EN 10087 46S20 Uncoated Steel – High Strength & Cutting Performance
The free-cutting steel 46S20, suitable for quenching and tempering, is used for bulk parts of higher strength, especially for lower requirements to ductility in transversal direction opposite to comparable C-steels (e.g. C45). Increased cutting speed represents an advantage, the increased cracking risk at rising C-content has to be considered. Application in auto industry, as well as in apparatus equipment and machine engineering (e.g. screws, nuts, small-size parts).
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.8 - 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 | 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 | 207 - 234 [-] | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Medium Carbon Steel |
Shear modulus | 20.0 °C | 81 GPa | |
Tensile strength | 20.0 °C | 560 - 800 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 | 1380 - 1514 °C | Typical for Medium Carbon Steel | |
Specific heat capacity | -100.0 °C | 423 J/(kg·K) | |
20.0 °C | 461 J/(kg·K) | ||
100.0 °C | 479 - 490 J/(kg·K) | ||
200.0 °C | 499 - 530 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 | 41.7 - 49 W/(m·K) | |
100.0 °C | 43.4 W/(m·K) | ||
200.0 °C | 43.2 W/(m·K) | ||
300.0 °C | 41.4 W/(m·K) | ||
400.0 °C | 39.1 W/(m·K) | ||
500.0 °C | 36.7 W/(m·K) | ||
600.0 °C | 34.1 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 11.6 mm²/s | |
100.0 °C | 11.3 mm²/s | ||
200.0 °C | 10.5 mm²/s | ||
300.0 °C | 9.5 mm²/s | ||
400.0 °C | 8.3 mm²/s | ||
500.0 °C | 7.1 mm²/s | ||
600.0 °C | 5.8 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 1.2E-7 - 2.5E-7 Ω·m |
100.0 °C | 2.95E-7 Ω·m | |
200.0 °C | 3.65E-7 Ω·m | |
300.0 °C | 4.53E-7 Ω·m | |
400.0 °C | 5.56E-7 Ω·m | |
500.0 °C | 6.74E-7 Ω·m | |
600.0 °C | 8.13E-7 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.42 - 0.5 % |
Manganese | 0.7 - 1.1 % |
Phosphorus | 0.06 % |
Silicon | 0.4 % |
Sulfur | 0.15 - 0.25 % |
Metal
- ISO 683-4 Grade 35SPb20 Untreated – High‑Strength Free‑Cutting Steel for Automotive and Machinery Parts
- ISO 683-4 Grade 38SMn28 Untreated Steel – Ideal for High‑Strength Turned Parts
- ISO 683-4 Grade 38SMnPb28 Untreated: High-Machinability Quenchable Steel for Precision Turned Parts
- EN 10087 Grade 46SPb20 – Untreated Free‑Cutting Steel for Automotive & Machine Engineering
- ISO 683-4 Grade 35S20 Untreated Steel – High-Performance Cutting and Quenching Properties
- EN 10277-3 46S20 Cold-Drawn Steel – High Strength, Low Ductility for Automotive & Machinery Applications
- EN 10087 Grade 46S20 – High‑Strength Quenched & Tempered Steel
- ISO 683-4 Grade 10SPb20 Untreated: High-Performance Free-Cutting Steel
- ISO 683-4 Grade 11SMnPb30: Untreated, High-Machinability Free-Cutting Steel
- ISO 683-4 Grade 11SMnPb37 – Untreated, High‑Machinability Free‑Cutting Steel