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