| 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 | Bisalloy Steels | Carpenter Technology Corporation (Cartech) |
| FloMet LLC | Groupe Arcelor | MetalTek |
| Niagara LaSalle | PSM Industries | Trimay® Wear Plate Ltd |
| Universal Wire Works | Wingate Alloys |