铸石板是很好的一种耐磨材料，那它为什么这么耐磨呢？铸石为什么比金属材料耐磨铸石几乎是由单种硅酸盐矿物（普通辉石）组成的。这种矿物晶体的莫氏硬度为6~6.5.由于这些矿物晶体极为细小，在显微镜下，可以看到铸石是由0.05~0.1毫米的普通辉石球体或羽毛状雏晶交织而成。这种内部结构的紧密性，就大大提高了铸石的硬度，其莫氏硬度达到7~8.任何物质硬度愈大，耐磨性能就愈好。从原子-分子结构的观点来看，这种硅酸盐矿物硅与氧原子的结合，是依靠一种很强的作用力相互联系着的（化学上叫共价键）。

Cast slate is a good abrasion resistant material, so why is it so wearable? Why stone than the metal material is composed of a single kind of wear-resistant cast stone almost silicate minerals (augite). This mineral crystal Mohs hardness of 6~6.5. due to the mineral crystal is very small, under the microscope, we can see from the cast stone is 0.05~0.1 mm augite sphere or feathery crystallite interwoven. Close the internal structure, greatly improves the hardness of cast stone, the Mohs hardness of 7~8. hardness of any material is bigger, better wear resistance. From the point of view of the atomic molecular structure, the binding of silicate minerals to silicon and oxygen atoms depends on a strong interaction (chemically called covalent bonds).