Top 7 Graphite Susceptor Manufacturers in Paris, France

1. Mersen S.A.

Mersen is the most important Paris-based company directly involved in the production of Graphite susceptors used in semiconductor epitaxy, LED manufacturing, and high-temperature industrial processes. Its graphite susceptors are engineered with extremely high purity levels, uniform thermal conductivity, and SiC (Silicon Carbide) coating compatibility, allowing stable wafer processing in MOCVD and CVD reactors. These materials are designed to maintain structural stability under extreme thermal cycling, ensuring consistent wafer quality and minimal contamination risk. Additionally, Mersen's advanced machining and coating technologies allow precise dimensional control, which is essential in semiconductor-grade applications.

Founded in 1891, Mersen has over a century of expertise in electrical systems and advanced materials engineering. The company produces a wide portfolio including graphite components, SiC-coated parts, heat exchangers, and electrical protection systems used in aerospace, energy, and semiconductor industries. Businesses choose Mersen because of its high-purity material science, strict European manufacturing standards, and long-term reliability in extreme environments. What sets Mersen apart is its deep integration between research, custom engineering, and industrial-scale production, allowing it to directly support semiconductor innovation across Europe.

Address: Tour EQHO, 2 Avenue Gambetta, 92400 Courbevoie (La Défense), Paris Region, France

2. Saint-Gobain Advanced Materials

Saint-Gobain is a global French industrial group that supplies advanced materials, including high-performance carbon and Sic coated graphite susceptor components used in semiconductor thermal processes. While not exclusively a susceptor manufacturer, its engineered materials are widely used in high-temperature furnace systems, thermal insulation structures, and graphite-based support components that are essential in susceptor assemblies. These materials are known for their thermal resistance, structural stability, and long service life under continuous industrial heating cycles. Additionally, Saint-Gobain develops customized ceramic and carbon solutions that support precision manufacturing environments.

Founded in 1665 in France, Saint-Gobain is one of the world's oldest and most established industrial groups. The company operates across construction materials, mobility, and advanced industrial solutions, serving high-tech industries globally. Clients choose Saint-Gobain because of its unmatched industrial scale, material science expertise, and consistent product quality standards. What makes it unique is its ability to combine centuries of material innovation with modern semiconductor-grade engineering requirements.

Address: Les Miroirs, 18 Avenue d'Alsace, 92400 Courbevoie, Paris Region, France

3. Imerys Graphite & Carbon

Imerys Graphite & Carbon is a key supplier of high-performance graphite materials used in semiconductor susceptors, Highly oriented pyrolytic graphite and high-temperature processing systems. Their graphite products are engineered for high density, fine grain structure, and superior thermal conductivity, making them suitable for precision heating environments such as wafer processing and crystal growth systems. Additionally, their materials offer strong resistance to thermal shock and chemical degradation, ensuring stable performance over long production cycles. These properties make them highly valuable in industries requiring strict thermal uniformity.

The Imerys Group was formed in 1880 in France and has evolved into a global leader in mineral-based specialty solutions. The graphite division focuses on advanced carbon materials used in metallurgy, electronics, and energy applications. Businesses choose Imerys because of its consistent material purity, global supply reliability, and advanced processing capabilities. What sets the company apart is its ability to refine natural and synthetic graphite into highly specialized industrial-grade materials tailored for high-tech applications.

Address: Imerys Headquarters, 43 Quai de Grenelle, 75015 Paris, France

4. MERSEN Graphite Solutions Division

Within Mersen, the Graphite Solutions division specifically focuses on high-performance Graphite semiconductor and semiconductor reactor components. These products are widely used in epitaxy reactors, MOCVD systems, ion implantation tools, and wafer processing equipment, where thermal stability and purity are critical. The susceptors are designed with SiC coatings and ultra-high purity graphite grades to minimize contamination and ensure uniform wafer temperature distribution. Additionally, Mersen's engineering teams collaborate directly with semiconductor equipment manufacturers to optimize susceptor design for specific reactor geometries.

With deep industrial roots in France, Mersen has continuously advanced its graphite technology to meet the evolving demands of semiconductor fabrication. The division also provides customized machining, coating, and purification processes to achieve semiconductor-grade performance. Clients choose this division due to its engineering precision, customization capability, and strict quality certification systems. What makes it unique is its ability to directly co-develop components with OEM reactor manufacturers, ensuring maximum compatibility and efficiency.

Address: Same as Mersen Headquarters – Tour EQHO, Courbevoie, Paris Region, France

5. Carbone Lorraine Legacy Systems

Carbone Lorraine, the historical foundation of today's Mersen, played a major role in developing early Silicon graphite and carbon-based industrial materials in France. Its legacy technologies continue to influence modern graphite susceptor production through advanced carbon graphitization processes and high-temperature material engineering. These innovations laid the groundwork for modern semiconductor-grade graphite components used in thermal processing systems. Additionally, the company's early expertise in electrical carbon components evolved into today's precision graphite manufacturing systems.

Founded through mergers dating back to the late 19th century, Carbone Lorraine contributed significantly to France's industrial carbon engineering sector. Its expertise in electrical brushes, graphite parts, and furnace components eventually evolved into Mersen's advanced materials division. Clients continue to benefit from this legacy through improved durability, refined material purity, and enhanced thermal performance. What makes this heritage important is its direct influence on today's high-end graphite susceptor technology used across Europe.

Address: Integrated within Mersen Corporate Structure – Courbevoie, Paris Region, France

6. Heraeus France

Heraeus operates in France as a supplier of advanced materials used in semiconductor, Large graphite crucible and high-temperature processing systems, including components that support graphite susceptor assemblies. Their products include quartz, ceramic, and high-purity materials that work alongside graphite susceptors in wafer production systems. These materials ensure thermal insulation stability and chemical purity, which are essential for maintaining controlled reactor environments. Additionally, Heraeus provides engineering support for semiconductor process optimization and material integration.

Founded in 1851 in Germany, Heraeus is a global technology group specializing in precious metals, medical technology, and advanced materials. Its French operations support semiconductor and industrial clients across Europe. Businesses choose Heraeus because of its high material purity standards, strong engineering expertise, and global industrial reputation. What sets it apart is its ability to combine multi-material engineering with semiconductor process optimization support.

Address: Heraeus France, 10-12 Avenue de l'Arche, 92400 Courbevoie, Paris Region, France

7. Air Liquide Advanced Materials

Air Liquide is a major French industrial gas and materials company that also supports semiconductor manufacturing environments where graphite susceptors are used. While not a direct susceptor producer, its role is critical in providing ultra-high purity gases, deposition environments, and process control systems that enable susceptor-based wafer production. These controlled environments ensure that graphite susceptors perform efficiently without contamination during high-temperature semiconductor processes. Additionally, Air Liquide develops integrated solutions for epitaxy and thin-film deposition systems.

Founded in 1902 in France, Air Liquide is one of the world's leading industrial gas companies. It serves semiconductor, healthcare, and energy industries globally. Clients choose Air Liquide because of its process purity leadership, advanced industrial gas systems, and strong technological integration in semiconductor manufacturing. What makes it unique is its ability to support the entire semiconductor ecosystem, including the environments in which graphite susceptors operate.

Address: 6 Rue Cognacq-Jay, 75007 Paris, France