The company was founded in 1886 as the
National Carbon Company, which in 1917 was acquired by
Union Carbide and became its Carbon Products Division. In 1914, the company introduced the first 12-inch-diameter
graphite electrodes. In 1990, the company introduced first 30-inch-diameter
graphite electrodes for UHP DC
arc furnaces. In 1999, the company developed first natural graphite-based heat spreaders for electronic thermal management. In March 2011, the company acquired Micron Research Corporation, a manufacturer of superfine-grained graphite. In October 2011, the company acquired advanced carbon composite manufacturer Fiber Materials, which it would sell in 2016. In 2011, the company was awarded two historical markers by the Ohio Historical Society. One is for pioneering battery research made at Parma by
Lewis Urry and National Carbon Company. The other recognizes the Lakewood facility’s long history and National Carbon Company. In August 2015, GrafTech was acquired by
Brookfield Asset Management. In 2017, the company sold its NeoGraf and Advanced Graphite Materials divisions to focus on
graphite electrodes and
petroleum coke. In April 2018, the company once again became a
public company via an
initial public offering. ==Controversies==