Which abrasive is better, white corundum or boron carbide with the same particle size?

there is no difference between good and bad abrasives, but mainly depends on the purpose. From the perspective of white corundum and boron carbide, firstly, the hardness is different, and the hardness of boron carbide is much harder than that of white corundum. But the price is also much higher. White corundum: a kind of artificial abrasive. The content of aluminum trioxide (Al2O3) is above 99%, and it contains a small amount of iron oxide, silicon oxide and other components, which is white. The product granularity is produced according to international standards and national standards, and can be processed according to the granularity required by users. The general particle size number is F4~F22, and its chemical composition varies according to the particle size. The outstanding feature is that the crystal is small in size and impact-resistant. If it is crushed by a self-grinding machine, the particles are mostly spherical, and the surface is dry and clean, which is easy to combine with the binder. Scope of application: White corundum abrasive is suitable for beautifying the surface of various high-end products, processes or hardware products. After sandblasting, the surface is white and free of any impurities, thus avoiding cleaning troubles. Fine white corundum can be used as the head of polishing and grinding. Can also be use as an additive for various products. Can be used as solid and coated abrasives, wet or dry or sprayed sand, suitable for ultra-precision grinding and polishing in crystal and electronic industries and making advanced refractories. Suitable for processing hardened steel, alloy steel, high speed steel, high carbon steel and other materials with hard hardness and high tensile strength. It can also be used as contact medium, insulator and precision casting sand, etc., to remove rust, dirt and oxide scale from iron workpieces and increase the adhesion of coatings and coatings; The aluminum workpiece is descaled, and the surface is strengthened and polished; Matte effect of descaling copper workpieces, matte effect of crystal glass products, matte effect of patterned plastic products, plush processing and effect patterns of special fabrics such as denim. Boron carbide, also known as black diamond, has a molecular formula of B4C, and is usually gray-black micropowder. It is one of the three hardest materials known (the other two are diamond and cubic boron nitride), and is used in the armor of tank cars, bullet-proof clothing and many industrial applications. Its Mohs hardness is 9.3. It was discovered as a by-product of metal boride research in the 19th century, and it was not scientifically studied until the 193s. Boron carbide can be made by reducing boron trioxide with carbon in an electric furnace. Boron carbide can absorb a large number of neutrons without forming any radioactive isotopes, so it is an ideal neutron absorber in nuclear power plants, and the neutron absorber mainly controls the rate of nuclear fission. Boron carbide is mainly made into controllable rods in the nuclear reactor, but sometimes it is made into powder to increase the surface area. ?