| NINF&M International, Inc. | Monaca | PA | Primary Metal Manufacturing331491 | 1-19 | ◐ LIKELY ACTIVE |
| NINN, Inc. Palmer | Palmer | MA | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| NANORTH AMERICAN STAINLESS-Minooka | Minooka | IL | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| NANORTH AMERICAN STAINLESS-Pendergrass | Pendergrass | GA | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| NANORTH AMERICAN STAINLESS-Wrightsville | Whrightsville | PA | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| NSNucor Skyline Cartersville | Cartersville | GA | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| OOhio | North Jackson | OH | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| OHOPTA-Burns Harbor | Burns Harbor | IN | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| OTOPTA-Edgar Thomson | Braddock | PA | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| OPOptiMIM Portland South | Wilsonville | OR | Primary Metal Manufacturing331523 | 1-19 | ◐ LIKELY ACTIVE |
| PAPermalok A Northwest Pipe Company | St. Louis, | MO | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| PFPerryman Frackville Operations | Frackville | PA | Primary Metal Manufacturing331491 | 1-19 | ◐ LIKELY ACTIVE |
| PGPhoenix Global, LLC-Cool Springs | Mingo Junction | OH | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| PGPhoenix Global, LLC-Marion | Marion | OH | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| PGPhoenix Global, LLC-Riverdale | Riverdale | IL | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| PGPhoenix Global, LLC-Roanoke | Roanoke | VA | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| PGPhoenix Global, LLC-Wilton | Wilton | IA | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| PFPier Foundry & Pattern Shop, Inc. - Shipping | Saint Paul | MN | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| PFPier Foundry & Pattern Shop, Inc. - Shipping | St. Paul | MN | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| PPortland | Portland | OR | Food Manufacturing311412 | 1-19 | ◐ LIKELY ACTIVE |
| QAQ Aluminum LLC | New Berlin | PA | Primary Metal Manufacturing331524 | 1-19 | ◐ LIKELY ACTIVE |
| RRResources Recycling Management LLC | Fairless Hills | PA | Primary Metal Manufacturing331492 | 1-19 | ◐ LIKELY ACTIVE |
| RORochester Operations | Rochester | PA | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| RMRome Madison Facility | Rome | NY | Primary Metal Manufacturing331420 | 1-19 | ◐ LIKELY ACTIVE |
| SSSabel Steel Service, Inc- Fabrications | Montgomery | AL | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| SSSaber Steel, LLC | Tulsa | OK | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| SESouth East Tube | Cadiz | KY | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| SPSpruill Products, INC. | Atlanta | GA | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| SHSSAB Houston Sales of SSAB Texas Inc. | Houston | TX | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| SRSSAB R & D of SSAB Iowa Inc. | Muscatine | IA | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| SSSteiger Steel & Fabricating | La Crosse | WI | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
Stephens Pipe & Steel LLC DECATUR | Dunnville | KY | Primary Metal Manufacturing331491 | 1-19 | ◐ LIKELY ACTIVE |
| SSSummit Steel, INC. | Kemp | TX | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| TCTNTCNC Carlin | Carlin | NV | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| TFTrumbull Foundry and Alloy Henry Street | Niles | OH | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| UCUnion Casting Industries T/A Industrial Ferguson Foundry | Union | NJ | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| USUnited Scrap | Cicero | IL | Primary Metal Manufacturing331491 | 1-19 | ◐ LIKELY ACTIVE |
| UDUSMe DBA BLH Computers | Springfield | IL | Primary Metal Manufacturing331491 | 1-19 | ◐ LIKELY ACTIVE |
| VIValmet Inc Waukesha Wilmont | Waukesha | WI | Primary Metal Manufacturing331513 | 1-19 | ◐ LIKELY ACTIVE |
| WSWelding Shops | Grindstone | PA | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| WFWilliamstown Facility | Williamstown | NY | Primary Metal Manufacturing331420 | 1-19 | ◐ LIKELY ACTIVE |