SGL Carbon develops and manufactures carbon-based materials and engineered solutions, with particular depth in specialty graphite, carbon fibers and composite materials. The company combines material production with precision processing, engineering and services, including a fully integrated specialty-graphite value chain and process technology for corrosive applications. Based at 28 locations across Europe, North America and Asia, SGL Carbon employs around 3,800 people and reported 2025 revenue of €850 million.
NeoGraf Solutions, LLCTracing its graphite work to a Cleveland carbon company founded in 1881, NeoGraf Solutions manufactures specialty carbon and graphite materials from its headquarters in northeast Ohio. Formed as a stand-alone company in 2017, it combines in-house research, development and manufacturing to make flexible graphite sheets, powders and related materials for demanding uses such as thermal management, industrial sealing and fuel-cell flow-field plates. Its products have supported applications ranging from smartphones and marine batteries to the Hubble Space Telescope and International Space Station.LAKEWOOD, OH
Semco CarbonSince 1971, Semco Carbon has specialized in custom machining carbon and graphite components, working exclusively with these materials from its Lorain, Ohio facility. Its 45,000-square-foot operation handles everything from prototype and repair work to parts made from raw blocks exceeding two tons, while maintaining nearly 400 tons of graphite inventory for quick production and direct material sales. Semco also purchases obsolete carbon and graphite for reclamation or appropriate disposal.LORAIN, OH
Metallized Carbon CorporationMetallized Carbon Corporation has been advancing carbon graphite engineering from New York since 1945, building its reputation around materials for severe operating conditions. The company develops self-lubricating components for critical systems serving industries such as aerospace and energy, with global manufacturing and support across five locations. Its specialized grades for medical and pharmaceutical applications meet USP Class VI standards.OSSINING, NY
Nippon Kornmeyer Carbon Group GmbHSince 1968, Nippon Kornmeyer Carbon Group has built its identity around high-performance materials engineering in close partnership with Japanese graphite manufacturer Nippon Carbon. From its Windhagen base, the company develops carbon-based components for demanding customers in fields such as semiconductor technology and aerospace, with Fraunhofer IISB collaborations behind its patented SICCOTA® and TACCOTA® coating technologies.WESTLAKE, OH