As far as hardness and solidness is concerned, silicon carbide is second only to diamonds and is about one-third the cost. Silicon carbide has been used as a substitute for diamond cutters in many areas of industry.
在堅硬度方面，屬於精密陶瓷的碳化矽硬度僅次於鑽石，價格卻比鑽石便宜了將近三分之一，在工業運用上，可取代鑽石，做為各項切割、研磨工具。