1.3243 (HS6-5-2-5) High Speed Steel
1.3243 (HS6-5-2-5)
1.3243 is a co-alloyed high-speed steel with high hot strength and excellent toughness.
Manufactured by Dörrenberg Edelstahl.
Area of Application
Cutting of high strength material, highly stressed tools for twist and thread drills, milling cutters, profile knives, broaches.
Chemical Composition
Code: 1.3243, EMo5Co5, HS6-5-2-5C AISI: M35
Carbon |
Chromium |
Molybdenum |
Vanadium |
Wolfram |
Cobalt |
C |
Cr |
Mo |
V |
W |
Co |
0,92 |
4,10 |
5,00 |
1,90 |
6,40 |
4,80 |
Heat Treatment
|
|
Temperature |
Cooling |
Hardness |
Soft Annealing |
800 - 860 °C |
Furnace |
269 HB |
Stress Relief Annealing |
600 - 650°C |
Furnace |
|
Hardening |
1160 - 1230°C |
oil, pressure gas (N2), air or hot bath 500 - 550°C |
see tempering diagram |
Mechanical Properties
Hardness |
60 - 64 |
HRC |
Physical Properties
Thermal Expansion Coefficient |
9,7 - 12,5 |
1/K * 10-6 |
Thermal Conductivity (20°C) |
27,4 |
W/mK |
Density |
7,85 |
g/cm3 |
