Castables are hydraulic setting products that are suitable for
installation by various methods including casting, gunning or
slap-troweling.

Skyline Components can supply a complete line of both dense
and insulating castables that can be used in wide temperature
range of 1800 - 3200°F.

WE CAN DESIGN AND SUPPLY CASTABLES TO MEET
CUSTOMER’S REQUIREMENTS.
Castables
1. Typical Lightweight Insulating Castables
Item Code
LiC26
LiC27
LiC24
LiC23
LiC23s
LiC23a
LiC18
Description
Corundum
Mullite
Floating Bead
Ceramisite
Alkali-resist
Super
-light
Maximum service temperature
2640°F
2730°F
2460°F
2300°F
2370°F
1800°F
Density
(g/cm^3)
1.0
1.3
1.2
0.8
1.5
1.7
0.45
(lb/ft^3)
62
81
75
50
94
106
28
Cold Crushing
Strength (MPa)
(Dried at
230°F)
7.5
8
7.8
7.2
35
40
5.5
(Dried at
1800°F)
30
30
12.5
12
30
35
6.5
Thermal conductivity (W/m/K)
0.35
0.35
0.31
0.26
0.26
0.35
0.26
Index of Thermal Expansion
(%, at 1800°F )
0.55
0.65
0.75
0.4
0.4
0.4
0.2
Chemical
Composition (%)
Al2O3
≥ 70
≥ 65
≥ 30
≥ 35
≥ 35
≥ 40
≥ 35
SiO2
≤ 22
≤ 25
≤ 45
≤ 50
≤ 50
≤ 45
≤ 55
2. Typical Low-Cement Castables
Item Code
LcRC26a
LcRC26b
LcRC26c
LcRC27
LcRC29
LcRC30
Service Temperature
2640°F
2730°F
2910°F
3000°F
Density
(g/cm^3)
2.3
2.5
2.6
2.65
2.7
3
(lb/ft^3)
144
156
162
165
168
187
Compressive
Strength (MPa)
(at 230°F
24 hours)
30
30
40
40
45
60
(at 2600°F
3 hours)
60
60
80
80
90
85
Modulus of Rupture
(MPa)
(at 230°F
24 hours)
5
8
9
9
10
12
(at 2730°F
3 hours)
8
(2460°)
8
(2460°)
10
(2640°F)
10
(2640°F)
12
15
Linear Change after Firing for 3
hours (%)
≤ ± 0.5
(2460°)
≤ ± 0.5
(2460°)
≤ ± 0.5
(2640°F)
≤ ± 0.5
(2640°F)
≤ ± 0.5
(2730°F)
≤ ± 0.5
(2730°F)
Al2O3 Concentration (%)
≥ 45
≥ 60
≥ 70
≥ 75
≥ 80
≥ 90
3. Typical Refractory Castables used in Super-High Temperature
Item Code
HTC32
HTC33
Description
Alumina-spinel castable
Service Temperature
3200°F
1760°C
3270°F
1800°C
Density
(g/cm^3)
2.8
3
(lbs/ft^3)
175
187
Cold Crushing Strength (MPa)
(at 230°F
24 hours)
≥ 40
≥ 40
(at 2600°F
3 hours)
≥ 60
≥ 60
Modulus of Rupture (MPa)
(at 230°F
24 hours)
8
8
(at 2730°F
3 hours)
10
12
Linear Change after Firing for 3 hours (%)
≤ ± 0.8
(2730°F)
≤ ± 0.8
(2730°F)
Chemical Composition (%)
Al2O3
≥ 70
≥ 85
MgO
≥ 12
≥ 10
Tucson, Arizona, USA
Skyline Components, LLC