Black Aluminum oxide blasting media F12#-400# Al2O3 62% Min.
Black aluminum oxide, also known as low-aluminum corundum, is a
black gray crystal with α-Al2O3 and iron spinel as the main ore
phase, produced by melting aluminum bauxite in an electric arc
furnace.
Two grades are available, one is ordinary grade, with Al2O3
60%Min., another is top grade, with Al2O3 80%Min..
The top grade BA is researched and produced to replace of 95% grade
Brown aluminum oxide in bonded abrasives application and
sandblasting application.
| Specification | Chemical Composition % |
| Al2O3 | Fe2O3 | SiO2 |
| Ordinary Grade | 62% Min. | 6-12% | ≤25 |
| Top quality | 80% Min. | 4-8% | ≤10 |
| Items | Index |
| Color | Black |
| Crystal Structure | Trigonal |
| Hardness (Mohs) | 8.0-9.0 |
| Melting temperature(℃) | 2050 |
| Max. operating temperature(℃) | 1850 |
| Specific gravity(g/cm3) | 3. 50 Min. |
| Sizes Available: |
| Ordinary Grade | Top-quality |
| Grits: F12#-F400 | Grits: F46#-F240# |
| Section sand: 0-1,0.4-1,1-3,3-5mm | Micropowder: F280-F1000 |
Package: 20kgs paper box+Pallets or as per customer's requests.
Delivery: 10-30 days on board according to quantity 25-200mt.
FOB Tianjin, China
- The application of 80 BA grit size: F12-F220#, especially 20#, 24#, 30#, 36#, 46#
Applicable to produce Resin-bonded cutting disc by mixing with BFA
Adding15%-30% black aluminum oxide grits with brown fused alumina
to produce resin bonded cutting discs can improve the cuttings
discs work life and the incision quality. Moreover, it can reduce
the production cost obviously.
- The application of 80 BA grit size: F12-F220#
Sandblasting, ideal choice to replace 95% Al2O3 BFA
Black Aluminum Oxide girts can be used as blasting media to
sandblast for Stainless steel, metal products, optical glass,
bamboo and wood products for impurity cleaning, vessel body
de-rusting cleaning, de-burring, surface decontamination , matte
treatment, pre-treatment before coating, pipeline cleaning, Jean
cloth sandblasting, etching art, stress relief etc.
Comparing with Grade A Brown Aluminum oxide (Al2O3 95%), and Grade
B Brown Aluminum oxide (Al2O3 85%), Black aluminum oxide is with
moderate hardness, and stable performance, can replace 95 BFA
easily, and has stable supply and lower price.
Why Choose us?
1) 20 years abrasive industry experiences
2) The biggest black fused alumina producer in China, one of Top 10
corundum manufacturers in China
3) Well-known brand in China Abrasive Industry
4) Free samples to test
Caroline Cui
