合金元素通常用于灰色铸铁

灰色铸铁中添加的合金元素可以大致分为四类，即石墨化元素，渗碳元素，珠子稳定元素和精制元素.
在铸铁固化的过程中，碳，铝，硫，铜和镍元素在促进石墨的形成中起作用，可以将其视为石墨的形成，这些元素.} .}，但是，这些元素的效率非常不同，例如，铜在20％的silicon drapitiation.}} nickEl;共晶过渡；在共晶过渡过程中抑制石墨化，这有助于形成更多的细珠，因此也可以将其视为稳定元素.
钛的效果也很复杂.一般来说，钛是一个强大的碳化物形成元素，但是当其内容很小时（e . g .<0.08%), its fine compounds can be used as the core of graphite, has the role of promoting graphitization.
锡，锑，锰，钼，铬，铬，钒和尼伯都可以阻碍石墨的降水和生长，增强形成碳水化合物的趋势，所有这些都属于碳碳稳定元素稳定元素{{0}<0.8%, the effect of molybdenum is mild, which is to make the pearlite refinement, the content is the carburization stable element. It is generally believed that the role of manganese is to increase the amount of cast iron beads and improve the strength of cast iron. In fact, manganese is also multifaceted, when the content is high, it will make the graphite thick, thus reducing the strength of cast iron.