DIN 17200 Grade 38Cr2 Steel – Cold‑Sheared, Superior Strength & Durability
Steel 38 Cr 2 is suitable for a little higher strained parts of lower dimension in vehicle manufacturing, engine and machine engineering (e.g. transmission parts, axles, shafts). Lowest application temp. -25 °C.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.8 - 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
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 | 175 - 184 GPa | |
500.0 °C | 175 GPa | |
600.0 °C | 164 GPa | |
Hardness, Brinell | 20.0 °C | 255 [-] |
Poisson's ratio | 20.0 °C | 0.28 [-] |
Shear modulus | 20.0 °C | 81 GPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | -100.0 °C | 1.08E-5 1/K | |
20.0 °C | 1.19E-5 1/K | ||
100.0 °C | 1.11E-5 - 1.25E-5 1/K | ||
200.0 °C | 1.21E-5 - 1.3E-5 1/K | ||
300.0 °C | 1.29E-5 - 1.36E-5 1/K | ||
400.0 °C | 1.35E-5 - 1.41E-5 1/K | ||
500.0 °C | 1.45E-5 1/K | ||
600.0 °C | 1.49E-5 1/K | ||
Max service temperature, long | -25 - 0 °C | ||
Melting point | 1382 - 1529 °C | Typical for Chromium 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 | 44.9 - 50 W/(m·K) | |
100.0 °C | 46.2 W/(m·K) | ||
200.0 °C | 45.5 W/(m·K) | ||
300.0 °C | 43.1 W/(m·K) | ||
400.0 °C | 40.4 W/(m·K) | ||
500.0 °C | 37.7 W/(m·K) | ||
600.0 °C | 34.9 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 12.5 mm²/s | |
100.0 °C | 12 mm²/s | ||
200.0 °C | 11 mm²/s | ||
300.0 °C | 9.8 mm²/s | ||
400.0 °C | 8.6 mm²/s | ||
500.0 °C | 7.3 mm²/s | ||
600.0 °C | 5.9 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 1.9E-7 - 2.32E-7 Ω·m |
100.0 °C | 2.77E-7 Ω·m | |
200.0 °C | 3.47E-7 Ω·m | |
300.0 °C | 4.35E-7 Ω·m | |
400.0 °C | 5.38E-7 Ω·m | |
500.0 °C | 6.56E-7 Ω·m | |
600.0 °C | 7.95E-7 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.35 - 0.42 % |
Chromium | 0.4 - 0.6 % |
Manganese | 0.5 - 0.8 % |
Phosphorus | 0.04 % |
Silicon | 0.4 % |
Sulfur | 0.03 % |
Metal
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