| Precipitation Hardening Stainless | T 300 Series Stainless Steel | T 400 Series Stainless Steel |
| Cast Stainless Steel | T 600 Series Stainless Steel | T S10000 Series Stainless Steel |
| AK Steel | Ametek | ATI Allvac |
| Carlson | Crucible Steel | Eagle Brass Company |
| Latrobe Steel | Outokumpu | Resistalloy International Limited |
| Schmolz + Bickenbach (Swiss Steel International) | Wingate Alloys |