PRODUCT DESCRIPTION
Brown fused alumina, BFA, A, Fused Corundum, Brown corundum abrasive



Product description of Brown aluminum oxide:

Brown aluminum oxide is electrically fused in an arc furnace from a mixture of bauxite at high temperature. It has brown color, high hardness and great toughness. The abrasive tools made of brown aluminum oxide are suitable for grinding carbon steel, normal alloy steel, malleable cast iron and hard bronze. It used for refractory aluminum oxide lining mixture, pouring materials castable, etc.



Grain types and symbol

Usage For vitrified wheels For organic wheels For belts For sheets For abrasives blasting
Symbol A A-B A-P1 A-P2 A-S


Typical value of physical chemical performance index

Type

Grit

Chemical composition (%)

CAL.TEM.

℃

Magnetic % contens≤

Range of buld density(g/cm3)

AL2O3 SiO2 TiO2 Fe2O3 CaO
A F46 95.72 0.92 2.52 0.06 0.28 1050-1350 0.009 1.85
F120 95.30 1.12 2.74 0.07 0.27 1050-1350 0.008 1.62
F180 94.70 1.27 2.93 0.15 0.39 1050-1350 0.006 1.54
F360 92.42 1.75 3.85 0.62 0.45 1050-1350 0.022 1.29
A-B F46 95.56 1.12 2.39 0.06 0.30 - 0.006 1.85
F120 95.12 1.22 2.62 0.08 0.32 - 0.009 1.61
F180 94.32 1.30 2.91 0.16 0.30 - 0.010 1.54
F360 91.47 1.78 4.36 0.65 0.50 - 0.018 1.22
A-P1 P40 95.57 1.08 2.45 0.06 0.28 - 0.007 1.72
P120 94.85 1.17 2.76 0.05 0.29 - 0.009 1.58
P180 93.89 1.37 3.40 0.15 0.32 - 0.006 1.52
P600 91.82 1.69 4.67 0.52 0.49 0.008 1.25
A-P2 P40 93.27 1.32 3.20 0.19 0.30 - 0.007 1.71
P120 92.85 1.27 3.21 0.21 0.37 - 0.008 1.56
P180 91.65 1.42 3.72 0.27 0.42 - 0.007 1.50
P600 90.80 1.77 4.62 0.72 0.56 - 0.006 1.21




Chart for grit size and chemical component of china GB/T 2478-1995

Type & Grit Chemical composition (%)
Al2O3 TiO2 CaO
A

A-P1

F4-F80(P80) 95.00-97.50 1.50-3.80 0.45
F90-F150

(P100-P150)

94.00-97.50
F180-F220

(P180-P220)

93.00-97.50
F220(P220) ≥92.00
A-B

A-P2

F4-F80

(P8-P80)

≥93.00 1.50-4.20 -
F90-F220

(P100-P220)

≥91.00
F220(P220) ≥90.00 ≤4.50 -
A-S F16-F220 ≥92.00 ≤4.20 -