鋳ちゅう鍛たん鋼こうMeanings1nouncast and forged steelTechnical term in metallurgy and manufacturing for steel that has undergone both casting and forging processes.この部ぶ品ひんは鋳ちゅう鍛たん鋼こうで作つくられています。This part is made of cast and forged steel.