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CeramTec 665 Steatite, MgO•SiO2

Category Ceramic , Oxide , Magnesium Oxide , Silicon Oxide
Manufacturer CeramTec North America
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CeramTec 665 Steatite, MgO•SiO2.pdf
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Material Notes:
Steatites used in place of aluminas are a cost-effective way to meet performance requirements. They are easier to form and fire at lower temperatures. 665 L533C has low dielectric loss. It makes excellent insulators for radio frequency applications.
Physical Properties Metric English Comments
Density 2.80 g/cc
0.101 lb/in³
DIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption 0.00 %
0.00 %
DIN EN 623-2 / ASTM-C373
Mechanical Properties Metric English Comments
Vickers Microhardness 420
420
HV 0.5; DINV ENV 843-4
Tensile Strength at Break 68.8 MPa
9980 psi
ACMA Test #4 / DIN EN 843-1
Tensile Modulus 117 GPa
17000 ksi
Young's; DINV ENV 843-2 / ASTM-F417
Flexural Strength 145 MPa
21000 psi
20 x 40 mm
Compressive Strength 619 MPa
89800 psi
ASTM C-773-88 / DIN 51067T1
Poissons Ratio 0.25
0.25
DINV ENV 843-2
Shear Modulus 45.0 GPa
6530 ksi
Thermal Properties Metric English Comments
CTE, linear 6.90 µm/m-°C

@Temperature 20.0 - 200 °C
3.83 µin/in-°F

@Temperature 68.0 - 392 °F
7.80 µm/m-°C

@Temperature 20.0 - 600 °C
4.33 µin/in-°F

@Temperature 68.0 - 1110 °F
ASTM-C373
8.00 µm/m-°C

@Temperature 20.0 - 1000 °C
4.44 µin/in-°F

@Temperature 68.0 - 1830 °F
Specific Heat Capacity 1.10 J/g-°C

@Temperature 100 - 200 °C
0.263 BTU/lb-°F

@Temperature 212 - 392 °F
DINV ENV 821-3
Thermal Conductivity 5.90 W/m-K
40.9 BTU-in/hr-ft²-°F
DIN EN 821-2 / ASTM-C408
Maximum Service Temperature, Air 1000 °C
1830 °F
Electrical Properties Metric English Comments
Volume Resistivity 800000 ohm-cm

@Temperature 900 °C
800000 ohm-cm

@Temperature 1650 °F
3.00e+8 ohm-cm

@Temperature 500 °C
3.00e+8 ohm-cm

@Temperature 932 °F
>= 1.00e+14 ohm-cm

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

@Temperature 77.0 °F
ASTM-D257
1.00e+14 ohm-cm

@Temperature 100 °C
1.00e+14 ohm-cm

@Temperature 212 °F
IEC 672-1
Dielectric Constant 6.1

@Frequency 1.00e+6 Hz
6.1

@Frequency 1.00e+6 Hz
IEC 672-1 / ASTM-C150
Dielectric Strength 9.055 kV/mm
230.0 kV/in
6.35 mm (1/4") IEC 672-1
Dissipation Factor 0.00080

@Frequency 1.00e+6 Hz
0.00080

@Frequency 1.00e+6 Hz
0.0020

@Frequency 1.00e+10 Hz
0.0020

@Frequency 1.00e+10 Hz
Dielectric Loss Index 0.0050

@Frequency 1.00e+6 Hz
0.0050

@Frequency 1.00e+6 Hz
IEC 672-1 / ASTM-D149,150
Descriptive Properties Value Comments
Color Buff
Te Value (°C) 870
Thermal Shock Resistance R1 (K) 650
Hasselman (Experimental)
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