Mersen inaugurates graphite manufacturing capacities in the USA

Mersen inaugurates graphite manufacturing capacities in the United States at its Columbia plant. 

  • Further graphite production capacities as part of the Group’s 2027 plan
  • Start-up of isostatic graphite production, mainly for the semiconductor market

Paris, July 12, 2023 – Mersen (Euronext FR0000039620 – MRN), a global expert in electrical power and advanced materials, today inaugurated its Columbia site in the United States.

Spanning 240,000 square meters, the site currently employs around 80 people and is set to continue hiring over the coming years to keep pace, in particular with very strong growth linked to the semiconductor market.

After acquiring the plant in Maury County, Tennessee, in July 2019, Mersen has invested nearly USD 70 million over the past four years to reshape, rehabilitate and reindustrialize the site to address the Group’s industrial requirements and accelerate its development in its key markets. The plant will have quickly the capacity to produce 4,000 tons of extruded graphite and 2,000 tons of isostatic graphite per year. As part of its 2027 strategic plan, Mersen will further increase its global isostatic graphite manufacturing capacities to 16,000 tons by the end of 2024. The Columbia site’s configuration means it could accommodate other production capacities in the future, if required.

Luc Themelin, Mersen’s Chief Executive Officer, said: “I’m very proud of what has been achieved at the Columbia site in the last four years, in terms of redevelopment, investment, production start-up and more. It is now a key site in our manufacturing base, bringing together production capacities for extruded graphite, isostatic graphite and insulating felts. This important strengthening of our industrial capacities will enable us to achieve the objectives of our 2027 plan, and we intend to continue investing to meet increased demand from sustainable development markets, particularly the SiC semiconductor market.

Mersen – Columbia site – Tennessee, United States




Mersen is a global expert in electrical power and advanced materials for high-tech industries. With more than 50 industrial sites and 18 R&D centers in 34 countries around the world, Mersen develops custom-built solutions and delivers key products for clients in order to meet the new technological challenges shaping tomorrow’s world. For over 130 years, Mersen’s teams has focused tirelessly on innovation to accompany its clients and meet their needs. Be it in solar power, electronics, electric vehicles, aerospace or other sectors, wherever technology is progressing, you will always find a bit of Mersen. We work to constantly contribute to progress, striving daily to improve people’s lives and protect the planet. This corporate commitment has been recognized by external rating agencies, Ecovadis (Gold Medal) and MSCI (AA rating).

Mersen is listed on Euronext Paris – Compartment B and is part of the SBF120 index


Véronique Boca
VP, Communication Mersen
Tel. + 33 (0)1 46 91 54 40

Guillaume Maujean / Alexia Gachet
Tel.: +33 (0)6 33 06 55 93

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Mersen inaugurates its Columbia plant in the USA