| 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 | Bohler-Uddeholm | Carpenter Technology Corporation (Cartech) |
| EDRO | Kinetics, Inc. | MetalTek |
| Osprey Metals, Ltd. | SSAB Tunnplat AB | The NanoSteel® Company |
| ThyssenKrupp | Universal Wire Works |