iron ingot 铁锭
puddled iron 搅炼熟铁
round iron 圆铁
scrap iron 废铁
steel 钢
crude steel 粗钢
mild steel, soft steel 软钢，低碳钢
hard steel 硬钢
cast steel 坩埚钢，铸钢
stainless steel 不锈钢
electric steel 电工钢，电炉钢
high-speed steel 高速钢
moulded steel 铸钢
refractory steel 热强钢，耐热钢
alloy steel 合金钢
plate, sheet 薄板
corrugated iron 瓦垅薄钢板
tinplate, tin 马口铁