KORRATH HIGH-TEMPERATURE CORUNDUM BRICKS

KORRATH HIGH-TEMPERATURE CORUNDUM BRICKS

KORRATH grades are corundum, tabular alumina, mullite and zirconia-based with high-density, high-purity, low porosity, and good-to-excellent thermal shock resistance.

KORRATH is available in standard brick sizes (straights, arches, and wedges), as well as custom plates and shapes.



KORRATH® HIGH-TEMPERATURE CORUNDUM BRICKS
Properties Units C901 C903 C94 C90CrZ C95Zr C98Zr C99 C99E
Density lbs/ft³
(g/cm³)
187
(3.00)
194
(3.11)
191
(3.06)
200
(3.20)
203
(3.26)
203
(3.26)
196
(3.15)
213
(3.41)
Apparent Porosity % 16 <14 15 14 13.5 14.4
16 13
Cold Crushing Strength Psi
MPa
11,500
80
14,500
100
13,300
92
14,300
100
14,600
103
11,700
82
13,000
90
17,000
117
Creep, Load 0.2Mpa
(28.4Psi) Temperature 1500ºC (2732ºF)
e25[%]
s25-15[%]
0.25
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
1.03
0.029
NA
NA
Thermal Shock Resistance
DIN 51068 Part 1
Cycles 110 40 30+ 30+ 30+ 30+ 17 8
Elevated Temperature Flexural Strength
At 1000°C (1832°F)
At 1200°C (2192°F)
At 1400ºC (2552ºF)
At 1500ºC (2732ºF)
Psi
---
1875
720
575
---
2755
1670
1160
---
---
---
1100
---
2465
1520
1220
---
---
---
1000
---
1450
1160
1230
2500
2320
1160
580
---
---
---
2320
Chemical Analysis Al2O3
SiO2
ZrO2
Fe2O3
TiO2
CaO + MgO
Na2O + K2O
Cr2O3
% > 90
< 9.5
---
0.1
0.1
0.1
< 0.2
---
94.5
4.9
---
0.1
0.1
0.1
0.1
---
90
1.3
3.5
0.1
Trace
0.1
0.1
5.0
94.2
1.8
3.6
Trace
Trace
0.2
0.2
---
97.7
0.1
1.8
Trace
Trace
0.2
0.15
---
>99.5
0.1
---
< 0.1
0.02
0.04
< 0.2
---
99.5
0.1
---
0.1
Trace
0.1
0.1
---


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