| Stainless Steel | Alloy Steel | Carbon Steel |
| Tool Steel | Duplex | Pressure Vessel Steel |
| Cast Iron | Maraging Steel | Chrome-moly Steel |
| Special-Purpose Steel |
| American Utility Metals | Assab Steels | ATI Allegheny Ludlum |
| Carlson | Dura-Bar | Goodfellow |
| Groupe Arcelor | Kennametal Stellite | Kinetics, Inc. |
| MetalTek | Pyrotek, Inc. | Resistalloy International Limited |