What is the micron size of white aluminum oxide 4000 mesh

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.

From our experience exporting to Japan market, our white aluminum oxide powder produced is coincide with the Japanese standard. However, due to the differences in detection methods and detection instruments, the D50 value is different. Our company uses a laser particle size analyzer to inspect the white fused aluminum oxide micro powder. And the JIS standard specification size gets from the sedimentation tube method. The D50 value of the JIS4000 factory inspection is about 3.5um, while the D50 value of foreign customers’ inspection is 2.96um.

Therefore, we suggest testing samples before purchasing white aluminum oxide micro powder, so as to avoid misunderstandings and achieve better results.