| ACAmerican Carbonyl, LLC | Redstone Arsenal | AL | Primary Metal Manufacturing331491 | 1-19 | ◐ LIKELY ACTIVE |
| ASAmerican Sintered Technologies INC | Emporium | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ATAmerican Tube & Conduit | Phoenix | AZ | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| AZAmerican Zinc Recycling CORP | Barnwell | SC | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| ASAmetek Specialty Metal Product | Wallingford | CT | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| AAAmg Aluminum North America LLC | Robards | KY | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |
| ARAmg Resources CORP | Baltimore | MD | Chemical Manufacturing325131 | — | ◐ LIKELY ACTIVE |
| AVAmg Vanadium LLC | Zanesville | OH | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ACAm/ns Calvert LLC | Calvert | AL | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ASAmphenol Spectra Strip | Hamden | CT | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| ARAmsted Rail Company, INC | Keokuk | IA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| AEAppleton Electric LLC | South Milwaukee | WI | Primary Metal Manufacturing331510 | — | ◐ LIKELY ACTIVE |
| ALArcelormittal LLC - Burns Harbor Facility | Burns Harbor | IN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| APArcelormittal Plate LLC - Coatesville Facility | Coatesville | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| APArcelormittal Plate LLC Conshohocken Facility | Conshohocken | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ARArcelormittal Riverdale, INC. - Riverdale Facility | Riverdale | IL | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| AWArcelormittal Weirton | Weirton | WV | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| AMArmor Metal Group | Mason | OH | Primary Metal Manufacturing331521 | 100-499 | ◐ LIKELY ACTIVE |
| ALAsarco LLC Hayden Operations | Hayden | AZ | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| ACAssured Castings CORP | Rogersville | TN | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| ACAstro Coatings INC | Struthers | OH | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| AMAti Millersburg | Albany | OR | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| ASAti Specialty Materials, Monroe Plant | Monroe | NC | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |
| AIAugusta Iron & Steel Works INC | Augusta | GA | Primary Metal Manufacturing331111 | 20-99 | ◐ LIKELY ACTIVE |
| AIAvestapolarit INC | New Castle | IN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| APAxis Pipe and Tube, INC. | Bryan | TX | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| BMBear Metallurgical Mfg | Butler | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| BZBefesa Zinc Metal, LLC | Mooresboro | NC | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| BCBekaert Corporation (0285010331) | Orrville | OH | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| BWBelden Wire & Cable Company | Richmond | IN | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| BMBelmont Metals, INC. | Brooklyn | NY | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| BWBeneke Wire CO | Louisville | KY | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| BSBenteler Steel/tube Manufacturing CORP | Shreveport | LA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| BRBig River Steel LLC | Osceola | AR | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| BDBlue Diamond Steel Casting,inc. | Pigeon | MI | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| BPBlue Patriot Fab | Omaha | NE | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| BPBluescope Prefab Bldg Mfg Annville | Annville | PA | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
Blue Whale Materials LLC | Bartlesville | OK | Textile Product Mills314999 | 20-99 | ◐ LIKELY ACTIVE |
| BUBohler Uddeholm Specialty Metals INC | South Boston | VA | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| BBBorusan Berg Pipe | Panama City | FL | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| BFBoyertown Foundry Company | New Berlinville | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| BBBradford Built | Washington | KS | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
Bridesburg Foundry Co/whitehall | Whitehall | PA | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| BLBrightsmith Llc/falls Twp | Morrisville | PA | Primary Metal Manufacturing331512 | — | ◐ LIKELY ACTIVE |
| BEBrowning Enterprise, INC. | Attalla | AL | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
Bunting Bearings CORP | Delta | OH | Primary Metal Manufacturing331111 | — | ◐ LIKELY ACTIVE |
| CCCadillac Casting, INC (b2178) | Cadillac | MI | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| CDCalifornia Die Casting INC | Ontario | CA | Primary Metal Manufacturing331521 | 20-99 | ◐ LIKELY ACTIVE |
| CSCalifornia Steel Industries INC | Fontana | CA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| CLCambridge Lee Plants 2, 3, 4 | Reading | PA | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |