| TFTrumbull Foundry & Alloy | Niles | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AGAction Group INC | Blacklick | OH | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| AWAhresty Wilmington CORP | Wilmington | OH | Primary Metal Manufacturing331315 | 500+ | ◐ LIKELY ACTIVE |
| AFAkron Foundry Company | Akron | OH | Primary Metal Manufacturing331524 | 500+ | ◐ LIKELY ACTIVE |
| ARAllegheny Rail Products/ Lb Foster CO | Niles | OH | Primary Metal Manufacturing331111 | — | ◐ LIKELY ACTIVE |
American Wire and Cable Co | Olmsted Twp | OH | Primary Metal Manufacturing331420 | 20-99 | ◐ LIKELY ACTIVE |
| AVAmg Vanadium LLC | Zanesville | OH | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ARAmsted Rail | Groveport | OH | Primary Metal Manufacturing331513 | 100-499 | ◐ LIKELY ACTIVE |
| AAApex Aluminum Die Casting Co., INC. | Piqua | OH | Primary Metal Manufacturing331521 | 20-99 | ◐ LIKELY ACTIVE |
| BEBrothers Equipment, INC. | Cleveland | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| BSByer Steel | Cincinnati | OH | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| CMCarter Machine Co. Inc. | Galion | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| CMCircle Machine Rolls, INC. | Sebring | OH | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| CSCleveland-Cliffs Steel Research & Innovation Center | Middletown | OH | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| CECore-tech Enterprises, LLC | Mentor | OH | Primary Metal Manufacturing331492 | 20-99 | ◐ LIKELY ACTIVE |
| CSCoronado Steel CO | Youngstown | OH | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| CHCustom Hoists | Ashland | OH | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| FMFerroglobe Metallurgical | Waterford | OH | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| GAGeneral Aluminum LLC, Ravenna | Ravenna | OH | Primary Metal Manufacturing331523 | 100-499 | ◐ LIKELY ACTIVE |
| GDGeneral Die Casters, Inc. Peninsula | Peninsula | OH | Primary Metal Manufacturing331521 | 1-19 | ◐ LIKELY ACTIVE |
| GEGuardian Express INC | Wapakoneta | OH | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| HCHarbor Castings, INC. | Cuyahoga Falls | OH | Primary Metal Manufacturing331512 | 100-499 | ◐ LIKELY ACTIVE |
| HCHaydon Corporation- OH | Stow | OH | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| HMHill Mfg INC | Wauseon | OH | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| HCHTCI, Co. | New Carlisle | OH | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| IWIndustrial Welding & Engineering CO. | Lewis Center | OH | Primary Metal Manufacturing331512 | — | ◐ LIKELY ACTIVE |
| IMInternational Metal Hose Company | Bellevue | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| KMKing Model Company INC (1677011225) | Akron | OH | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| MIMagretech Incorporated | Bellevue | OH | Primary Metal Manufacturing331410 | 20-99 | ◐ LIKELY ACTIVE |
| MSMcdonald Steel CORP | Mc Donald | OH | Primary Metal Manufacturing331111 | — | ◐ LIKELY ACTIVE |
| MDMcwane Ductile | Coshocton | OH | Primary Metal Manufacturing331511 | 500+ | ◐ LIKELY ACTIVE |
| MMMidwest Manufacturing & Logistics LLC | Minster | OH | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| NINavarre Industries | Navarre | OH | Food Manufacturing311812 | 100-499 | ◐ LIKELY ACTIVE |
| PAPennex Aluminum Company - Leetonia | Leetonia | OH | Primary Metal Manufacturing331316 | 100-499 | ◐ LIKELY ACTIVE |
| PTProduction Tube Cutting | Dayton | OH | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| RAReserve Alloys LLC | Twinsburg | OH | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| SJSaint Joseph Mint | Mount Vernon | OH | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |
| SISemco INC | Marion | OH | Primary Metal Manufacturing331525 | — | ◐ LIKELY ACTIVE |
| SMSpectrum Machine INC | Ravenna | OH | Primary Metal Manufacturing331421 | — | ◐ LIKELY ACTIVE |
| SEStar Extruded Shapes | Canfield | OH | Primary Metal Manufacturing331314 | 100-499 | ◐ LIKELY ACTIVE |
| TCThe Chris Erhart Foundry and Machine Co. | Cincinnati | OH | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| TITherm-o-link INC | Garrettsville | OH | Primary Metal Manufacturing331422 | — | ◐ LIKELY ACTIVE |
| TFTrumbull Foundry and Alloy Federal Street | Niles | OH | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| VIVwm-republic, INC. | Cleveland | OH | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| WCWorthington-Samuel Coil Processing Cleveland West | Cleveland | OH | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| WCWorthington-Samuel Coil Processing Twinsburg | Twinsburg | OH | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| CSCooper Standard Automotive INC | New Lexington | OH | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| ILIronunits LLC - Toledo Hbi (0448011992) | Toledo | OH | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| MPMcm Precision Castings INC | Weston | OH | Primary Metal Manufacturing331528 | — | ◐ LIKELY ACTIVE |
| MBMorris Bean & CO * | Yellow Springs | OH | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |