DIN 17230 44Cr2 Introduce
DIN 17230 is a type of steel that is commonly used in many engineering applications. It is a low-carbon high-strength steel and is sometimes referred to as a high-tensile steel due to its excellent strength-to-weight ratio. It is made up primarily of iron, with a few other elements present in smaller amounts. The small amounts of sulfur, molybdenum, nickel, and chromium make this steel highly corrosion resistant and give it superior fatigue strength.
Smelting temperature:1732°C - 1812°C
Application:Ball and Roller Bearing Steels; Technical Conditions of Delivery
DIN 17230 44Cr2 Material Mechanical Properties
The mechanical properties of the DIN 17230 44Cr2 steel are as follows:
| YieldRp0.2 | ≤ 642 (MPa) |
| TeileRm | ≤ 397 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 32% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 433 |
DIN 17230 44Cr2 Material Thermal Properties
The thermal performance parameters of the DIN 17230 44Cr2 steel are as follows:
| Temperature (°C) | 23 | 554 | 322 |
| Modulus of elasticity (GPa) | - | 163 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 12 |
| Thermal conductivity (W/m·°C) | - | 33.3 | 14.2 |
| Specific thermal capacity (J/kg·°C) | - | 322 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 433 |
| Poisson’s coefficient, ν | - | - | 132 |