| 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 |
| Bohler-Uddeholm | Carpenter Technology Corporation (Cartech) | Crucible Steel |
| EDRO | MetalTek | QuesTek® Innovations |
| Trimay® Wear Plate Ltd | Universal Wire Works |