Rathbone Precision Metals, INC | Palmer | MA | Primary Metal Manufacturing331221 | 20-99 | ● ACTIVE |
| RAReading Alloys, LLC | Robesonia | PA | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
| RAReal Alloy Recycling LLC | Morgantown | KY | Primary Metal Manufacturing331313 | 100-499 | ● ACTIVE |
| RAReal Alloy Recycling LLC | Loudon | TN | Primary Metal Manufacturing331313 | 20-99 | ● ACTIVE |
| RARec Advanced Silicon Materials LLC | Butte | MT | Chemical Manufacturing325180 | 100-499 | ● ACTIVE |
Regent Die & Tool Co, INC | Milwaukee | WI | Primary Metal Manufacturing331111 | 20-99 | ● ACTIVE |
| RIReo Industries, INC. | Hayden | ID | Primary Metal Manufacturing331524 | 20-99 | ● ACTIVE |
| RCRepublic Conduit | Louisville | KY | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
| RResonetics | New Hartford | NY | Primary Metal Manufacturing331410 | 20-99 | ● ACTIVE |
Riverdale Mills CORP | Northbridge | MA | Primary Metal Manufacturing331222 | 20-99 | ● ACTIVE |
R. Kern Engineering & Manufacturing CORP. | Chino | CA | Primary Metal Manufacturing331513 | 20-99 | ● ACTIVE |
| RIRlm Industries INC | Oxford | MI | Primary Metal Manufacturing331512 | 20-99 | ● ACTIVE |
| RTRmi Titanium CO (0278060189) | Niles | OH | Primary Metal Manufacturing331491 | — | ● ACTIVE |
| RMRocky Mountain Steel INC. | Olathe | CO | Primary Metal Manufacturing331111 | 20-99 | ● ACTIVE |
Roscoe Moss Manufacturing CO | Los Angeles | CA | Primary Metal Manufacturing331210 | 100-499 | ● ACTIVE |
Rotor Clip Company, INC. | Somerset | NJ | Primary Metal Manufacturing331222 | — | ● ACTIVE |
Round Ground Metals, INC. | Hanover Park | IL | Primary Metal Manufacturing331110 | 100-499 | ● ACTIVE |
Rubadue Wire CO INC | Loveland | CO | Printing and Related Support Activities323113 | 20-99 | ● ACTIVE |
| SMSabin Metal CORP | Scottsville | NY | Primary Metal Manufacturing331419 | 100-499 | ● ACTIVE |
| SASamtech Automotive Usa, INC. | Carson | CA | Primary Metal Manufacturing331319 | 20-99 | ● ACTIVE |
| SLSanders Lead Company | Troy | AL | Primary Metal Manufacturing331410 | 500+ | ● ACTIVE |
| SESapa Extrusions North America, INC | North Liberty | IN | Primary Metal Manufacturing331316 | — | ● ACTIVE |
Sawbrook Steel Casting LLC | Cincinnati | OH | Primary Metal Manufacturing331513 | — | ● ACTIVE |
Schoellhorn - Albrecht Machine CO INC | Saint Louis | MO | Primary Metal Manufacturing331513 | 20-99 | ● ACTIVE |
Scicast International Incorporated | Bechtelsville | PA | Primary Metal Manufacturing331523 | 20-99 | ● ACTIVE |
| SIScm Industries LLC | Prince George | VA | Primary Metal Manufacturing331314 | 100-499 | ● ACTIVE |
Seacast INC | Tulalip | WA | Primary Metal Manufacturing331511 | 500+ | ● ACTIVE |
Sea Shield Marine Products, INC. | Walnut | CA | Primary Metal Manufacturing331523 | 20-99 | ● ACTIVE |
Sea Wire & Cable INC | Madison | AL | Primary Metal Manufacturing331491 | 100-499 | ● ACTIVE |
Selmet, INC. | Albany | OR | Primary Metal Manufacturing331522 | 500+ | ● ACTIVE |
Senior Aerospace Ssp | Burbank | CA | Primary Metal Manufacturing331210 | 500+ | ● ACTIVE |
| SCShalmet CORP | Orwigsburg | PA | Primary Metal Manufacturing331221 | 100-499 | ● ACTIVE |
| SSShawnee Specialties INC. | Eau Claire | MI | Primary Metal Manufacturing331522 | 1-19 | ● ACTIVE |
Shelmet Precision Casting CO. INC. | Wild Rose | WI | Primary Metal Manufacturing331512 | 20-99 | ● ACTIVE |
Shultz Steel LLC | South Gate | CA | Primary Metal Manufacturing331221 | 100-499 | ● ACTIVE |
Sierra Sheet and Plate, INC. | Covington | GA | Primary Metal Manufacturing331491 | 20-99 | ● ACTIVE |
Sigmund Cohn CORP. | Mount Vernon | NY | Primary Metal Manufacturing331491 | 20-99 | ● ACTIVE |
Signicast LLC | Hartford | WI | Primary Metal Manufacturing331512 | 500+ | ● ACTIVE |
| SCSilver City Aluminum | Taunton | MA | Primary Metal Manufacturing331311 | 20-99 | ● ACTIVE |
Sioux City Foundry Company | Sioux City | IA | Primary Metal Manufacturing331511 | — | ● ACTIVE |
| SMSipi Metals CORP | Chicago | IL | Primary Metal Manufacturing331410 | 100-499 | ● ACTIVE |
Smith Ironworks INC | Lyerly | GA | Primary Metal Manufacturing331210 | — | ● ACTIVE |
| SISolidiform, INC | Fort Worth | TX | Primary Metal Manufacturing331524 | 20-99 | ● ACTIVE |
Solventum Purification INC. | Meriden | CT | Primary Metal Manufacturing331410 | 100-499 | ● ACTIVE |
| SCSouthern Cast Products INC | Meridian | MS | Primary Metal Manufacturing331513 | 20-99 | ● ACTIVE |
Southern Tool LLC | Oxford | AL | Primary Metal Manufacturing331512 | 100-499 | ● ACTIVE |
Southwest Fabrication LLC | Phoenix | AZ | Primary Metal Manufacturing331110 | 20-99 | ● ACTIVE |
Southwest Steel Casting Company, LLC | Longview | TX | Primary Metal Manufacturing331513 | 20-99 | ● ACTIVE |
Southwire Company, LLC | Carrollton | GA | Primary Metal Manufacturing331318 | — | ● ACTIVE |
Spartan Light Metal Products, INC. | Sparta | IL | Primary Metal Manufacturing331521 | 100-499 | ● ACTIVE |