EN 10277-4: Grade 20MnCrS5 Soft‑Annealed and Cold‑Drawn Steel (+A+C)
Steel 20MnCrS5 is compared to 20 MnCr 5 suitable for parts of higher dimension in vehicle and machine engineering at higher core strength and enhanced workability (gears, joint parts, gear wheels, bolts). Lowest application temperature -25°C, most favorable application area up to 80 mm nominal size. As a bright steel product it is used in the form of bars, bright, straight, in various conditions (see DIN EN 10277 : 1999-10).
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Elastic modulus | -100.0 °C | 217 GPa |
20.0 °C | 212 GPa | |
100.0 °C | 207 GPa | |
200.0 °C | 199 GPa | |
300.0 °C | 192 GPa | |
400.0 °C | 184 GPa | |
500.0 °C | 175 GPa | |
600.0 °C | 164 GPa | |
Hardness, Brinell | 20.0 °C | 250 - 270 [-] |
Poisson's ratio | 20.0 °C | 0.28 [-] |
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 | 1.21E-5 1/K | ||
200.0 °C | 1.27E-5 1/K | ||
300.0 °C | 1.32E-5 1/K | ||
400.0 °C | 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 | -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 | 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 | 45.9 W/(m·K) | |
100.0 °C | 46.4 W/(m·K) | ||
200.0 °C | 45.6 W/(m·K) | ||
300.0 °C | 43.5 W/(m·K) | ||
400.0 °C | 40.9 W/(m·K) | ||
500.0 °C | 38.2 W/(m·K) | ||
600.0 °C | 35.5 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 12.7 mm²/s | |
100.0 °C | 12 mm²/s | ||
200.0 °C | 11 mm²/s | ||
300.0 °C | 9.9 mm²/s | ||
400.0 °C | 8.7 mm²/s | ||
500.0 °C | 7.3 mm²/s | ||
600.0 °C | 6 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 2.27E-7 Ω·m |
100.0 °C | 2.76E-7 Ω·m | |
200.0 °C | 3.46E-7 Ω·m | |
300.0 °C | 4.31E-7 Ω·m | |
400.0 °C | 5.32E-7 Ω·m | |
500.0 °C | 6.48E-7 Ω·m | |
600.0 °C | 7.81E-7 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.17 - 0.22 % |
Chromium | 1 - 1.3 % |
Manganese | 1.1 - 1.4 % |
Phosphorus | 0.03 - 0.04 % |
Silicon | 0.4 % |
Sulfur | 0.02 - 0.04 % |
Metal
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