不锈钢电力盖板化学成分内，含铁成分的高低虽不能完全决定五莲花石材安全性的高低，但却是大部分五莲石材本身发生锈斑的主要原因，对五莲石材安全性的影响可以说是相当大。它是所有含铁矿物及附着在五莲石材表面氧化铁含铁量的总和。不锈钢电力盖板不论是抗震铁路水泥盖板或大理石石材中，不锈钢电力盖板若含有铁矿物以比较稳定的含铁矽酸盐矿物为主，而不是硫化铁及铁质薄膜，五莲花石材即具备较强的抗风化性。不锈钢电力盖板相反，若五莲石材中含铁矿物大多为不稳定的硫化铁等，尽管含铁量低， 材抗风化的能力也较差。
GB stainless steel electric power cover plate distributor stainless steel electric power cover plate chemical composition, iron composition of the high and low can not completely determine the high and low of five lotus stone safety, but it is the main reason why most of the five lotus stone itself rust spot, the impact on the safety of five lotus stone can be said to be quite large. It is the sum of iron content of iron oxide on the surface of wulian stone and all iron-bearing substances. Stainless steel electric power cover plate whether it is seismic railway cement cover plate or marble stone, stainless steel electric power cover plate if it contains iron ore with relatively stable ferric silicate minerals, rather than iron sulfide and iron thin film, five lotus stone has a strong weathering resistance. Stainless steel power cover plate on the contrary, if the iron ore content in wulian stone is mostly unstable iron sulfide, although the iron content is low, the ability of the material to resist weathering is poor.
