China High Purity Heat Resistance Al2O3 Aluminum Ceramic Casting Crucible

Products Description
Corundum ceramic crucible, also known as alumina crucible, 99.70% corundum crucible in 1800ºC1650ºC- 1700ºC corundum ceramic 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 1700ºC.Short-term maximum service temperature 1800ºC. 99.35% Corundum ceramic crucible has good high temperature insulation and mechanical strength in oxidation and reduction atmosphere

Feature
1. High purity: Al2O3>99%, good chemical corrosion resistance
2, good temperature resistance, long-term use at 1600ºC, short-term 1800ºC
3 . Corundum ceramic aluminum crucible is suitable for melting samples with anhydrous Na2CO3 and other weak alkaline substances as flux, but not suitable for melting samples with Na2O2, NaOH and other strong alkaline substances and acidic substances as flux (such as K2S2O7 and so on)

Technical Parameters
Item
Unit
Corundum Material
Al2O3 Content
%
99.3
SiO2 Content
%
-
Density
g /cm3
3.88
Water Absorption
%
0.01
Compression Strength at Room Temperature
MPa
350
Leakage Rate 20ºC
Torr/ L. Sec
<10-11
Bending Strength
mm
≤0.2mm 1600ºC
Bonding at High Temperature
-
No Bonding 1600ºC
Thermal Expansion Coefficient 20-1000ºC
mm. 10-6/ºC. m
8.2
Thermal Conductivity
W/ m. k
25
Electric Insulation Strength
KV/ mm
20
DC Insulation Resistance 20ºC
Ohm/ cm
1014
High Temperature Insulation Resistance
1000ºC MΩ
≥0.08
1300ºC MΩ
≥0.02
Resistance To Thermal Shock
-
No Cracks 1550ºC for 4 times
Max. Temperature
ºC
1800

Company Information
Henan Synthe Corporation adhering more than a decade of manufacturing and promotion experience of superhard furnace, works on manufacturing and selling of Aludum ceramic crucible, Aludum ceramic tube, Aludum ceramic balls and Muffle Furnace, Dental Furnace, Tube Furnace, Vacuum Furnace, CVD/PCEVD Furnace and Heat Treatment Furnace. We continuously provides high efficient solutions and excellent after-sale service. We have advanced efficient manufacturing technology and excellent team, Looking forward to cooperating with you. Thank you.