99 Alumina Corundum Crucibles High-Temperature Resistant

These 99 Alumina Corundum Crucibles are manufactured using a slip-casting process, providing high density, smooth interior and exterior surfaces, and excellent thermal stability. Designed for long-term use at temperatures up to 1600°C, they are ideal for laboratory and industrial high-temperature applications.

Package: 1 piece per pack

Available Sizes

• 800 mL

• 1300 mL

Applications

• Laboratory and industrial analysis of metal and non-metal samples

• High-temperature processing, melting, and thermal testing

• Suitable for use in furnaces and high-temperature environments

Usage Precautions for 99% Alumina Crucibles

1. Pre-drying: Before first use, place the crucible in an oven at approximately 105°C for 2 hours to remove moisture.

2. Avoid Direct Flame: Do not heat directly with gasoline, acetylene, or alcohol torches to prevent cracking from uneven heating.

3. Maintain Distance from Heating Elements: Keep at least 2 cm between the crucible and heating elements (e.g., carbon tubes, SiC rods, heating wires).

4. Controlled Heating/Cooling:

   • Below 1200°C: ≤ 5°C per minute

   • Above 1200°C: ≤ 4°C per minute

   • Use controlled power cooling; avoid sudden shutdown at high temperatures to prevent thermal shock.

5. For Large Crucibles: Avoid direct contact with the furnace floor. Elevate using high-temperature-resistant supports (e.g., corundum plates) to improve air circulation and extend lifespan.