| Medium Carbon Steel | AISI 1000 Series Steel | Low Carbon Steel |
| High Carbon Steel |
| AK Steel | Assab Steels | ATI Allegheny Ludlum |
| Crucible Steel | Eagle Brass Company | Groupe Arcelor |
| Hardwire, LLC | Latrobe Steel | Niagara LaSalle |
| Pacific Sintered Materials | ThyssenKrupp | Universal Wire Works |