Super austenitic stainless steel valves have great resistance against pitting and crevice corrosion of chloride owe to its super austenitic stainless steel has high molybdenum content (>6%) and nitrogen additions. These steel features high corrosion resistance rivalling nickel-based alloy at a significant lower cost.
| Name | Castings grades | Forgings grades | Bars grades |
| 904L | 904L | A182 F904L | B649 N08904 |
| 254SMO | A351 CK3MCuN | A182 F44 | A276 S31254 |
| AL-6XN | A351 CN3MN | B462 N08367 | B688 N08367 |
| ALLOY 20 | A351 CN7M | B462 N08020 | B473 N08020 |