ALEXANDRIA CO. FOR REFRACTORIES ACR ﺎﻳﺮﺤﻠﻟ ﺔﻳﺪﻨﻜﺳﻹ ﺔﻛﺮﺷ  ﺔﻴﻧﺪﻌﻤﻟ ﺎﻋﺎﻨﺼﻟ
Technical Data of High Alumina Refractories 50 - 85 % Al2O3

Brand Name

Chimical Composition ( wt% ):-

Silica  ( SiO2 )

Alumina ( Al2O3

 )

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

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Developer : Mohamed Said Ramadan © Alexandria Company for Refractories 2017