| AISI 4000 Series Steel | Low Alloy Steel | Medium Alloy Steel |
| AISI 8000 Series Steel | AISI 5000 Series Steel | AISI 6000 Series Steel |
| AISI 9000 Series Steel |
| AK Steel | ArcelorMittal | ATI Allvac |
| Bohler-Uddeholm | Carpenter Technology Corporation (Cartech) | FloMet LLC |
| MetalTek | Niagara LaSalle | Osprey Metals, Ltd. |
| QuesTek® Innovations | SSAB Tunnplat AB | ThyssenKrupp |