DIN 17230 100CrMo7 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:1412°C - 1433°C
Application:Ball and Roller Bearing Steels; Technical Conditions of Delivery
DIN 17230 100CrMo7 Material Chemical Composition
The chemical composition of the DIN 17230 100CrMo7 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.2000 | 0.4000 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0300 |
| Nickel (Ni) | - | 0.3000 |
| Molybdenum (Mo) | 0.1500 | 0.2500 |
| Manganese (Mn) | 0.2500 | 0.4500 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | 1.6500 | 1.9500 |
| Carbon (C) | 0.9000 | 1.0500 |
DIN 17230 100CrMo7 Material Mechanical Properties
The mechanical properties of the DIN 17230 100CrMo7 steel are as follows:
| YieldRp0.2 | ≤ 979 (MPa) |
| TeileRm | ≤ 477 (MPa) |
| ImpactKV/Ku | 34(J) |
| ElongationA | 42% |
| Reduction in cross section on fractureZ | 22% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 441 |
DIN 17230 100CrMo7 Material Thermal Properties
The thermal performance parameters of the DIN 17230 100CrMo7 steel are as follows:
| Temperature (°C) | 23 | 251 | 727 |
| Modulus of elasticity (GPa) | - | 838 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 43.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 414 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.22 | - | - |
| Deity (kg/dm³) | - | - | 111 |
| Poisson’s coefficient, ν | - | - | 311 |