| 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 |
| Assab Steels | ATI Allvac | Bisalloy Steels |
| Crucible Steel | EDRO | FloMet LLC |
| Groupe Arcelor | Kinetics, Inc. | Osprey Metals, Ltd. |
| PSM Industries | QuesTek® Innovations | Universal Wire Works |