| EQEllwood Quality Steels Company | New Castle | PA | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| BSBlair Strip Steel Company | New Castle | PA | Primary Metal Manufacturing331221 | 20-99 | ▲ REPORTED CLOSED |
| GLGrede LLC | New Castle | IN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| AIAvestapolarit INC | New Castle | IN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ATAmg Titanium Llc/551 Northgate Cir | New Castle | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| GSGardner Steel Corporation | New Castle | PA | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| KIKennametal Isa | New Castle | PA | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| ALAllegheny Ludlum LLC | New Castle | IN | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| NCNew Castle Foundry/new Castle | New Castle | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| NHNCSP Holdco, LLC | New Castle | IN | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
Superior Forge & Steel New Castle | New Castle | PA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| ESEllwood Specialty Metals Company | New Castle | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| ATAmg Titanium 315 Green Ridge Rd Fac | New Castle | PA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| BBBlack Briar Investments, LLC | New Castle | DE | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |