Ceramic Fiber Bulks

Physical Properties Kaowool® Kaowool HP Cerafiber® Cerachem® Cerachrome®
Color Off White White White White Blue/Green
Continuous Use Temp, °F (°C) 30 33 33 34 39
Classification Temp, °F (°C) 30 33 33 34 39
Specific Heat, BTU/lb•°F @ 1800°F (kJ/kg•°C @ 982°C) 0.26 (1.08)
Fiber Length, in (mm) ½ - 4 (13-100) ½ - 10 (13-250)
Chemical Analysis, %, Weight Basis After Firing
Alumina, Al2O3 45 46 46 35 43
Silica, SiO2 50 - 55 54 54 50 54
Zirconia, ZrO2 - - - 15 -
Ferric oxide, Fe2O3 1.0 - - - -
Titanium oxide, TiO2 2.2 - - - -
Alkalis (NaO2+K2O) 0.2 - - - -
Other - trace trace trace 3
Leachable chlorides 1 - 2 trace trace trace trace
Availability and Packaging
Grade Typical Fiber Index Fiber Length Lubrication
Kaowool BN 45-55% 4 in (100mm) No
D 45-55% 4 in (100mm) No
A 45-55% 4 in (100mm) Yes
HM-12 50% ½ in (13mm) No
HM-25 50% 1 in (25mm) No
HM-50 50% 2 in (50mm) No
Kaowool HP HY 45-55% ½ in (13mm) No
HA 45-55% ½ in (13mm) No
A 45-55% 4 in (100mm) Yes
Cerafiber, Cerachem, Cerachrome 111 45-55% up to 10 in (250mm) Yes
112 45-55% up to 10 in (250mm) No
HM-12 50% ½ in (13mm) No
HM-25 50% 1 in (25mm) No
HM-50 50% 2 in (50mm) No
Engineered Fibers Various 60-90% Various No