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CeramTec Rubalit® A 1999.5 Alumina, 99.7%

Category Ceramic , Oxide , Aluminum 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 Rubalit® A 1999.5 Alumina, 99.7%.pdf
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Material Notes:
Rubalit® A 1999.5 (99.7%) is mechanically stronger, features a higher heat conductivity, and is more corrosion resistant than other aluminas. This high-purity aluminum oxide ceramic with carbon materials is especially suitable for plain bearings and seal rings.
Physical Properties Metric English Comments
Density 3.88 g/cc
0.140 lb/in³
DIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption 0.00 %
0.00 %
DIN EN 623-2 / ASTM-C373
Permeability 0.00
0.00
Gas
Weibull Modulus >= 13
>= 13
DINV ENV 843-5
Mechanical Properties Metric English Comments
Vickers Microhardness 1600
1600
HV 0.5; DINV ENV 843-4
Tensile Strength at Break 380 MPa
55100 psi
ACMA Test #4 / DIN EN 843-1
Tensile Modulus 350 GPa
50800 ksi
Young's; DINV ENV 843-2 / ASTM-F417
Flexural Strength 380 MPa
55100 psi
DIN EN 843-1
400 MPa
58000 psi
Bending Strength; 4-Point Method (40x4x3 mm³); ASTM-F417
Compressive Strength 4000 MPa
580000 psi
ASTM C-773-88 / DIN 51067T1
Poissons Ratio 0.23
0.23
DINV ENV 843-2
Fracture Toughness 4.00 MPa-m½
3.64 ksi-in½
DIN 51109
Shear Modulus 142 GPa
20600 ksi
Calculated
Thermal Properties Metric English Comments
CTE, linear 7.50 µm/m-°C

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

@Temperature 68.0 - 392 °F
DIN EN 821-1
7.50 µm/m-°C

@Temperature 20.0 - 400 °C
4.17 µin/in-°F

@Temperature 68.0 - 752 °F
DIN EN 821-1
7.50 µm/m-°C

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

@Temperature 68.0 - 1110 °F
DIN EN 821-1
8.50 µm/m-°C

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

@Temperature 68.0 - 1830 °F
DIN EN 821-1
Specific Heat Capacity 0.900 J/g-°C

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

@Temperature 212 - 392 °F
DINV ENV 821-3
Thermal Conductivity 30.0 W/m-K
208 BTU-in/hr-ft²-°F
DIN EN 821-2 / ASTM-C408
Maximum Service Temperature, Air 1400 °C
2550 °F
Maximum Service Temperature, Inert 1400 °C
2550 °F
Component Elements Properties Metric English Comments
Al2O3 99.7 %
99.7 %
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+7 ohm-cm

@Temperature 800 °C
>= 1.00e+7 ohm-cm

@Temperature 1470 °F
IEC 672-1
>= 1.00e+12 ohm-cm

@Temperature 400 °C
>= 1.00e+12 ohm-cm

@Temperature 752 °F
IEC 672-1
>= 1.00e+15 ohm-cm

@Temperature 20.0 °C
>= 1.00e+15 ohm-cm

@Temperature 68.0 °F
IEC 672-1
Dielectric Constant 10

@Frequency 1.00e+7 Hz
10

@Frequency 1.00e+7 Hz
IEC 672-1 / ASTM-C150
Dielectric Strength 30.0 kV/mm
762 kV/in
6.35 mm (1/4") IEC 672-1
Dielectric Loss Index 0.00050

@Frequency 1.00e+6 Hz
0.00050

@Frequency 1.00e+6 Hz
IEC 672-1 / ASTM-D149,150
Descriptive Properties Value Comments
Ra = Arithmetic Mean Roughness Value (µm) Profilometer (0.8 mm Cutoff)
Surface Contact Area (%) 80-95
Thermal Shock Resistance R1 (K) 150
Hasselman (Experimental)
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