Black fused alumina is a new type abrasive material for polishing various metals. Black aluminum oxide abrasive is featured with high hardness, strong tenacity, good self-sharpening, better choosiness, higher durability, less heat generated in grinding and giving the metal works high finish, less power weakened in grinding.

Physical and chemical properties:

Color: black

Materials: Bauxite

True density: 3.9g\cm3

Hardness (mohs): 9.0

Al2O3 78%min

Fe2O3 5.0%max

SiO2 9.0%.max

TIO2 1.5-3.0%max

Characteristics:

  ♦ High hardness

  ♦ Strong tenacity

  ♦ good self-sharpening

The size we manufacture:

  ♦ 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

Application:

  ♦ used in grinding and polishing stainless steel, metal works

  ♦ Optical glass, bamboo or articles

  ♦ new grinding material of producing colophony grinding wheels, slice, and emery cloth