Technical Data of High Alumina
Refractories
50 - 85 % Al2O3
Brand Name
Chimical Composition ( wt% ):-
Silica ( SiO2 )
Alumina ( Al
2
O
3
)
Titania ( TiO2 )
Iron ( Fe2O3 )
Lime ( CaO )
Magnsia ( MgO )
Alkalies ( Na2O + K2O )
Phiysical Propertise:
Bulk Density ( g/cm3 )
Apparent Porosity ( % )
Modulus of Rupture ( kg/cm2 )
Cold Crushing Strength ( kg/cm2 )
Linear Thermal Expanstion at 1000 °C ( % )
Thermal Conductivity ( W/m.k )
at 400°C
at 700°C
at 1000°C
Refractoriness ( °C )
Refractoriness under Load Ta ( °C )
Recommended Service Temp ( °C )
ACR 50
42.0 - 45.0
50.0 - 53.0
2.4 - 2.6
1.4 - 1.6
0.2 - 0.4
0.1 - 0.2
0.3 - 0.5
2.30 - 2.35
18 - 20
100 - 120
500 - 550
0.40 - 0.50
1.30 - 1.35
1.32 - 1.40
1.40 - 1.451
750 - 1770
> 1480
1550
ACR 60
32.0 - 35.0
60.0 - 62.0
2.5 - 2.7
1.4 - 1.6
0.2 - 0.4
0.1 - 0.2
0.3 - 0.5
2.45 - 2.50
18 - 20
100 - 120
500 - 550
0.50 - 0.60
1.35 - 1.40
1.40 - 1.45
1.50 - 1.55
1790 - 1825
> 1500
1600
ACR 65
28.0 - 30.0
65.0 - 67.0
2.6 - 2.8
1.5 - 1.6
0.2 - 0.4
0.1 - 0.2
0.3 - 0.5
2.50 - 2.55
19 - 21
100 - 120
500 - 550
0.55 - 0.65
1.40 - 1.45
1.45 - 1.50
1.60 - 1.65
> 1825
> 1500
1650
ACR 70
22.0 - 24.0
70.0 - 72.0
2.80 - 3.00
1.50 - 1.60
0.20 - 0.30
0.10 - 0.20
0.30 - 0.50
2.60 - 2.65
18 - 20
100 - 120
550 - 650
0.75 - 0.80
1.45 - 1.50
1.50 - 1.55
1.65 - 1.70
1825 - 1850
> 1530
1700
ACR 80
14.0 - 16.0
78.0 - 80.0
3.20 - 3.50
1.60 - 1.70
0.20 - 0.30
0.10 - 0.20
0.30 - 0.40
2.75 - 2.78
18 - 20
100 - 130
600 - 850
0.85 - 0.90
1.55 - 1.60
1.60 - 1.65
1.65 - 1.70
1850 - 1880
> 1550
1750
ACR 82
12.0 - 14.0
80.0 - 82.0
3.20 - 3.60
1.60 - 1.65
0.10 - 0.20
0.10 - 0.15
0.20 - 0.30
2.78 - 2.80
18 - 21
100 - 130
600 - 800
0.95 - 1.00
1.75 - 1.80
1.80 - 1.85
1.85 - 1.90
> 1880
> 1600
> 1750
ACR 85
9.0 - 12.0
82.0 - 85.0
3.00 - 3.40
1.60 - 1.65
0.10 - 0.20
0.10 - 0.15
0.20 - 0.30
2.78 - 2.81
19 - 21
100 - 140
600 - 800
1.00 - 1.05
1.80 - 1.83
1.83 - 1.86
1.86 - 1.93
> 1880
> 1600
> 1750
Developer : Mohamed Said Ramadan
© Alexandria Company for Refractories 2017