| 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 | Bohler-Uddeholm | Crucible Steel |
| FloMet LLC | Groupe Arcelor | Kinetics, Inc. |
| Niagara LaSalle | Osprey Metals, Ltd. | Pacific Sintered Materials |
| Trimay® Wear Plate Ltd | Universal Wire Works |