| Medium Carbon Steel | AISI 1000 Series Steel | Low Carbon Steel |
| High Carbon Steel |
| AK Steel | Assab Steels | ATI Allvac |
| Bisalloy Steels | Carpenter Technology Corporation (Cartech) | Crucible Steel |
| Eagle Brass Company | EDRO | Groupe Arcelor |
| Hardwire, LLC | Latrobe Steel | Niagara LaSalle |