The alumina protective cover has good insulation and high temperature resistance, very high mechanical strength, very good conductivity, and very light weight. The density of alumina ceramic protective cover is very small, its density is 3.5 grams per cubic centimeter, and its density is only half of that of steel. Usually, in the case of the same volume, the quality of alumina protective cover is only half of that of steel. Alumina ceramic protective cover has very good wear resistance. The wear resistance of alumina ceramic protective cover is more than 200 times that of manganese steel.
The alumina ceramic protective cover has excellent mechanical strength, high temperature resistance, wear resistance, wear resistance, good insulation performance and durability. Long life, energy saving, environmental protection, safety, control points and other advantages. 
Alumina ceramics can provide customers with lower cost and higher quality products. Because the strength of alumina ceramics is only second to that of diamond, its wear resistance far exceeds that of alloy steel. Under the same conditions, its service life also exceeds ten times. In addition, the net weight of alumina ceramics is only half that of steel, which greatly reduces the load and loss of machinery and equipment. And the production cost of alumina ceramic raw materials is relatively low, which is an important new type of ceramic at present. As far as products are concerned, alumina ceramics have excellent dielectric strength, low high-frequency loss but good high-frequency dielectric strength, and secondly, alumina ceramic raw materials have temperature resistance, small linear expansion coefficient, and shock resistance. High toughness and good thermal conductivity. In addition, alumina ceramics have the characteristics of chemical corrosion resistance and molten metal resistance. It is not known that alumina ceramics are flame-retardant and stainless steel is strong and not easy to be destroyed. There are other materials and metal composite materials that cannot be compared. good features.