310 Stainless Steel Welding Techniques & Weld Consumables

1. What weld consumables are suitable for 310 stainless steel? ER310 for TIG/MIG welding and E310-16 for SMAW.

2. Do I need to preheat 310 before welding? Preheating to 200-300°C is recommended for thick plates to prevent cracking.

3. Why is post-weld annealing required for 310? To dissolve carbide precipitates and avoid intergranular corrosion caused by sensitization.

4. Can 310 be welded to 304 stainless steel? Yes, but use ER310 consumables to ensure joint strength and corrosion resistance.

5. What is the optimal post-weld annealing temperature for 310? 1050-1150°C followed by rapid cooling (water or air quenching).