| Medium Carbon Steel | AISI 1000 Series Steel | Low Carbon Steel |
| High Carbon Steel |
| AK Steel | ATI Allegheny Ludlum | ATI Allvac |
| Crucible Steel | Eagle Brass Company | Latrobe Steel |
| Osprey Metals, Ltd. | Pacific Sintered Materials | PSM Industries |
| SSAB Tunnplat AB | Wingate Alloys |