| 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 |
| AK Steel | ArcelorMittal | Bisalloy Steels |
| Crucible Steel | EDRO | FloMet LLC |
| Latrobe Steel | QuesTek® Innovations | The NanoSteel® Company |
| ThyssenKrupp | Universal Wire Works |