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Alumina ceramic (97.5% alumina)

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Alumina ceramic ( 97.5% AL2O3)
Chemical composition: 97.5% AL2O3
Property Value in metric unit Value in US unit
Density 3.85 *10³ kg/m³ 240.3 lb/ft³
Modulus of elasticity 331 GPa 48000 ksi
Flexural strength 386 MPa 56000 psi
Compressive strength 2070 MPa 300000 psi
Fracture toughness 4.3 MPa*m½ 4.3 MPa*m½
Hardness 1340 HV 1340 HV
Thermal expansion (20 ºC) 7.6*10-6 ºCˉ¹ 4.2*10-6 in/(in* ºF)
Thermal conductivity 35.4 W/(m*K) 245 BTU*in/(hr*ft²*ºF)
Specific heat capacity 880 J/(kg*K) 0.21 BTU/(lb*ºF)
Max. working temperature 1650 ºC 3000 ºF
Dielectric strength (DC) 9.3 KV/mm 235 V/mil
Dielectric constant (1MHz) 9.4 - 9.4 -

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alumina_ceramic_97.5_alumina.txt · Last modified: 2012/10/06 by dmitri_kopeliovich
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