98%High Temperature Stability Alumina Ceramic Square Crucible

 98% Alumina Ceramic Square Crucible

Rank Parameter Name Common Specification Range  Units
1 Al₂O₃ Purity 95 – 99.8 %
2 Maximum Operating Temperature 1600–2000
3 Volume / Capacity 0.5  – 1000  mL
4 Shape Cylindrical, square, with/without lid, conical bottom, flat bottom, etc.
5 Thermal Shock Resistance Good / Medium / Poor 
6 Density / Bulk Density 3.6–3.9   g/cm³
7 Porosity / Open Porosity ≤1 %
8 Dimensional Tolerance / Appearance Precision ±0.5~±2 %

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Alumina Ceramic Crucible

With over 20 years of specialized production experience, we have mastered mature manufacturing processes and offer a wide range of shapes and capacities (from a few milliliters to several liters). Our crucibles are made from high-purity alumina materials, featuring fully dense, fine-grained structures ideal for various high-temperature environments.

Key Features:

  • High temperature resistance
  • Excellent chemical corrosion resistance
  • Superior thermal shock resistance (resistant to rapid heating/cooling without cracking)
  • High-density forming for durability

Main Applications:

  • Laboratory analysis and testing (e.g., TGA, DSC thermal analysis)
  • Metal melting and processing
  • Molten glass experiments
  • Gemstone/jewelry industry purification and refining
  • Rapid high-temperature thermal cycling
  • Other high-temperature chemical reactions and material synthesis

Crucible Types:

  1. Arc-shaped (Arc) alumina crucible
  2. Square alumina crucible
  3. Rectangular alumina crucible
  4. Cylindrical alumina crucible
  5. Boat-shaped (Boat) alumina crucible
  6. Other custom irregular shapes

Frequently Asked Questions (FAQ)

1.What is the maximum operating temperature?

Long-term use up to 1600°C; short-term exposure up to 1750–1800°C, depending on heating rate, holding time, and sample properties.

2.Can the crucible be reused? How should it be cleaned?

Yes, it is designed for repeated use. Recommended cleaning methods include ultrasonic cleaning or mild acid washing (verify acid compatibility with the material). Ensure no residues remain to avoid affecting future experiments

3.Is it compatible with TGA and DSC instruments?

Absolutely. High-purity alumina crucibles are the industry standard for TGA and widely used in DSC due to their excellent thermal stability and minimal sample interaction.

Additional information

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