| 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 |
| Assab Steels | Bisalloy Steels | Crucible Steel |
| EDRO | FloMet LLC | Kinetics, Inc. |
| MetalTek | PSM Industries | QuesTek® Innovations |
| SSAB Tunnplat AB | The NanoSteel® Company | Universal Wire Works |