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CeramTec 645 Steatite (MgO-SiO2)

Category Ceramic , Oxide , Magnesium Oxide , Silicon Oxide
Manufacturer CeramTec North America
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CeramTec 645 Steatite (MgO-SiO2).pdf
Price EMAIL US    sales@lookpolymers.com
  Online Service   lookpolymers   27660005
Material Notes:
Te value is 810°C. Hasselman Thermal Shock value is 600 K.Data provided by CeramTec North America.
Physical Properties Metric English Comments
Density 2.70 g/cc
0.0975 lb/in³
Water Absorption 0.00 %
0.00 %
Mechanical Properties Metric English Comments
Vickers Microhardness 450
450
HV 0.5
Tensile Strength, Ultimate 61.9 MPa
8980 psi
ACMA Test #4
Modulus of Elasticity 107 GPa
15500 ksi
Ultrasonic
Flexural Strength 131 MPa
19000 psi
20 x 40 mm
Compressive Strength 585 MPa
84800 psi
ASTM C773-88
Poissons Ratio 0.23
0.23
ASTM C-1 259-94
Shear Modulus 44.0 GPa
6380 ksi
Ultrasonic
Thermal Properties Metric English Comments
CTE, linear 8.20 µm/m-°C

@Temperature 25.0 - 300 °C
 4.56 µin/in-°F

@Temperature 77.0 - 572 °F
8.90 µm/m-°C

@Temperature 25.0 - 700 °C
 4.94 µin/in-°F

@Temperature 77.0 - 1290 °F
9.40 µm/m-°C

@Temperature 25.0 - 1001 °C
 5.22 µin/in-°F

@Temperature 77.0 - 1834 °F
Specific Heat Capacity 1.10 J/g-°C
0.263 BTU/lb-°F
Thermal Conductivity 5.50 W/m-K
38.2 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 1000 °C
1830 °F
Electrical Properties Metric English Comments
Electrical Resistivity 4.00e+6 ohm-cm

@Temperature 700 °C
 4.00e+6 ohm-cm

@Temperature 1290 °F
>= 1.00e+14 ohm-cm

@Temperature 25.0 °C
 >= 1.00e+14 ohm-cm

@Temperature 77.0 °F
Dielectric Constant 5.8

@Frequency 1e+6 Hz
 5.8

@Frequency 1e+6 Hz
Dielectric Strength 8.268 kV/mm

@Thickness 6.35 mm
 210.0 kV/in

@Thickness 0.250 in
Dissipation Factor 0.0019

@Frequency 1e+6 Hz
 0.0019

@Frequency 1e+6 Hz
0.0021

@Frequency 60 Hz
 0.0021

@Frequency 60 Hz
Dielectric Loss Index 0.011
0.011
1 MHz; 20°C
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