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Alumina ceramic (99.8% alumina)

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Alumina ceramic ( 99.8% AL2O3)
Chemical composition: 99.8% AL2O3
Property Value in metric unit Value in US unit
Density 3.89 *10³ kg/m³ 242.8 lb/ft³
Modulus of elasticity 375 GPa 54400 ksi
Flexural strength 410 MPa 59500 psi
Compressive strength 2340 MPa 340000 psi
Fracture toughness 4 MPa*m½ 4 MPa*m½
Hardness 1440 HV 1440 HV
Thermal expansion (20 ºC) 7.9*10-6 ºCˉ¹ 4.4*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 1700 ºC 3090 ºF
Dielectric strength (DC) 9.8 KV/mm 250 V/mil
Dielectric constant (1MHz) 9.7 - 9.7 -

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alumina_ceramic_99.8_alumina.txt · Last modified: 2012/10/06 by dmitri_kopeliovich
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