| 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 | Assab Steels | ATI Allvac |
| Bisalloy Steels | EDRO | Groupe Arcelor |
| Osprey Metals, Ltd. | PSM Industries | The NanoSteel® Company |
| ThyssenKrupp | Universal Wire Works |