ISO 683-4 Grade 11SMnPb30: Untreated, High-Machinability Free-Cutting Steel
Free-cutting steel 11SMnPb30 is not intended for heat-treatment and is preferred 11SMnPb30 for higher machinability and surface appearance demands. Steel 11SMnPb30 shows lower crack sensitivity compared to higher S-containing steels (11SMn37, 11SMnPb37). Application for bulk parts in car industry as well as in apparatus and equipment engineering.
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
- 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
- ISO 683-4 Grade 35S20 Untreated Steel – High-Performance Cutting and Quenching Properties
- ISO 683-4 Grade 10SPb20 Untreated: High-Performance Free-Cutting Steel
- ISO 683-4 Grade 11SMnPb37 – Untreated, High‑Machinability Free‑Cutting Steel
- 15SMn13 Untreated Steel – ISO 683-4 Grade for Precision Turned Parts
- ISO 683-4 Grade 10S20 Untreated Steel – Superior Machinability & Ductility
- ISO 683-4 Grade 11SMn30 – Untreated Free-Cutting Steel
- ISO 683-4 Grade 11SMn37 Untreated – Free‑Cutting Steel Properties & Applications