Properties
General
| Property | Value |
|---|---|
Density | 7.8 g/cm³ Show Supplier Material materials with Density of 7.8 g/cm³ |
Mechanical
| Property | Value | Comment |
|---|---|---|
Elastic modulus | 200 GPa Show Supplier Material materials with Elastic modulus of 200 GPa | |
Elongation | 55.0 - 70.0 % Show Supplier Material materials with Elongation of 55.0 - 70.0 % | min. |
Reduction of area | 65.0 - 80.0 % Show Supplier Material materials with Reduction of area of 65.0 - 80.0 % | |
Tensile strength | 680.0 - 750.0 MPa Show Supplier Material materials with Tensile strength of 680.0 - 750.0 MPa |
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 | |
0.000018 1/K Show Supplier Material materials with Coefficient of thermal expansion of 0.000018 1/K | 20 to 300°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 | 12 W/(m·K) Show Supplier Material materials with Thermal conductivity of 12 W/(m·K) | |
100 °C | 14 W/(m·K) Show Supplier Material materials with Thermal conductivity of 14 W/(m·K) | ||
200 °C | 16 W/(m·K) Show Supplier Material materials with Thermal conductivity of 16 W/(m·K) | ||
300 °C | 18 W/(m·K) Show Supplier Material materials with Thermal conductivity of 18 W/(m·K) |
Electrical
| Property | Value |
|---|---|
Electrical resistivity | 7.3e-07 Ω·m Show Supplier Material materials with Electrical resistivity of 7.3e-07 Ω·m |
Magnetic
| Property | Value | Comment |
|---|---|---|
Relative magnetic permeability | 1.005 [-] Show Supplier Material materials with Relative magnetic permeability of 1.005 [-] | max. |
Chemical properties
| Property | Value | Comment |
|---|---|---|
Carbon | 0.05 - 0.1 % Show Supplier Material materials with Carbon of 0.05 - 0.1 % | |
Chromium | 17.5 - 18.5 % Show Supplier Material materials with Chromium of 17.5 - 18.5 % | |
Manganese | 9.0 - 10.0 % Show Supplier Material materials with Manganese of 9.0 - 10.0 % | |
Nickel | 5.0 - 6.0 % Show Supplier Material materials with Nickel of 5.0 - 6.0 % | |
Nitrogen | 0.25 - 0.32 % Show Supplier Material materials with Nitrogen of 0.25 - 0.32 % | |
Phosphorus | 0.03 Show Supplier Material materials with Phosphorus of 0.03 | max. |
Silicon | 0.30000000000000004 - 0.6000000000000001 % Show Supplier Material materials with Silicon of 0.30000000000000004 - 0.6000000000000001 % | |
Sulfur | 0.015 Show Supplier Material materials with Sulfur of 0.015 | max. |
Technological properties
| Property | ||
|---|---|---|
| Application areas | ||
| Cold Forming | Drawing like other austenitic steels, drawing UGI® 202N is not difficult. It strain hardens rapidly with reduction of section but its natural ductility allows to go above 80% of section reduction. The ratio between yield strength and tensile strength after cold work hardening is around 0.9. Mechanical characteristics reached after a high section reduction are significantly higher than those obtained in annealed condition. These high mechanical characteristics make UGI® 202N most adequate for amagnetic springs. Table below gives indicative mechanical characteristics. For diameter below 0.5 mm and above 6.0 mm contact the supplier. | |
| Corrosion properties | UGI® 202N provides a good corrosion resistance in mildly aggressive environments. UGI® 202N is recommended for medium with limited concentration in chlorinated components. High surface hardness in the work-hardened condition and very good corrosion-abrasion properties have led to its use in water and coal filtration industries. The figure below shows the corrosion behavior of UGI® 202N after an abrasion-corrosion test. This test quantifies the rate of weight loss of specimens in an sulfuric acid solution with projection of silicon carbide particles. The solution of H₂SO₄ is at pH=3 and SiC particles (diameter 105 µm and concentration 50 g/l) are projected at a speed of 10 m/s. Grade UGI® 202N appears very good, outperforming AISI 304 and even AISI 316L (see figure on the right side of the material page). | |
| Heat Treatment | Mechanical characteristics of spring wire can be increased by approximathy 250 MPa (depending on diameters) with a thermal treatment applied to springs. Static furnace treatment: T° of treatment, 350/450 °C depending on batch size. Recommanded duration, 0.5 to 1 hour Continuous furnace treatment: T° of treatment, 25 °C more than with static furnace treatment. Minimum duration, 3 minutes | |
| Hot forming | UGI® 202N has good forging properties. Forging temperatures should be in the range of 900°C to 1100°C. After forging, cooling should be quick in order to avoid sensitivation by chromium carbide formation and potential corrosion at grain boundaries. | |
| Other | Available products: Other formats: contact the supplier | |