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Grade 310 is a medium carbon austenitic stainless steel, for high temperature applications such as furnace parts and heat treatment equipment. It is used at temperatures up to 1150°C in continuous service, and 1035°C in intermittent service. Grade 310S is a low carbon version of grade 310.
Chemcial Composition of Grade 310/310S Stainless Steel,
The chemical composition of grade 310 and grade 310S stainless steel are summarised in the following table. Table 1. Chemical composition % of grade 310 and 310S stainless steel
| Chemical Composition | 310 | 310S |
| Carbon | 0.25 max | 0.08 max |
| Manganese | 2.00 max | 2.00 max |
| Silicon | 1.50 max | 1.50 max |
| Phosphorus | 0.045 max | 0.045 max |
| Sulphur | 0.030 max | 0.030 max |
| Chromium | 24.00 - 26.00 | 24.00 - 26.00 |
| Nickel | 19.00 - 22.00 | 19.00 - 22.00 |
Mechanical Properties of Grade 310/310S Stainless Steel
The mechanical properties of grade 310 and grade 310S stainless steel are summarised in the following table. Table 2. Mechanical properties of of grade 310/310S stainless steel
| Mechanical Properties | 310/ 310S |
| Grade 0.2 % Proof Stress MPa (min) | 205 |
| Tensile Strength MPa (min) | 520 |
| Elongation % (min) | 40 |
| Hardness (HV) (max) | 225 |
