DIN 17200 Grade 25CrMoS4 - Cold-Sheared with Enhanced Strength (S)
Steel 25 CrMoS 4 is suitable for parts of high strength and ductility requirements at mean and higher heat-treatment sections and enhanced workability in vehicle manufacturing, engine and machine engineering (e.g. crankshafts, steering knuckles, pinions). Lowest application temp. -40 °C.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.83 - 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | -100.0 °C | 217 GPa | |
20.0 °C | 210 - 212 GPa | ||
100.0 °C | 205 - 207 GPa | ||
200.0 °C | 195 - 199 GPa | ||
300.0 °C | 185 - 192 GPa | ||
400.0 °C | 184 GPa | ||
500.0 °C | 175 GPa | ||
600.0 °C | 164 GPa | ||
Hardness, Brinell | 20.0 °C | 255 [-] | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Chromium Molybdenum Steel |
Shear modulus | 20.0 °C | 81 GPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | -100.0 °C | 1.05E-5 1/K | |
20.0 °C | 1.15E-5 1/K | ||
100.0 °C | 1.11E-5 - 1.21E-5 1/K | ||
200.0 °C | 1.21E-5 - 1.27E-5 1/K | ||
300.0 °C | 1.29E-5 - 1.32E-5 1/K | ||
400.0 °C | 1.35E-5 - 1.36E-5 1/K | ||
500.0 °C | 1.4E-5 1/K | ||
600.0 °C | 1.44E-5 1/K | ||
Max service temperature, long | -40 - 0 °C | ||
Melting point | 1382 - 1529 °C | Typical for Chromium Molybdenum Steel | |
Specific heat capacity | -100.0 °C | 423 J/(kg·K) | |
20.0 °C | 460 - 461 J/(kg·K) | ||
100.0 °C | 479 J/(kg·K) | ||
200.0 °C | 499 J/(kg·K) | ||
300.0 °C | 517 J/(kg·K) | ||
400.0 °C | 536 J/(kg·K) | ||
500.0 °C | 558 J/(kg·K) | ||
600.0 °C | 587 J/(kg·K) | ||
Thermal conductivity | 20.0 °C | 41 - 50 W/(m·K) | |
100.0 °C | 42.7 W/(m·K) | ||
200.0 °C | 42.8 W/(m·K) | ||
300.0 °C | 41.6 W/(m·K) | ||
400.0 °C | 39.9 W/(m·K) | ||
500.0 °C | 37.8 W/(m·K) | ||
600.0 °C | 35.6 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 11.4 mm²/s | |
100.0 °C | 11 mm²/s | ||
200.0 °C | 10.3 mm²/s | ||
300.0 °C | 9.5 mm²/s | ||
400.0 °C | 8.5 mm²/s | ||
500.0 °C | 7.3 mm²/s | ||
600.0 °C | 6 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 1.8E-7 - 2.54E-7 Ω·m |
100.0 °C | 3E-7 Ω·m | |
200.0 °C | 3.69E-7 Ω·m | |
300.0 °C | 4.51E-7 Ω·m | |
400.0 °C | 5.45E-7 Ω·m | |
500.0 °C | 6.54E-7 Ω·m | |
600.0 °C | 7.78E-7 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.22 - 0.29 % |
Chromium | 0.9 - 1.2 % |
Manganese | 0.6 - 0.9 % |
Molybdenum | 0.15 - 0.3 % |
Phosphorus | 0.04 % |
Silicon | 0.4 % |
Sulfur | 0.02 - 0.035 % |
Metal
- DIN 17200 Grade 28CrS4: Cold‑Sheared Steel for High‑Load Automotive Parts (+S)
- DIN 17200 Grade 25CrMo4 Cold‑Sheared (+S) Steel – High Strength & Ductility for Automotive & Machinery
- DIN 17200 Grade 37Cr4 Steel – Cold‑Sheared, High‑Performance for Vehicle and Engine Components
- DIN 17200 Grade 37CrS4 – Cold Sheared & Heat‑Treated for Superior Performance
- DIN 17200 Grade 38Cr2 Steel – Cold‑Sheared, Superior Strength & Durability
- DIN 17200 Grade 46Cr2 – Cold‑Sheared Steel with Superior Strength for Automotive & Machinery Applications
- DIN 17200 Grade 28Cr4 – Cold‑Shear Treated Steel for High‑Load Automotive Parts
- DIN 17200 Grade 28Mn6 Steel – Cold Shear (+S) for Automotive & Machine Applications
- DIN 17200 Grade 34CrMoS4 – Cold Shear Treatment (+S) for High-Performance Automotive Components
- DIN 17200 Grade 34CrS4 – Cold Shear Treated Steel for High-Performance Applications