310S stainless steel belongs to the austenitic stainless steel family, specifically designed for high-temperature applications where standard grades like 304 and 316 fall short. The "S" in 310S indicates low carbon content (maximum 0.08%), which enhances weldability and reduces carbide precipitation during high-temperature service.
- Chromium: 24-26% (provides oxidation resistance)
- Nickel: 19-22% (enhances high-temperature strength)
- Carbon: Maximum 0.08% (low carbon for improved weldability)
- Iron: Balance
This composition delivers continuous service temperature capability up to **1050°C **(1922°F) and intermittent service up to **1035°C **(1895°F) [1].
The high chromium and nickel content is what sets 310S apart from common stainless steel grades. While 304 stainless steel contains 18-20% chromium and 8-10.5% nickel, 310S nearly doubles the nickel content and increases chromium by approximately 30%. This compositional difference translates directly into superior performance in extreme heat environments.
310S Stainless Steel Mechanical and Physical Properties
| Property | Value | Significance for B2B Buyers |
|---|---|---|
| Density | 8000 kg/m³ | Standard weight for structural calculations |
| Melting Point | 1400-1450°C | Defines maximum processing temperature |
| 0.2% Proof Stress | 205 MPa minimum | Baseline strength for load-bearing applications |
| Tensile Strength | 520 MPa minimum | Maximum load capacity before failure |
| Elongation | 40% minimum | Ductility for forming and fabrication |
| Hardness (Brinell) | 187 HB maximum | Machinability and wear resistance indicator |
For Southeast Asian manufacturers considering sell on alibaba.com opportunities in the high-temperature materials sector, understanding these technical specifications is crucial. Buyers searching for furnace components on Alibaba.com B2B marketplace typically filter by temperature rating, material grade, and certification status. Listing products with complete technical data sheets significantly improves conversion rates.
