20MnCr5 Steel Alloy Steel Round Bar
| Carbon |
0.14 - 0.19 |
Manganese |
1 - 1.3 |
| Silicon |
max 0.4 |
Sulfur |
max 0.035 |
| Phosphorus |
max 0.025 |
Chromium |
00.8 - 1.1 |
20MnCr5 is used for materials with a required core tensile strength of 1000 – 1300 N/mm² and just right carrying resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling materials.
STEEL PROPERTIES
- 20MnCr5 is used for materials with a required core tensile strength of 1000 – 1300 N/mm² and just right carrying resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling materials.
APPLICATION
Alloyed case hardening steel for parts with a required core tensile strength of 1000 – 1300 N/mm² and good wearing resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling parts.
PHYSICAL PROPERTIES
| Thermal Conductivity at °C |
W / (m*K) |
| 20 |
11.7 |
| 350 |
12.8 |
| 700 |
13.5 |
HEAT TREATMENT
| Soft Annealing °C |
750-780 |
| Cooling |
Furnace |
| Hardness HB |
max. 218 |
| Stress-relief Annealing °C |
550-600 |
| Cooling |
Furnace |
| 1st pre-heating °C |
2nd and 3rd |
Hardening °C |
Quenching |
Tempering °C |
Hardness after Teperature HRC |
| up to approx. 400 in an air-circulating furnace |
740 and 840 |
780-820 |
810 °C Oil ,Quench |
at least twice 150-200 | 60 – 62 |
