Mersen USA GS Corp.
Saint Marys, PA Mersen USA GS Corp ST Marys
- UEI
- LF1VD5E8KPX5
- CAGE
- 0TRH7
- Primary NAICS
- 335991 Carbon and Graphite Product Manufacturing
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
- SAM.gov registration date
- Physical address
- 215 Stackpole St, St Marys, PA 15857, USA
- Website
- mersen.com
- Founded
- 1891
- Employees
- 1K-5K
- Estimated annual revenue
- $1B-$10B
- Industry
-
- Industrials
- Capital Goods
- Industrial Conglomerates
- Industrials & Manufacturing
- SIC code
- 36 Electronic & Other Electric Equipment
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| ISO-mold-graphite | Strategic Materials | $9,993,945 |
About Mersen USA GS Corp.
Mersen USA GS Corp.'s St. Marys Division, a foreign-owned manufacturer of carbon and graphite products, operates primarily as a subcontractor (80% of recent awards) supplying specialized materials and equipment to nuclear security and aerospace programs, with one recent direct prime contract to the Defense Logistics Agency. The company competes full-and-open without set-aside designations.
Mersen USA GS Corp. is a for-profit manufacturer headquartered in St. Marys, Pennsylvania, specializing in ultra-fine grained synthetic iso-molded graphite and related carbon products for defense and national security applications. The company's recent prime award is a $9.99 million firm fixed-price definitive contract from the Defense Logistics Agency's Strategic Materials office, awarded October 22, 2025, running through October 22, 2028, to supply up to 2,617 metric tons of graphite billets meeting strict bulk density (1.70–1.80 g/cm³) and particle size (10–35 mm) specifications for delivery to Hammond, Indiana. The procurement was evaluated on a lowest-price technically acceptable basis in unrestricted competition, reflecting established demand for specialized graphite materials in defense applications.
Customer concentration is diffuse across four federal agencies. The Defense Logistics Agency Strategic Materials office anchors 100% of the disclosed combined potential value ($10 million). The Department of the Air Force Air Education and Training Command accounts for two awards, the Department of Energy National Nuclear Security Administration for one, and NASA Kennedy Space Center for one. The top-customers rankings align closely because DLA's single prime award dominates dollars while Air Force awards are subcontract slots of undisclosed value.
Mersen operates as a subcontractor on four awards across the past two years: two sub tasks for the Air Force; one sub task involving Los Alamos National Laboratory management and operations (prime: Triad National Security, LLC, awarded January 12, 2026); and two sub tasks for Y-12 and Pantex facilities management (prime: Consolidated Nuclear Security, LLC, awarded May 16 and August 21, 2024). Activity is sparse—three awards in 2024, one in 2025, one in 2026—with combined obligated dollars ($11.3 million) exceeding combined potential value, indicating execution against earlier task orders or option exercises.
Quick answers
What is Mersen USA GS Corp.'s UEI?
Mersen USA GS Corp.'s Unique Entity ID (UEI) in SAM.gov is LF1VD5E8KPX5.
What is Mersen USA GS Corp.'s CAGE code?
Mersen USA GS Corp.'s CAGE code is 0TRH7.
What is Mersen USA GS Corp.'s primary NAICS code?
Mersen USA GS Corp.'s primary NAICS code is 335991 (Carbon and Graphite Product Manufacturing).
Where is Mersen USA GS Corp. located?
Mersen USA GS Corp.'s physical address in SAM.gov is 215 Stackpole St, St Marys, PA 15857, USA.
Is Mersen USA GS Corp. registered in SAM.gov?
Yes. Mersen USA GS Corp.'s SAM.gov registration is active through March 12, 2027.
What is Mersen USA GS Corp.'s most recent federal award?
Mersen USA GS Corp.'s most recent federal contract award is ISO-mold-graphite (SP800026C0001), from Strategic Materials, on October 22, 2025.
On GovTribe
See Mersen USA GS Corp.'s full federal record
- Federal contract awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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