| SASpectro Alloys CORP | Rosemount | MN | Primary Metal Manufacturing331314 | 100-499 | ● ACTIVE |
Spi Mobile Pulley Works, LLC | Mobile | AL | Primary Metal Manufacturing331110 | 20-99 | ● ACTIVE |
Spuncast INC | Watertown | WI | Primary Metal Manufacturing331511 | 100-499 | ● ACTIVE |
Ssab Alabama INC | Axis | AL | Primary Metal Manufacturing331110 | — | ● ACTIVE |
Ssab Enterprises LLC | Mobile | AL | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Ssab Iowa INC | Muscatine | IA | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| SStadco | Los Angeles | CA | Primary Metal Manufacturing331511 | 20-99 | ● ACTIVE |
| SSStahl Specialty Co-warrensburg Plant | Warrensburg | MO | Primary Metal Manufacturing331521 | 20-99 | ● ACTIVE |
Stainless Foundry & Engineering INC | Milwaukee | WI | Primary Metal Manufacturing331512 | 100-499 | ● ACTIVE |
| SSStandard Steel-burnham Plant | Burnham | PA | Primary Metal Manufacturing331110 | 500+ | ● ACTIVE |
| SMStar Manufacturing INC | Lexington | KY | Primary Metal Manufacturing331221 | 100-499 | ● ACTIVE |
| SMState Metal Industries INC | Camden | NJ | Primary Metal Manufacturing331314 | 20-99 | ● ACTIVE |
| SDSteel Dust Recycling LLC | Millport | AL | Primary Metal Manufacturing331410 | 100-499 | ● ACTIVE |
| SDSteel Dynamics Heartland | Terre Haute | IN | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Steel Edge, INC | Las Vegas | NV | Primary Metal Manufacturing331210 | — | ● ACTIVE |
Steel Forgings, INC. | Shreveport | LA | Primary Metal Manufacturing331210 | 20-99 | ● ACTIVE |
| SISteelscape INC | Kalama | WA | Primary Metal Manufacturing331111 | 100-499 | ● ACTIVE |
Steeltech, LLC | Grand Rapids | MI | Primary Metal Manufacturing331513 | 20-99 | ● ACTIVE |
Stephens Pipe & Steel LLC | Russell Springs | KY | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
Sterling Metal Works LLC | Sterling Heights | MI | Primary Metal Manufacturing331523 | — | ● ACTIVE |
St Paul Brass Foundry CO | Saint Paul | MN | Primary Metal Manufacturing331522 | 1-19 | ● ACTIVE |
St Products LLC | Duncansville | PA | Primary Metal Manufacturing331420 | 100-499 | ● ACTIVE |
St. Regis Culvert, INC | Charlotte | MI | Primary Metal Manufacturing331210 | 1-19 | ● ACTIVE |
Strohecker INC | East Palestine | OH | Primary Metal Manufacturing331410 | 20-99 | ● ACTIVE |
| SBStupp Bridge Company | Bowling Green | KY | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| SBStupp Bros., INC. | Saint Louis | MO | Primary Metal Manufacturing331210 | 20-99 | ● ACTIVE |
| SMSulzer Metco (us) Troy | Troy | MI | Primary Metal Manufacturing331492 | 20-99 | ● ACTIVE |
Sunshine Minting INC | Henderson | NV | Primary Metal Manufacturing331491 | 100-499 | ● ACTIVE |
Supercon, Incorporated | Shrewsbury | MA | Primary Metal Manufacturing331222 | 20-99 | ● ACTIVE |
| SBSuperior Brass & Aluminum Casting CO | East Lansing | MI | Primary Metal Manufacturing331491 | 20-99 | ● ACTIVE |
Superior Extrusion, INC | Gwinn | MI | Primary Metal Manufacturing331315 | 100-499 | ● ACTIVE |
Superior Forge & Steel CORP | Lima | OH | Primary Metal Manufacturing331110 | — | ● ACTIVE |
Superior Tube Company, INC. | Collegeville | PA | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
Sycast, INC. | Hartford | CT | Primary Metal Manufacturing331524 | 1-19 | ● ACTIVE |
Tampa Brass and Aluminum Corporation. | Tampa | FL | Primary Metal Manufacturing331111 | 100-499 | ● ACTIVE |
| TSTaubensee Steel and Wire CO | Wheeling | IL | Primary Metal Manufacturing331222 | 100-499 | ● ACTIVE |
Taurus Fabrication, INC | Grass Valley | CA | Primary Metal Manufacturing331110 | 20-99 | ● ACTIVE |
| TFTaylor & Fenn CO | Windsor | CT | Primary Metal Manufacturing331511 | 20-99 | ● ACTIVE |
Taylor Forge Engineered Systems, INC. | Paola | KS | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
Team Industries Bagley | Bagley | MN | Primary Metal Manufacturing331521 | 100-499 | ● ACTIVE |
| TLTechni-cast LLC | South Gate | CA | Primary Metal Manufacturing331529 | 20-99 | ● ACTIVE |
| TTTech Tube, INC. | King of Prussia | PA | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
Tecomet INC. | Wilmington | MA | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Telcon LLC | Streetsboro | OH | Primary Metal Manufacturing331529 | 20-99 | ● ACTIVE |
| TLTemperform LLC | Novi | MI | Primary Metal Manufacturing331513 | 20-99 | ● ACTIVE |
| TATennessee Aluminum Processors INC | Mount Pleasant | TN | Primary Metal Manufacturing331314 | 20-99 | ● ACTIVE |
Terves, LLC | Euclid | OH | Primary Metal Manufacturing331529 | 20-99 | ● ACTIVE |
| THTexas Hydraulics | Temple | TX | Primary Metal Manufacturing331524 | 100-499 | ● ACTIVE |
The Carondelet Foundry Corporation | Pevely | MO | Primary Metal Manufacturing331513 | — | ● ACTIVE |
| TEThe Electric Materials Co/north East | North East | PA | Primary Metal Manufacturing331420 | 100-499 | ● ACTIVE |