Aluminum Oxide

Brown fused aluminum oxide abrasives are engineered to meet the requirements of pressure blast operations.  Popular applications include:

  • surface preparation
  • coatings and paint removal
  • heat treat and mill scale removal
  • cleaning surface contaminants
  • imparting anchor patterns
  • surface blending
  • mold cleaning
  • glass etching
  • monument lettering.

Typical Chemical Analysis

Al2O3_____94.50%

TiO2______3.50

SiO2______.63

Fe2O3_____.32

Standard Grit Sizes: 16-240 (Other sizes available)

Our Brown Fused Aluminum Oxide can be certified to meet most of today’s standard specifications including Military, Aerospace and Automotive specifications.

Grit SizeSieve Range

Sieve Opening

(Inches)

Sieve Opening

(Millimeters)

Sieve Opening

(Microns)

Surface Finish

(RMS)*

1610-25.0787-.02802.00-0.712000-710490
2010-30.0787-.02342.00-0.592000-590440
2414-40.0555-.01651.41-0.421141-420380
3016-45.0469-.01391.19-0.351190-350330
3618-50.0394-.01171.00-0.2971000-297280
4625-70.0278-.00830.71-0.210710-210245
5430-80.0232-.00700.59-0.177590-177225
6035-100.0197-.00590.50-0.149500-149205
8045-140.0139-.00410.35-0.105350-105150
10060-230.0098-.00250.250-0.063250-63120
12070-270.0083-.00210.210-0.053210-53105
15080-325.0070-.00170.177-0.044177-44100
180100-400.0059-.00150.149-0.037149-3795
220120-30 microns.0049-.00120.125-0.030125-3090
240140-20 microns.0041-.00080.105-0.020105-2090

*Test parameters:  direct pressure machine, 70 PSI, black iron

samples, 100-150 RMS original finish, 3/8” nozzle, 90-deg blast angle

Material Specifications

Origin:  China

Hardness:  2000-2200 Knoop (9.0 Mohs)

True Density:  3.96 gm/cc

Bulk Density:  112-138 lbs/ft3

Melting Point:  2000° C

Crystal Form:  Al2O3 Alpha Alumina

Chemical Nature:  Amphoteric

Contact Us for more information and process quotes.