Perryman CO | Houston | 500+ | ● ACTIVE |
| PMPrecision Marshall Steel | Washington | 20–99 | ● ACTIVE |
| PCPrysmian Cables & Sys USA Llc/williamsport Plt | Williamsport | 100–499 | ● ACTIVE |
| PLPyromet LLC | Aston | 20–99 | ● ACTIVE |
| RAReading Alloys, LLC | Robesonia | 100–499 | ● ACTIVE |
Scicast International Incorporated | Bechtelsville | 20–99 | ● ACTIVE |
| SCShalmet CORP | Orwigsburg | 100–499 | ● ACTIVE |
| SSStandard Steel-burnham Plant | Burnham | 500+ | ● ACTIVE |
St Products LLC | Duncansville | 100–499 | ● ACTIVE |
Superior Tube Company, INC. | Collegeville | 100–499 | ● ACTIVE |
| TTTech Tube, INC. | King of Prussia | 100–499 | ● ACTIVE |
| TEThe Electric Materials Co/north East | North East | 100–499 | ● ACTIVE |
Titan International, INC. | Pottstown | 20–99 | ● ACTIVE |
United Metal Fabricators, INC. | Johnstown | 20–99 | ● ACTIVE |
| USUnited States Steel Corporation | Pittsburgh | — | ● ACTIVE |
U.s. Bronze Foundry & Machine, INC | Meadville | 20–99 | ● ACTIVE |
| WIWebco Ind Inc/oil City Tube Div | Oil City | 100–499 | ● ACTIVE |
| WTWheatland Tube Company - Council | Wheatland | 100–499 | ● ACTIVE |
Wire and Cable Specialties, INC. | Coatesville | — | ● ACTIVE |
Wirerope Works, INC. | Williamsport | 100–499 | ● ACTIVE |
Alleima USA LLC | South Abington Township | 500+ | ● ACTIVE |
| AIAmeridrives International LLC | Erie | 100–499 | ● ACTIVE |
Arconic Corporation | Pittsburgh | 500+ | ● ACTIVE |
| CPCleveland-cliffs Plate LLC | Coatesville | 500+ | ● ACTIVE |
Grant Manufacturing & Alloying INC | Birdsboro | — | ● ACTIVE |
Hegedus Aluminum Industries, INC | Oil City | 20–99 | ● ACTIVE |
Hrp Metals, INC. | Burgettstown | 1–19 | ● ACTIVE |
Luxfer Magtech INC | Saxonburg | — | ● ACTIVE |
Metalwerks, INC. | Aliquippa | — | ● ACTIVE |
| MRMountain Ridge Metals INC | Millersburg | 100–499 | ● ACTIVE |
Prl Industries INC | Lebanon | 100–499 | ● ACTIVE |
Techspec, INC. | Derry | 20–99 | ● ACTIVE |
Americas Rare Earth CORP | Pittston | — | ● ACTIVE |
Amg Critical Materials CORP. | Wayne | — | ● ACTIVE |
Ati Specialty Alloys & Components, LLC | Pittsburgh | — | ● ACTIVE |
Ati Specialty Materials LLC | Pittsburgh | — | ● ACTIVE |
Bolton Metal Products CO. INC. | State College | — | ● ACTIVE |
Carpenter Technology Corporation | Philadelphia | — | ● ACTIVE |
Carter Alloys Company | Bryn Mawr | — | ● ACTIVE |
Cavalier Steel & Fence CO | Darby | — | ● ACTIVE |
Evolution Metals and Mining Technologies, LLC | Haverford | — | ● ACTIVE |
Ice Station Zebra, LLC | Canonsburg | — | ● ACTIVE |
| JAJudson A. Smith Company | Boyertwon | 20–99 | ● ACTIVE |
Lifezone Recycling US LLC | Fairview | — | ● ACTIVE |
Pennsylvania Precision Cast Parts INC | Lebanon | — | ● ACTIVE |
Pro Tube INC | Zullinger | — | ● ACTIVE |
| STSalem Tube, Inc.. | Greenville | 100–499 | ● ACTIVE |
Sophisticated Alloys INC | Butler | — | ● ACTIVE |
Ssab, INC. | Moon Township | — | ● ACTIVE |
Tmp Metals Group, LTD. | Pittsburgh | — | ● ACTIVE |