The D50 value of white aluminum oxide 4000 mesh is 3.5 microns. In some precision grinding or abrasive product industries, the daily standard particle size requirement of white aluminum oxide 3.5 micron is WFA 4000 mesh. Especially for export products, the model needs to coincide with the standard JIS size.

For plastic materials or metal profiles with fine lines on the surface, during the sandblasting process of the dry sandblasting machine, the moment the white corundum grit collides with the surface of the material will produce frictional heat. This heat will darken and darken the surface of the profile.

White aluminum oxide ultrafine powder is generally only white corundum powder with a D50 median particle size below 5um. Generally used for fine grinding and polishing. The white aluminum oxide 10000 mesh ultrafine powder (D50 value of 1 micron) is the finest non-nano-scale aluminum oxide powder, and its production process is very complicated.

In thermal spraying processing, ceramic powders such as Al oxide and tungsten carbide are usually used as coating materials. The powder is sprayed on the surface of the workpiece through high-temperature melting spraying. The formed coating has the effects of wear resistance, high-temperature resistance, and corrosion resistance.

Due to its high refractory temperature and high specific gravity, white fused alumina WFA aggregate is a kind of refractory commonly used in the refractory kiln and steel-making industry. The water absorption of WFA aggregate reflects the technical indexes of porosity. The porosity of WFA is generally less than 15% and the water absorption is less than 5%.

The bulk density of white aluminum oxide is a key index for abrasive production. Bulk density refers to the mass (weight) of abrasive in unit volume under the condition of natural accumulation. It is called LPD means loose pack density.

It is very important to use proper blasting media on surfaces of acrylic, plastic, aluminum, etc. It is proved by using white alundum grit will avoid black defects. White alundum grit won’t pollute workpieces.