Custom Steatite and Cordierite Ceramic Parts & Insulators

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Material Specifactions

Material Specifications

Chemical Composition
Steatite
Cordierite
SiO2
62 - 63 %
51 %
AlO3
7 - 8 %
33 %
Fe2O3
.77 - 0.80 %
2.1 %
FiO2
1.0 %
0.5 %
CaO
2.0 %
1.4 %
Na2O
1.5 %
-
MgO
19.5 %
10.1 %
K2O
1 - 2 %
-

Mechanical Properties
Steatite
Cordierite
Color
Off White
Brown / Yellow
Water Absorption
0
0
Density
2.6
2.0
Compressive Strength N/mm2
900
320
Tensile Strength N/mm2
50
-
Flexural Strength N/mm2
130
65
Coefficient of Thermal Expansion
8 x106
.6 x106/K
Thermal Conductivity w/m0K
2.5
1.8
Safe Use Temperature
1000oc
1000oc

Electrical Properties
Steatite
Cordierite
Loss Factor
.014
.022
Dielectric Strength
11kv/mm
5kv/mm
Volume Resistivity 20oc
1x1013
1x1012