Crucible

$6.00

Corundum ceramic crucible, also known as alumina crucible, 99.70% corundum crucible in 1800℃1650℃- 1700℃ corundum crucible in the atmosphere of oxidation and reduction, has a good high temperature insulation and mechanical strength.High thermal conductivity, small thermal expansion.Does not react with air, water vapor, hydrogen, carbon monoxide and so on above 1700℃. Short-term maximum service temperature 1800℃. 99.35% Corundum ceramic crucible has good high temperature insulation and mechanical strength in oxidation and reduction atmosphere.

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Description

Item Al2O3 Content(%) 99
Heat resistance(℃) 1800
Physical Characteristics Bulk density(g/cm3) 3.9
Water absorption(%) 0
Flexural strength(Mpa) 360
Hardness vickers (Gpa) 15.6
Mechanical Characteristics Elastic modulus (Gpa) 370
Poisson’s ratio 0.23
Linear expansion coefficient(20℃-500℃) 10-6/℃ 8
Thermal Characteristics Thermal conductivity  w/(m.k) 32
Specific Heat  *10-3J/(kg*K) 0.9
Dielectric constant (1MHZ) 9.9
Electrical Characteristics Dielectric loss angle  *10-4 1
Dielectric strength  *106V/m 15