EN 10270-1 Grade SL: Patented Cold-Drawn Steel Wire for Low-Load Springs
The patented cold drawn steel wire type SL (S-static load L-low tensile strength) made of unalloyed steel is used for tension springs, compression springs or torsion springs for mostly low static load. The wire will be delivered in rings (standard delivery type), coils or levelled bars. Different surface conditions by arrangement if no arrangements where done, the condition is up to the producer. All surface types can be delivered with oiled surface. More information regarding surface conditions see EN 10270-1.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 206 GPa | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for High Carbon Steel |
Reduction of area | 20.0 °C | 30 - 40 % | |
Shear modulus | 20.0 °C | 81.5 GPa | |
Tensile strength | 20.0 °C | 1060 - 1970 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.32E-5 1/K | Typical for High Carbon Steel |
Max service temperature | 500 °C | Typical for Carbon Steel | |
Melting point | 1289 - 1478 °C | Typical for High Carbon Steel | |
Specific heat capacity | 23.0 °C | 486 J/(kg·K) | Typical for High Carbon Steel |
Thermal conductivity | 23.0 °C | 36 W/(m·K) | Typical for High Carbon Steel |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Electrical resistivity | 23.0 °C | 1.43E-7 - 1.74E-7 Ω·m | Typical for Carbon Steel |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.35 - 1 % |
Copper | 0.2 % |
Manganese | 0.4 - 1.2 % |
Phosphorus | 0.04 % |
Silicon | 0.1 - 0.3 % |
Sulfur | 0.035 % |
Technological properties
| Property | ||
|---|---|---|
| Features | Spring | |
Metal
- EN 10277-5 Grade 25CrMo4 Cold-Drawn Steel – High Strength & Ductility
- EN 10277-5 Grade 25CrMoS4 Cold-Drawn Steel – High Strength & Ductility for Automotive & Industrial Applications
- EN 10277-5 Grade 38Cr2 Cold Drawn Steel – High Strength & Low-Temperature Performance
- EN 10277-5 Grade 38CrS2 Cold Drawn Steel – Precision Alloy for Automotive and Machinery
- DIN 17223-1 Grade B Patented Cold-Drawn Steel Wire – Ideal for Springs
- EN 10270-1 Grade SM Patented Cold-Drawn Steel Wire for High-Performance Springs
- DIN 17223-1 Grade D Patented Cold‑Drawn Steel Wire – Premium for High‑Load Springs
- EN 10270-1 Grade DH: Patented Cold-Drawn Steel Wire for High-Performance Springs
- EN 10270-1 Grade DM: Patented Cold-Drawn Steel Wire for Springs
- EN 10270-1 Grade SH Cold-Drawn Steel Wire – Ideal for High Static Load Springs