| Medium Carbon Steel | AISI 1000 Series Steel | Low Carbon Steel |
| High Carbon Steel |
| ATI Allvac | Carpenter Technology Corporation (Cartech) | EDRO |
| Groupe Arcelor | Hardwire, LLC | Latrobe Steel |
| Niagara LaSalle | Pacific Sintered Materials | SSAB Tunnplat AB |
| ThyssenKrupp | Universal Wire Works |