) |
19,6 |
W/mK |
Density |
7,85 |
g/cm3 |
