| Stainless Steel | Alloy Steel | Carbon Steel |
| Tool Steel | Duplex | Pressure Vessel Steel |
| Cast Iron | Maraging Steel | Chrome-moly Steel |
| Special-Purpose Steel |
| American Elements | American Utility Metals | ATI Allvac |
| EDRO | FloMet LLC | Goodfellow |
| Groupe Arcelor | Hardwire, LLC | Misumi |
| Niagara LaSalle | P & P Technology | ThyssenKrupp |