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CeramTec Rubalit® 708S Alumina, 96%

Category	Ceramic , Oxide , Aluminum 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 Rubalit® 708S Alumina, 96%.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

Rubalit® 708S (96%) is an alumina that features high strength and thermal conductivity. It provides outstanding results when used on commercially available thick-film pastes and metallization systems.

Physical Properties	Metric	English	Comments
Density	3.78 g/cc	0.137 lb/in³	DIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption	0.00 %	0.00 %	DIN EN 623-2 / ASTM-C373
Particle Size	3.0 - 5.0 µm	3.0 - 5.0 µm	Median Grain (d50)

Mechanical Properties	Metric	English	Comments
Tensile Modulus	340 GPa	49300 ksi	Young's; DINV ENV 843-2 / ASTM-F417
Flexural Strength	400 MPa	58000 psi	Bending Strength; 4-Point Method (40x4x3 mm³); ASTM-F417
	500 MPa	72500 psi	Bending Strength; Dual Ring Method (0.63 mm Substrate Thickness); DIN 52292

Thermal Properties	Metric	English	Comments
CTE, linear	6.80 µm/m-°C @Temperature 20.0 - 200 °C	3.78 µin/in-°F @Temperature 68.0 - 392 °F
	7.30 µm/m-°C @Temperature 20.0 - 600 °C	4.06 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	0.800 J/g-°C @Temperature 100 - 200 °C	0.191 BTU/lb-°F @Temperature 212 - 392 °F	DINV ENV 821-3
Thermal Conductivity	24.0 W/m-K	167 BTU-in/hr-ft²-°F	DIN EN 821-2 / ASTM-C408

Component Elements Properties	Metric	English	Comments
Al2O3	96 %	96 %

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+8 ohm-cm @Temperature 900 °C	1.00e+8 ohm-cm @Temperature 1650 °F
	1.00e+12 ohm-cm @Temperature 500 °C	1.00e+12 ohm-cm @Temperature 932 °F
	1.00e+13 ohm-cm @Temperature 25.0 °C	1.00e+13 ohm-cm @Temperature 77.0 °F	ASTM-D257
Dielectric Constant	9.8 @Frequency 1.00e+6 Hz	9.8 @Frequency 1.00e+6 Hz	IEC 672-1 / ASTM-C150
	10 @Frequency 1.00e+9 Hz	10 @Frequency 1.00e+9 Hz	IEC 672-1 / ASTM-C150
Dielectric Breakdown	7000 V @Thickness 0.250 mm	7000 V @Thickness 0.00984 in
	12600 V @Thickness 0.630 mm	12600 V @Thickness 0.0248 in
	15000 V @Thickness 1.00 mm	15000 V @Thickness 0.0394 in
Dielectric Loss Index	0.00030 @Frequency 1.00e+6 Hz	0.00030 @Frequency 1.00e+6 Hz	IEC 672-1 / ASTM-D149,150

Descriptive Properties	Value	Comments
Color	White
Ra = Arithmetic Mean Roughness Value (µm)	Profilometer (0.8 mm Cutoff)

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