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310S stainless steel, also known as UNS S31008 and W.Nr. 1.4845, is an austenitic heat-resistant alloy with excellent high-temperature strength and oxidation resistance. Its low carbon content improves weldability and reduces the risk of sensitization during welding and high-heat exposure.
310S is commonly used in furnace components, heat exchangers, kilns, and petrochemical equipment. Its superior performance in high-temperature, oxidizing, and mildly corrosive environments makes it ideal for thermal processing, power generation, and chemical industries.
| Chemical Composition | 310S |
| Carbon | 0.08 max |
| Manganese | 2.00 max |
| Silicon | 1.50 max |
| Phosphorus | 0.045 max |
| Sulphur | 0.030 max |
| Chromium | 24.00 – 26.00 |
| Nickel | 19.00 – 22.00 |
| Property | 310S |
| Density, lb/in3 | 0.29 |
| Modulus of Elasticity, psi | 29.0 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 8.8 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 8 |
| Specific Heat, Btu/lb ˚F | 0.12 |
| Electrical Resistivity, Microohm-in | 30.7 |
| Property | 310S |
| Yield Strength, min. (ksi) | 30 |
| Tensile Strength, min. (ksi) | 75 |
| Elongation, min. (%) | 40 |
| Hardness, max. (Rb) | 95 |
| 310S |
| ASTM A240 |
| ASME SA240 |
| AMS 5521 |
Standard product forms of 310S/S31008/1.4845 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at [email protected] for full information.
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