EN 10277-3: Grade 11SMnPb30 – Rolled & Turned Steel for Automotive & Equipment Applications
Free cutting steel 11SMnPb30 is unsuitable for heat-treatment and is preferred steel 11SMn30 for higher requirements to machinability and surface appearance. 11SMnPb30 shows a lower cracking sensitivity compared to steel with a higher S-content (11SMn37, 11SMnPb37). Application for bulk parts in car industry as well as in apparatus and equipment 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 | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 210 GPa | |
200.0 °C | 193 GPa | ||
300.0 °C | 185 GPa | ||
400.0 °C | 175 GPa | ||
Hardness, Brinell | 20.0 °C | 107 - 169 [-] | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Low Carbon Steel |
Shear modulus | 20.0 °C | 81 GPa | |
Tensile strength | 20.0 °C | 360 - 570 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.1E-5 1/K | |
200.0 °C | 1.18E-5 1/K | ||
400.0 °C | 1.32E-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 | 20.0 °C | 460 J/(kg·K) | |
100.0 °C | 480 J/(kg·K) | ||
200.0 °C | 520 J/(kg·K) | ||
400.0 °C | 610 J/(kg·K) | ||
Thermal conductivity | 20.0 °C | 54.4 W/(m·K) | |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 1.1E-7 Ω·m |
Magnetic
| Property | Value | Comment |
|---|---|---|
Curie temperature | 770 °C | Typical for Low Carbon Steel |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.14 % |
Lead | 0.2 - 0.35 % |
Manganese | 0.9 - 1.3 % |
Phosphorus | 0.11 % |
Silicon | 0.05 % |
Sulfur | 0.27 - 0.33 % |
Metal
- EN 10277-3 Grade 35SPb20 – Rolled & Turned Steel with Hardening + SH
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- EN 10277‑3 Grade 46SPb20 Rolled & Turned Steel (+SH) – High Strength, Low Ductility
- EN 10277-3 Grade 35S20: Rolled & Turned Steel with Surface Hardening
- EN 10277-3 Grade 46S20 Steel – Rolled & Turned (+SH) for High‑Strength Cutting Applications
- EN 10277-3 Grade 11SMnPb37 – Rolled & Turned Steel (Superheated)
- EN 10277-3 Grade 10SPb20: Rolled & Turned Case-Hardened Steel (+SH)
- EN 10277‑3 Grade 10S20 – Rolled, Turned & Surface‑Hardened (SH) Steel
- EN 10277-3: 11SMn30 Grade Steel – Rolled, Turned, and Surface-Hardened
- EN 10277-3 11SMn37 Steel: Rolled & Turned Grade with Superior Surface Finish