321 Stainless Steel Cryogenic Performance

1. What is 321's minimum cryogenic temperature? It retains toughness down to -270°C (liquid helium temperature).

2. Does 321 become brittle at low temperatures? No, its austenitic structure ensures ductility in cryogenic environments.

3. Can 321 be used in LNG equipment? Yes, for components requiring both cryogenic and high-temperature resistance.

4. How does cryogenic exposure affect 321's properties? No significant degradation; it retains strength and ductility.

5. Is 321 better than 304 at cryogenic temperatures? Both perform well, but 321 has higher weld stability.