EN 10277‑3 Grade 10S20 – Rolled, Turned & Surface‑Hardened (SH) Steel
The free cutting case hardening steel 10S20 shows considerably uniformer properties of the cross-section and within the melt than semi-killed free cutting steels. 10S20 shows compared to 15 S 10 (DIN 1651 : 1988-04) a slightly higher machinability at relatively favorable ductility properties. Application for thin-walled case hardened parts in car industry, apparatus, equipment and machine engineering. 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 | 210 - 212 GPa | |
100.0 °C | 207 GPa | |
200.0 °C | 193 - 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 | 105 - 156 [-] |
Poisson's ratio | 20.0 °C | 0.28 [-] |
Shear modulus | 20.0 °C | 81 GPa |
Tensile strength | 20.0 °C | 350 - 530 MPa |
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 | 1.1E-5 - 1.25E-5 1/K | ||
200.0 °C | 1.18E-5 - 1.3E-5 1/K | ||
300.0 °C | 1.36E-5 1/K | ||
400.0 °C | 1.32E-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 | 500 °C | Typical for Carbon Steel | |
Melting point | 1480 - 1526 °C | Typical for Low Carbon Steel | |
Specific heat capacity | -100.0 °C | 423 J/(kg·K) | |
20.0 °C | 460 - 461 J/(kg·K) | ||
100.0 °C | 479 - 480 J/(kg·K) | ||
200.0 °C | 499 - 520 J/(kg·K) | ||
300.0 °C | 517 J/(kg·K) | ||
400.0 °C | 536 - 600 J/(kg·K) | ||
500.0 °C | 558 J/(kg·K) | ||
600.0 °C | 587 J/(kg·K) | ||
Thermal conductivity | 20.0 °C | 52.4 - 57.5 W/(m·K) | |
100.0 °C | 55.7 W/(m·K) | ||
200.0 °C | 51.9 W/(m·K) | ||
300.0 °C | 47.6 W/(m·K) | ||
400.0 °C | 43.4 W/(m·K) | ||
500.0 °C | 39.6 W/(m·K) | ||
600.0 °C | 36 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 15.9 mm²/s | |
100.0 °C | 14.3 mm²/s | ||
200.0 °C | 12.5 mm²/s | ||
300.0 °C | 10.8 mm²/s | ||
400.0 °C | 9.2 mm²/s | ||
500.0 °C | 7.6 mm²/s | ||
600.0 °C | 6.1 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 1.1E-7 Ω·m |
100.0 °C | 2.3E-7 Ω·m | |
200.0 °C | 3.04E-7 Ω·m | |
300.0 °C | 3.94E-7 Ω·m | |
400.0 °C | 5.01E-7 Ω·m | |
500.0 °C | 6.25E-7 Ω·m | |
600.0 °C | 7.7E-7 Ω·m | |
Magnetic
| Property | Value | Comment |
|---|---|---|
Curie temperature | 770 °C | Typical for Low Carbon Steel |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.07 - 0.13 % |
Manganese | 0.7 - 1.1 % |
Phosphorus | 0.06 % |
Silicon | 0.4 % |
Sulfur | 0.15 - 0.25 % |
Metal
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