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CeramTec 975 Alumina, 99.5%

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 975 Alumina, 99.5%.pdf
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Material Notes:
975 (99.5%) offers unique technology by virtue of its optimal dispersion of the MgO phase with the alumina grains. With virtually no transgranular porosity in its microstructure, 975 exhibits high density, superior wear resistance, and moderate flexural strength. Another advantage is its highly uniform white color compared to conventional 99.5% aluminas. The material’s white color remains consistent under either reducing or oxidizing conditions. It can be used for ballistic protection and ceramic armor.
Physical Properties Metric English Comments
Density 3.90 g/cc
0.141 lb/in³
DIN EN 623-2 / ASTM-C373 / ASTM-C20
Water Absorption 0.00 %
0.00 %
DIN EN 623-2 / ASTM-C373
Particle Size 2.0 - 3.0 µm
2.0 - 3.0 µm
Median Grain (d50)
Mechanical Properties Metric English Comments
Vickers Microhardness 1700
1700
HV 0.5; DINV ENV 843-4
Tensile Strength at Break 172 MPa
24900 psi
ACMA Test #4 / DIN EN 843-1
Tensile Modulus 380 GPa
55100 ksi
Young's; DINV ENV 843-2 / ASTM-F417
Flexural Strength 310 MPa
45000 psi
20 x 40 mm
Compressive Strength 2400 MPa
348000 psi
ASTM C-773-88 / DIN 51067T1
Poissons Ratio 0.30
0.30
DINV ENV 843-2
Fracture Toughness 4.00 MPa-m½
3.64 ksi-in½
DIN 51109
Shear Modulus 131 GPa
19000 ksi
Thermal Properties Metric English Comments
CTE, linear 7.30 µm/m-°C
4.06 µin/in-°F
DIN EN 821-1
5.60 µm/m-°C

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

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

@Temperature 20.0 - 600 °C
3.89 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 0.900 J/g-°C

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

@Temperature 212 - 392 °F
DINV ENV 821-3
Thermal Conductivity 35.4 W/m-K
246 BTU-in/hr-ft²-°F
DIN EN 821-2 / ASTM-C408
Maximum Service Temperature, Air 1530 °C
2790 °F
Component Elements Properties Metric English Comments
Al2O3 99.5 %
99.5 %
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+14 ohm-cm
>= 1.00e+14 ohm-cm
ASTM-D257
Dielectric Constant 10

@Frequency 1.00e+6 Hz
10

@Frequency 1.00e+6 Hz
IEC 672-1 / ASTM-C150
Dielectric Strength 7.874 kV/mm
200.0 kV/in
6.35 mm (1/4") IEC 672-1
Dissipation Factor 0.00010

@Frequency 1.00e+6 Hz
0.00010

@Frequency 1.00e+6 Hz
Dielectric Loss Index 0.0010

@Frequency 1.00e+6 Hz
0.0010

@Frequency 1.00e+6 Hz
IEC 672-1 / ASTM-D149,150
Descriptive Properties Value Comments
Color White
Thermal Shock Resistance R1 (K) 225
Hasselman (Experimental)
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