| 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 | ATI Allvac | Bisalloy Steels |
| Crucible Steel | EDRO | Groupe Arcelor |
| MetalTek | Osprey Metals, Ltd. | QuesTek® Innovations |
| SSAB Tunnplat AB | Universal Wire Works | Wingate Alloys |