zh-hant:肥粒铁

肥粒铁（α-Fe, δ-Fe）
奥氏体（γ-Fe）
马氏体
波来铁（88%肥粒铁，12%碳化三铁）
变韧铁
粒滴斑铁（肥粒铁及碳化三铁
的共晶混合物，含碳量4.3%）
碳化三铁（Fe₃C）
β铁（β-Fe）
ε铁（ε-Fe）

铸铁是指含碳量在2%以上的铸造铁碳合金的总称，通常由生铁、废钢、铁合金等以不同比例配合通过熔炼而成。

主要元素除铁、碳以外还有硅、锰和少量的磷与硫等元素，是将生铁（有时有炼钢生铁）重新回炉熔化，并加进铁合金、废钢、回炉铁调整成分而得到的。

Cast iron is a group of iron-carbon alloys with a carbon content greater than 2%. Its usefulness derives from its low melt temperature. The alloy constituents affect its colour when fractured: white cast iron has carbide impurities which allow cracks to pass straight through; grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks; ductile cast iron which stops the crack from further progressing due to their spherical graphite "nodules".