310 Stainless Steel Heat Treatment Processes

1. What is the purpose of solution annealing for 310? To dissolve chromium carbides and restore corrosion resistance and ductility.

2. What is the optimal temperature for solution annealing? 1050-1150℃.

3. Why is rapid cooling necessary after annealing? To prevent carbide re-precipitation and maintain the austenitic structure.

4. Can 310 be hardened by quenching? No, it is an austenitic stainless steel and cannot be hardened by heat treatment, only by cold working.

5. When is stress relief treatment needed for 310? After cold working with deformation over 15% to reduce residual stresses.