| SWSteel Warehouse of Illinois | Chicago | IL | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| TATrialco Aluminum, LLC | Chicago Heights | IL | Primary Metal Manufacturing331314 | 20-99 | ◐ LIKELY ACTIVE |
| TGTufts Grinding, Inc. | South Chicago Heights | IL | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| TMTw Metals, INC. | Carol Stream | IL | Primary Metal Manufacturing331210 | — | ◐ 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 |
| VNVoestalpine Nortrak | Decatur | IL | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| WSWarren Sand CO of Illinois | Springfield | IL | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| WWheeling | Wheeling | IL | Primary Metal Manufacturing331315 | 100-499 | ◐ LIKELY ACTIVE |
| WTWieland Thermal Solutions, Inc. | Wheeling | IL | Primary Metal Manufacturing331420 | 100-499 | ◐ LIKELY ACTIVE |
| ZZekelman | Rochelle | IL | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| KSKrueger Steel & Wire, INC. | Elmhurst | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| PCPneu-fast CO the | Evanston | IL | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| ACAcademy Corporation | Palatine | IL | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| AGAdvance Grinding Services, INC. | La Grange | IL | Primary Metal Manufacturing331421 | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum, LLC | Bridgeview | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| AMAllied Metal CO | Chicago | IL | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| ACAluminum Castings CORP | Galesburg | IL | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| ASAmazon.com Svcs LLC | Chicago | IL | Primary Metal Manufacturing331000 | — | ◇ UNVERIFIED |
| ARAmerican Rotors, INC. | Gurnee | IL | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| ACAnderson Casting Co., INC. | Chicago | IL | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| ATArcher Tinning and Re-tinning | Chicago | IL | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| ADArconic Danville Operations | Danville | IL | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
 Arnold Magnetic Technologies | Marengo | IL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| BBB & B Metals | Cambridge | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| BSBending Specialist | Bensenville | IL | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| BIBerkshire Investments LLC Dba Chicago Extruded Metals Company | Cicero | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| BSBirmingham Steel CORP | Bourbonnais | IL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| BFBrumund Foundry INC | Chicago | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| CCCai Custom Alloys, INC. | Belvidere | IL | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| CPCambridge Pattern Works | Cambridge | IL | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| CICaterpillar INC. | Mapleton | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| CSCentral Steel & Wire | University Park | IL | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| CCCentury Casting Corporation | Belleville | IL | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| CCCentury Castings Corporation | Swansea | IL | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| CSCharter Steel Trading | Chicago | IL | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| CHChicago Heights Brass Foundry, INC. | Chicago Heights | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| CVChicago Vacuum Castings CORP | Chicago | IL | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| CWChicago White Metal | Bensenville | IL | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| CSCi Starnes Products CO | Edwardsville | IL | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| CSC&j Sales | Chatham | IL | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| CSClingan Steel, INC. | Des Plaines | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| CFCmi Frank S Ryan Memorial | Des Plaines | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| CSCobin Salvage Yard INC | Dowell | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| CCColeman Cable INC | North Chicago | IL | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| CMCompeer Metals, INC. | Algonquin | IL | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| CMContinental Metals INC | Lasalle | IL | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| CCCopperweld Chicago Division | Chicago | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| CMCosmos Manufacturing, INC. | South Chicago Heights | IL | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| CCCountry Cast Products INC | Galena | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
