Al2O3 Melting Refractory Alumina Ceramic Crucibles

Customized Alumina Ceramic CrucibleFeatures:
1, High purity: Al2O3> 99%, good chemical corrosion resistance
2, Good temperature endurance, long-term use at 1600 °C, 1800 °C short-term
3, Good rapid thermal shock resistance, not easy to burst
4 , Slip Casting with high densityProduct Description:
Arc Straight alumina ceramic crucibles' basic functions:
Name: straight alumina crucibles
Chemical Composition
Al2O3 ≥ 99
R2O ≤ 0.2
Fe2O3 ≤ 0.1
SiO2 ≤ 0.2
Volume density (g/cm2) ≥ 3.80
Apparent porosity (%) <1
Bending strength (Mpa)> 350
Compressive strength (Mpa)> 12000
Dielectric constant Σ (1MHz) 2
The highest operation temperature (°C) 1800
Best roast container for making powder TV, rare earth materials, precious metals, and roasting high, medium and low ceramic capacitors, NTC, PTC piezoelectric ceramic and lithium cobalt oxide, lithium manganese oxide powder.MaterialUnitSteatite95% alumina ceramics99.5% alumina ceramicsDensityG/cm32.73.653.85Highest application temperature°C110015001800Bending strengthMpa150300340Compressive strengthMpa90034003600HardnessHV0.580018002000Insulation breakdown strengthKV/mm101518Processing technologyProcess range(mm)Outside Diameter1-300Inside Diameter0.5-300Length0.5-1200Accuracy of working(mm)Perpendicularity0.01Concentricity0.01Roundness0.005Straightness0.005Parallelism0.01Planeness0.005Roughness0.05Fit clearance0.005