Safety razor entitled "Fuck Everything, We're Doing Five Blades" predicted the release of five-blade cartridges, two years before their commercial introduction. South Korean manufacturer Dorco released their own six-blade cartridge in 2012, and later released a seven-blade cartridge. Gillette has also produced powered variants of the Mach3 (M3Power, M3Power Nitro) and Fusion (Fusion Power and Fusion Power Phantom) razors. These razors accept a single AAA battery which is used to produce vibration in the razor; this action was purported to raise hair up and away from the skin prior to being cut. These claims were ruled in an American court as "unsubstantiated
Razor blade steel Razor blade steel Razor blade steel, also known as razor steel, is special type of stainless steel designed specifically to be used as a razor blade. Its defining characteristics are its chemical composition and shape. Jindal Stainless is the world's largest producer of razor blade stainless steel. Razor blade steel is a martensitic stainless steel with a composition of chromium between 12 and 14.5%, a carbon content of approximately 0.6%, and the remainder iron and trace elements. The United States International Trade Commission defines that the shape of the material must be flat rolled coils that are not more than