| AISI 4000 Series Steel | Low Alloy Steel | Medium Alloy Steel |
| AISI 8000 Series Steel | AISI 5000 Series Steel | AISI 6000 Series Steel |
| AISI 9000 Series Steel |
| ArcelorMittal | Bisalloy Steels | Bohler-Uddeholm |
| Carpenter Technology Corporation (Cartech) | Groupe Arcelor | Latrobe Steel |
| MetalTek | Niagara LaSalle | PSM Industries |
| SSAB Tunnplat AB | ThyssenKrupp |