China 99 Alundum Ceramic Alumina Tray Crucible for Muffle Furnace

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.