| GDGm Defiance Casting Operations | Defiance | OH | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| GWGriffin Wheel Columbus Plant | Groveport | OH | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| HAHowmet Aerospace INC. - Cleveland Works | Cuyahoga Heights | OH | Primary Metal Manufacturing331523 | — | ◐ LIKELY ACTIVE |
| ISI. Schumann & CO | Oakwood Village | OH | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| MRMagretech-magnesium Refining Technology | Bellevue | OH | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| NCNovelis Corporation (0278080136) | Warren | OH | Primary Metal Manufacturing331315 | — | ◐ LIKELY ACTIVE |
| RAReal Alloy Specialty Products LLC | Elyria | OH | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| RTRmi Titanium CO LLC - Canton Ingot Operations | Canton | OH | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| SSSolon Specialty Wire CO | Solon | OH | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| SMSt. Marys Foundry INC. (0306010004) | Saint Marys | OH | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| WOWhemco - Ohio Foundry INC (0302020023) | Lima | OH | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| ADAdalet Division of Scott Fetzer | Cleveland | OH | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| AFAlbco Foundry and Machine, INC. | Lisbon | OH | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| ARAleris Rolled Products INC | Uhrichsville | OH | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| BMBull Moose Tube CO - Masury Plant | Masury | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| CSCharter Steel INC | Rising Sun | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| CMConcast Metal Products CO | Wakeman | OH | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| CHCsm Horvath Ledgebrook - Brost Foundry CO | Mansfield | OH | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| DMDatco Manufacturing LLC (0250110856) | Boardman | OH | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| FFFalcon Foundry CO | Lowellville | OH | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| FCFord Cleveland Casting Plant | Brookpark | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| FIFusion INC Plant No 2 | Willoughby | OH | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| GAGeneral Aluminum (1667070012) | Ravenna | OH | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| GAGeneral Aluminum Manufacturing CO | Conneaut | OH | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| GAGnw Aluminum INC | Alliance | OH | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| KSKosei St. Marys, CORP. | Saint Marys | OH | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| LHL & H Threaded Rods CORP | Dayton | OH | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| LCLiverpool Coil Processing | Valley City | OH | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| MMagnode | Trenton | OH | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| MMetaldyne | Twinsburg | OH | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| MRMetallic Resources INC | Twinsburg | OH | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| MIMetaltek International - Sandusky International Division | Sandusky | OH | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| OIOsco Industries, INC. New Boston Divisi (0773010180) | New Boston | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| OKO.s. Kelly Company (0812100276) | Springfield | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| PWPengg Wmc LLC | Bedford Heights | OH | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| QCQuaker City Castings (0215090009) | Salem | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| RCReliable Castings CORP | Sidney | OH | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| RCRock Creek Aluminum INC | Rock Creek | OH | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| SDSam Dong Ohio INC | Delaware | OH | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| SCSeville Centrifugal Bronze INC | Seville | OH | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
 Skyline Steel | Belpre | OH | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| TTTooling Technology | Fort Loramie | OH | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| VWVictory White Metal CO | Cleveland | OH | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| WTWheatland Tube - Warren, a Div. of Zekelman Industries (0278080757) | Warren | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WSWorthington Steel | Cuyahoga Heights | OH | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| YIYoder Industries INC | Dayton | OH | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| CSCast Specialties INC | Warrensville Heights | OH | Primary Metal Manufacturing331521 | 20-99 | ◐ LIKELY ACTIVE |
| AWAluminum Wheel Technologies INC | Ravenna | OH | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| MTMid-ohio Tubing LLC | Butler | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TFTiffin Foundry & Machine | Tiffin | OH | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
