T-Cast® All Alumina Silica Free Fuel Cell Insulation: Refractory Specialties Inc

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Fuel Cell Insulation

T-Cast All Alumina Vacuum-Formed Shapes and Boards
for use in reducing atmospheres in fuel cell applications.

T-CAST® ALL ALUMINA formulations were developed for use in applications where the presence of silica would be detrimental in high temperature reducing atmospheres such as those encountered in syngas processes or hydrogen fuel cells. These products are formed from polycrystalline alumina fibers and high purity alumina binders and are available in several densities with varying degrees of insulating properties.

Formula	AA-15	AA-30	AA-45
TYPICAL PHYSICAL PROPERTIES
Color	Snow-White	Snow-White	Snow-White
Bulk Density (lbs/ft³)	13-17	28-32	43-47
Continuous Use Temperature (ºF)	2900	2900	2900
Intermittent Use Temperature (ºF)	3000	3000	3000
Flexural Strength M.O.R. (lbs/in²)	100	250	750
Linear Shrinkage (%) @ Use Temp. (24 Hrs)	5% Max.	5% Max.	5% Max.
Melting Point (°F)	> 3350	>3350	>3350
TYPICAL CHEMICAL PROPERTIES:
SiO₂	3%	2%	<2%
AI₂O₃	97%	98%	>98%
Loss on Ignition	0.0%	0.0%	0.0%
COMPRESSIVE STRENGTH (lbs/in²):
- At 5% Strain	38	50	N/A
- At 10% Strain	48	150	N/A
- At 15% Strain	52	120	N/A
THERMAL CONDUCTIVITY (Btu•in/hr•ft²•ºF):
Mean Temperature (°F):
500	0.41	0.66	1.12
1000	0.61	0.86	1.43
1500	0.92	1.11	1.61
2000	1.31	1.31	2.04
2500	1.81	1.62	2.53
3000	2.04	1.85	3.05
STANDARD SIZES
18" x 18", 17" x 36", 18.5" x 36", 24" x 36", 24" x 48". Sizes up to 72" lengths are available upon request.
CNC MACHINING
CNC machined shapes from standard size blocks are available upon request.
TECHNICAL SUPPORT AND CUSTOM FORMULATIONS FOR USE TEMPERATURES UP TO 3000°F
Technical support for refractory and heat transfer solutions are available free of charge upon request. Custom formulations, coatings, and adhesives are available for use at temperatures up to 3000°F.
Download PDF of Spec Sheet