Porous Steatite (IEC 60672 Type C-230)
C-230 steatite is a grade of steatite. The graph bars on the material properties cards below compare C-230 steatite to other oxide-based engineering ceramics (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Thermal Properties
Maximum Temperature: Mechanical
1200 °C 2190 °F
Maximum Thermal Shock
100 °C 210 °F
Specific Heat Capacity
850 J/kg-K 0.2 BTU/lb-°F
Thermal Conductivity
1.8 W/m-K 1.0 BTU/h-ft-°F
Thermal Expansion
9.0 µm/m-K
Electrical Properties
Dielectric Constant (Relative Permittivity) At 1 MHz
6.5
Dielectric Strength (Breakdown Potential)
7.9 kV/mm 0.31 V/mil
Electrical Resistivity Order of Magnitude
11 10x Ω-m
Other Material Properties
Density
1.9 g/cm3 120 lb/ft3
Elastic (Young's, Tensile) Modulus
110 GPa 16 x 106 psi
Flexural Strength
32 MPa 4.6 x 103 psi
Tensile Strength: Ultimate (UTS)
220 MPa 32 x 103 psi
Common Calculations
Stiffness to Weight: Axial
32 points
Stiffness to Weight: Bending
83 points
Strength to Weight: Axial
32 points
Strength to Weight: Bending
42 points
Thermal Diffusivity
1.1 mm2/s
Thermal Shock Resistance
16 points
Followup Questions
Further Reading
ASTM C242: Standard Terminology of Ceramic Whitewares and Related Products
Ceramics and Composites: Processing Methods, Narottam P. Bansal and Aldo R. Boccaccini (editors), 2012
IEC 60672-3: Ceramic and glass-insulating materials - Part 3: Specifications for individual materials
Springer Handbook of Condensed Matter and Materials Data, W. Martienssen and H. Warlimont (editors), 2005
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015