| Stainless Steel | Alloy Steel | Carbon Steel |
| Tool Steel | Duplex | Pressure Vessel Steel |
| Cast Iron | Maraging Steel | Chrome-moly Steel |
| Special-Purpose Steel |
| American Elements | ATI Allvac | Bohler-Uddeholm |
| Garlock Rubber Technologies | High Performance Alloys, Inc | Meehanite |
| Niagara LaSalle | Pacific Sintered Materials | Pyrotek, Inc. |
| ThyssenKrupp | United Cast Bar |