Brown Fused Alumina Micro Powder possesses properties including high hardness, high temperature resistance, stable chemical performance, particle uniformity, high grinding efficiency, no scratches, etc
Brown Fused Alumina Micro Powder possesses properties including high hardness, high temperature resistance, stable chemical performance, particle uniformity, high grinding efficiency, no scratches, etc, which is suitable to be used in super finishing of machinery, precision casting of optical glass, wafer polishing etc.
Our micro powder is made from high standard raw material, forms uniform particle shape and hardness through unique processing. We manufacture micro powder based on high standard, aim at stable polishing ability, excellent removal rate, and high smoothness on work surface, outstanding chemical stability and environmental-friendly material. Micro powder is mainly used for grinding and polishing semiconductor chip and LED liner, it also possess superior capabilities in the processing of lenses, prism and other glassware used for optical applications, therefore, it is the first choice of polishing high precision products.
Micro hardness: 1800~2200kg/cm2 Density: 3.97g/cm3 Melting point: 2050℃
Thermal expansion coefficients: 6.4(20~400℃);7.6(20~800℃)
Grit | Max d 0 /µm | Max d 3/µm |
The median grain |
Min d 94/µm |
#240 | 127.0 | 103.0 | 57.0±3.0 | 40.0 |
#280 | 112.0 | 87.0 | 48.0±3.0 | 33.0 |
#320 | 98.0 | 74.0 | 40.0±2.5 | 27.0 |
#360 | 86.0 | 66.0 | 35.0±2.0 | 23.0 |
#400 | 75.0 | 58.0 | 30.0±2.0 | 20.0 |
#500 | 63.0 | 50.0 | 25.0±2.0 | 16.0 |
#600 | 53.0 | 41.0 | 20.0±1.5 | 13.0 |
#700 | 45.0 | 37.0 | 17.0±1.5 | 11.0 |
#800 | 38.0 | 31.0 | 14.0±1.0 | 9.0 |
#1000 | 32.0 | 27.0 | 11.5±1.0 | 7.0 |
#1200 | 27.0 | 23.0 | 9.5±0.8 | 5.5 |
#1500 | 23.0 | 20.0 | 8.0±0.6 | 4.5 |
#2000 | 19.0 | 17.0 | 6.7±0.6 | 4.0 |
#2500 | 16.0 | 14.0 | 5.5±0.5 | 3.0 |
#3000 | 13.0 | 11.0 | 4.0±0.5 | 2.0 |
#4000 | 11.0 | 8.0 | 3.0±0.4 | 1.3 |
#6000 | 8.0 | 5.0 | 2.0±0.4 | 0.8 |
#8000 | 6.0 | 3.5 | 1.2±0.3 | d75 |