high purity alumina ceramic crucible

• Alumina ceramic  Crucibles (Special forming process)

The crucibles we currently supply are used in a variety of applications including:-

• Special steels (Inconel and stainless)
• Nickel and cobalt based superalloys (Air and vacuum melting)
• Precious metals

We have a wide range of standard sizes and shapes available and can manufacture custom sizes or crucibles with additional formed features.

Long working time：1800C
Purity: ≥ 99.7% 
Density: 3.85g/cm3 
Compressive Strength: 2500Mpa 
Flexural Strength: 360Mpa 
Thermal Shock: Good

Max service temperature: 1800 C 

1.Introduction:

Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products. We can make the part by hot injection pressing, dry pressing, isostatic pressing and extrusion productive technology etc.

2.Alumina Oxide for Rods & Tubes - Properties:

1) Alumina Oxide offers good thermal conductivity

2) High temperature capabilities

3) High-level strength and stiffness

4) Resistant to strong acid & alkali attack at elevated temperatures

5) Excellent dielectric properties from DC to GHz frequencies

6) High Purity from 94% for metallizable structure, to 99.5% for more demanding high temperature applications.

3.Applications:

Examples of applications for aluminum oxide Al2O3 advanced ceramics are heavy-duty forming tools, substratesand resistor cores in the electronics industry, tiles for wear protection and ballistics, thread guides in textile engineering, seal and regulator discs for water taps and valves, heat-sinks for lighting systems, protection tubes in thermal processes or catalyst carriers for the chemicals industry.