| GPGupta Permold | Pittsburgh | PA | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| HIHofmann Ind Inc/sinking Spring | Sinking Spring | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| LALaurel Aluminum Casting CO | Glassport | PA | Primary Metal Manufacturing331521 | 1-19 | ◐ LIKELY ACTIVE |
| LFLincoln Foundry Inc/erie | Erie | PA | Primary Metal Manufacturing331492 | 20-99 | ◐ LIKELY ACTIVE |
| RMReed Mfg/erie | Erie | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| AIAccellent Inc/collegeville Microcoax | Collegeville | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| ACAlcoa Commercial Windows LLC (dba Traco) | Cranberry Township | PA | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| ALAllegheny Ludlum Latrobe Plant | Latrobe | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ALAllegheny Ludlum LLC | Brackenridge | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| APAlleima Precision Tube LLC | Scottdale | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| ASAmerican Sintered Technologies INC | Emporium | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| APArcelormittal Plate LLC - Coatesville Facility | Coatesville | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| AUArconic US LLC | Lancaster | PA | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| BPBluescope Prefab Bldg Mfg Annville | Annville | PA | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| BFBoyertown Foundry Company | New Berlinville | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| BABraeburn Alloy Steel Rolling Mill Fac | Lower Burrell | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
Bridesburg Foundry Co/whitehall | Whitehall | PA | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| BLBrightsmith Llc/falls Twp | Morrisville | PA | Primary Metal Manufacturing331512 | — | ◐ LIKELY ACTIVE |
| CCChemalloy CO Conshohocken Fac | Conshohocken | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| CCCleveland Cliffs Steel Corp/ Butler Works | Butler | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| CPCoilplus Pennsylvania | Philadelphia | PA | Primary Metal Manufacturing331111 | 20-99 | ◐ LIKELY ACTIVE |
| CIConnex, INC. | Fairview | PA | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| CSCronimet Specialty Metals USA INC | Greenville | PA | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| DADavis Alloys Manufacturing, LLC | Sharpsville | PA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
Dayton Superior CORP | Tremont | PA | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| DIDonsco Inc/mt Joy | Mount Joy | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| EPEast Penn Kutztown Battery Plt | Kutztown | PA | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| FIFleetwood Industries INC. | Leesport | PA | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |
Global Advanced Metals Usa/boyertown | Boyertown | PA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| GSGoodhart Sons INC. | Lancaster | PA | Primary Metal Manufacturing331111 | 100-499 | ◐ LIKELY ACTIVE |
| HMHamburg Mfg Inc/hamburg Plow Works Plt | Hamburg | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
Herr & Sacco, INC. | Manheim | PA | Primary Metal Manufacturing331410 | 20-99 | ◐ LIKELY ACTIVE |
| HFHodge Foundry | Greenville | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| HAHp Acquisition Corp/e Hempfield | Lancaster | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| HEHydro Extrusion Usa, LLC | Mountain Top | PA | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| IKIpsco Koppel Tubular CORP Ambridge | Ambridge | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| JMJohnson Matthey Inc/west Whiteland | West Chester | PA | Primary Metal Manufacturing331491 | 100-499 | ◐ LIKELY ACTIVE |
| JAJudson a Smith Co/boyertown | Boyertown | PA | Primary Metal Manufacturing331400 | — | ◐ LIKELY ACTIVE |
| JWJ Walter Miller Co/lancaster | Lancaster | PA | Primary Metal Manufacturing331525 | — | ◐ LIKELY ACTIVE |
| KMKalas Manufacturing INC Lancaster Plant | Lancaster | PA | Primary Metal Manufacturing331420 | 100-499 | ◐ LIKELY ACTIVE |
| KIKennametal INC | Bedford | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| KFKeystone Foundry Div | Erie | PA | Primary Metal Manufacturing331529 | — | ◐ LIKELY ACTIVE |
| KRKymera Reading Alloys Inc/robesonia | Robesonia | PA | Primary Metal Manufacturing331112 | 100-499 | ◐ LIKELY ACTIVE |
| LSLatrobe Spec Steel Sandycreek Svc Ctr | Franklin | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| LSLehigh Specialty Melting INC | Latrobe | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| MBMaterion Brush INC | Shoemakersville | PA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| MMMm Metals USA LLC | Fairless Hills | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| MJMount Joy Wire Corporation | Mount Joy | PA | Primary Metal Manufacturing331222 | 100-499 | ◐ LIKELY ACTIVE |
| MFMulti Flex Plating Co/collingdale | Collingdale | PA | Primary Metal Manufacturing331410 | 1-19 | ◐ LIKELY ACTIVE |
| PPPa Precision Cast Pa/lebanon City Plt | Lebanon | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |