| Medium Carbon Steel | AISI 1000 Series Steel | Low Carbon Steel |
| High Carbon Steel |
| AK Steel | ATI Allvac | Carpenter Technology Corporation (Cartech) |
| EDRO | Latrobe Steel | Osprey Metals, Ltd. |
| PSM Industries | SSAB Tunnplat AB | ThyssenKrupp |
| Universal Wire Works | Wingate Alloys |