Properties
General
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20 °C | 200 GPa Show Supplier Material materials with Elastic modulus of 200 GPa | |
100 °C | 194 GPa Show Supplier Material materials with Elastic modulus of 194 GPa | ||
200 °C | 183 GPa Show Supplier Material materials with Elastic modulus of 183 GPa | ||
Tensile strength | 1250.0 - 2530.0 MPa Show Supplier Material materials with Tensile strength of 1250.0 - 2530.0 MPa | depending on the diameter |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 0.0000165 1/K Show Supplier Material materials with Coefficient of thermal expansion of 0.0000165 1/K | 20 to 100°C | |
0.0000175 1/K Show Supplier Material materials with Coefficient of thermal expansion of 0.0000175 1/K | 20 to 200°C | ||
Max service temperature | 250.0 °C Show Supplier Material materials with Max service temperature of 250.0 °C | ||
Specific heat capacity | 500 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 500 J/(kg·K) | ||
Thermal conductivity | 20 °C | 15 W/(m·K) Show Supplier Material materials with Thermal conductivity of 15 W/(m·K) | |
100 °C | 16 W/(m·K) Show Supplier Material materials with Thermal conductivity of 16 W/(m·K) | ||
250 °C | 18 W/(m·K) Show Supplier Material materials with Thermal conductivity of 18 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20 °C | 0.00000078 Ω·m Show Supplier Material materials with Electrical resistivity of 0.00000078 Ω·m |
100 °C | 0.00000083 Ω·m Show Supplier Material materials with Electrical resistivity of 0.00000083 Ω·m | |
250 °C | 0.00000090 Ω·m Show Supplier Material materials with Electrical resistivity of 0.00000090 Ω·m |
Magnetic
| Property | Value |
|---|---|
Relative magnetic permeability | 10 [-] Show Supplier Material materials with Relative magnetic permeability of 10 [-] |
Chemical properties
| Property | Value | Comment |
|---|---|---|
Carbon | 0.05 - 0.15 % Show Supplier Material materials with Carbon of 0.05 - 0.15 % | |
Chromium | 16.0 - 19.0 % Show Supplier Material materials with Chromium of 16.0 - 19.0 % | |
Manganese | 2.0 Show Supplier Material materials with Manganese of 2.0 | max. |
Molybdenum | 0.8 Show Supplier Material materials with Molybdenum of 0.8 | max. |
Nickel | 6.0 - 9.5 % Show Supplier Material materials with Nickel of 6.0 - 9.5 % | |
Nitrogen | 0.11 Show Supplier Material materials with Nitrogen of 0.11 | max. |
Phosphorus | 0.045 Show Supplier Material materials with Phosphorus of 0.045 | max. |
Silicon | 1.0 Show Supplier Material materials with Silicon of 1.0 | max. |
Sulfur | 0.015 Show Supplier Material materials with Sulfur of 0.015 | max. |
Technological properties
| Property | ||
|---|---|---|
| Application areas | ||
| Cold Forming | Drawing – Profiling: Like all high-carbon grade austenitic steels, UGI® S302 is hardened significantly during cold transformation. However, it has good ductility, with a potential reduction in cross section of up to 90% or more. Bending – Forming: UGI® S302 is a grade that is ductile even in the cold-worked state: its suitability for forming and bending is very good. Since the ductile/fragile transition temperature is far lower than ambient temperature, fast strain rates are possible, which means it is possible to have high spring conformation rates. | |
| Corrosion properties | UGI® S302 has good corrosion resistance in moderately corrosive environments. It is widely used in humid or aqueous environments with a limited chloride content. The use of UGI® S302 in marine environments should be avoided, especially in its drawn spring-wire version. | |
| Heat Treatment | Springs' mechanical strength can be increased up to 250 Mpa (depending on the diameter) by heat treatment performed on the springs. The Rp0.2/Rm ratio can increase by 5% after such a treatment. Static treatment: Static treatment temp.: 350/425°C, Recommended duration 0.5 to 4 hours depending on batch size Treatment in continuous oven: Heat treatment temp.: 25°C higher than in, Min. treatment duration: 3 minutes | |
| Hot forming | UGI® S302 has good hot forgeability. Forging temperatures are between 900°C and 1100°C. Once forged, the parts must be cooled swiftly, i.e. chilled in water to avoid problems of sensitization of the grade to poten-tial grain-boundary corrosion | |
| Other | Available products: Other: please consult the supplier | |