| Stainless Steel | Alloy Steel | Carbon Steel |
| Tool Steel | Duplex | Pressure Vessel Steel |
| Cast Iron | Maraging Steel | Chrome-moly Steel |
| Special-Purpose Steel |
| 3M | American Elements | American Utility Metals |
| Ametek | Assab Steels | ATI Allegheny Ludlum |
| ATI Allvac | China Tungsten | Eagle Brass Company |
| Pyrotek, Inc. | ThyssenKrupp | Trimay® Wear Plate Ltd |