Vocabulary What does 鋼鉄 (こうてつ, koutetsu) mean? 鋼鉄 (こうてつ, koutetsu) means steel. Quick factsReadingこうてつRomajikoutetsuPart of speechnoun 鋼鉄こうてつkoutetsusteel1noun steelKanji in this word鋼steel鉄iron