High-Purity Alumina Ceramic Crucibles, Boats & Components
Ceramic Crucibles, Boats & High-Temperature Alumina Parts
Engineered for Precision, Durability, and Extreme Heat Resistance
Product Description
Gotrays Graphite specializes in the production of high-performance alumina ceramic products, including:
Porcelain crucibles (Al₂O₃ content: 95%–99.7%)
Corundum ceramic boats
Insulating components
Ceramic rods and wear-resistant parts
Custom-shaped high-temperature ceramic components
These products are designed for applications that require superior thermal stability, corrosion resistance, and mechanical strength, making them ideal for industrial firing, melting, analysis, and high-temperature insulation.
Applications
Our alumina ceramic products are widely used across industries such as:
Thermocouple temperature sensing systems
Continuous temperature monitoring in molten steel
Petrochemical processing and catalyst support
Textile and spinning machinery components
Electric and electronic instrumentation
Military-grade heat-resistant components
High-temperature laboratory and industrial furnaces
Chemical and materials analysis (coal, glass, metal)
Specifically, porcelain crucibles and corundum boats are frequently used as containers for:
Sample analysis and material testing
Metal melting and alloy development
Firing of chemical and glass raw materials
Advantages & Product Features
✅ High-purity alumina content: 95%–99.7%
✅ Maximum working temperature: up to 1800°C
✅ Capacity range: from 2ml to 10,000ml
✅ Customizable shapes and sizes available upon request
✅ Excellent chemical resistance to acids, alkalis, and molten metals
✅ Long service life under cyclic thermal stress
Why Choose Gotrays Ceramic Products?
Advanced forming and sintering technology
Tight dimensional tolerance and consistent batch quality
Support for OEM/ODM orders with technical drawings
Fast delivery for standard and custom orders
Trusted by customers in Europe, Asia, Middle East, and North America
|
ltem |
99% alumina |
99.5% alumina |
99.7% alumina |
|
Compactness |
dense |
dense |
dense |
|
Water Absorption, % |
o |
o |
0 |
|
Gas Permeability |
gas tight |
gas tight |
gas tight |
|
Color |
ivory, pink |
ivory |
ivory |
|
Hardness,Mohs |
9 |
g |
9 |
|
Max working temp,c |
1750 |
1800 |
1800 |
|
Long-term working temp , sc |
1600 |
1650 |
1660 |
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