Brown aluminium oxide/brown fused alumina is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials. It is characterized by its high hardness,good toughness and shape in size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon steel,general-purpose alloy steel,annealed malleable iron and hard broze,etc.It also can be used as refractory materials.

Abrasives Grade:

Grit Size:         16#,20#,24#30#,36#,46#,54#,60#,80#,100#,120#,150#,180#,220#

Micropowder: 240#,280#,320#,360#,400#,500#,600#,800#,1000#,1200#,1500#

                         2000#,2500#,3000#,4000#

Refractory  grade:1-0mm,3-1mm,5-3mm,5-8mm -200mesh,-240mesh,-320mesh

The physical and chemical analysis

Al2O3   MIN  95%

TiO2    MAX   3.0%

Fe2O3  MAX  .3%

SiO2    MAX  1.5%

Crystalsys tem :  Hexagonal

Color:             Brown

Micro hardness :  HV1800-2200

Grinding ability(compared with diamond as one):  0.10

Hardness(mohs)  : 9

Ture density :     3.9 g/cm3

 Bulk density  :    1.68-1.95g/cm3

Application:

1. Sanding blasting

2. Resinoid high bonded abrasive tooles

3. Grinding abrasive 

4. Polishing materials

5. Precision casting