Since 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.
ISO 9001:2015
certification
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
SGL CarbonSGL 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.ST. MARYS, PA
Momentive TechnologiesWith roots reaching back to 1891, Momentive Technologies develops high-purity fused quartz, crucibles and advanced ceramic materials for demanding semiconductor and aerospace applications. The company operates 10 facilities across Asia, Europe and North America, selling in 30 countries and supporting more than 900 employees worldwide. Its quartz crucibles are built for silicon ingot production, while its custom thermal pyrolytic graphite solutions have served aerospace and military systems for decades.STRONGSVILLE, OH
Ei6Evolving from a Birmingham foundry-supply company founded in 1958, family-owned Ei6 now engineers and manufactures carbon and graphite materials and precision components for demanding industrial applications. The three-generation business combines global distribution with machining and powder operations, including custom graphite parts made to drawing and high-temperature materials. Ei6’s machining operation is certified to ISO 9001:2015 and AS9100:2016.PARMA, OH