99% Alumina Flanged Cylindrical Crucible with Lid 180 mL

99% Alumina Flanged Cylindrical Crucible with Lid 180 mL
This high-purity alumina flanged cylindrical crucible with lid is precisely manufactured through a slip-casting process, ensuring high density, smooth interior and exterior surfaces, and excellent thermal stability. Designed for long-term use at temperatures up to 1600°C, it provides outstanding resistance to corrosion, wear, and chemical attack in high-temperature environments.

Package: 1 piece per pack

Specifications

• Product Name: Cylindrical Flanged Crucible with Lid

• Material: 99% Alumina (Al₂O₃)

• Capacity: 180 mL

• Outer Dimensions (D × H): 70 × 70 mm

• Wall Thickness: 5 mm

• Flange Diameter: 80 mm

• Lid Dimensions: D80 × H5 mm

• Manufacturing Process: Slip Casting

• Firing Temperature: 1800°C

• Operating Temperature: 1600°C

Applications

Ideal for melting, calcination, and analysis of metal and non-metal samples in laboratory and industrial settings. Commonly used in material analysis, thermal processing, and research applications that demand high-purity and temperature stability.

Usage Precautions for 99% Alumina Crucibles

1. Pre-drying: Before first use, heat 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 torches, acetylene torches, or alcohol lamps, as uneven heating may cause cracking.

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. Control Heating/Cooling Rate:

   • Below 1200°C: ≤ 5°C per minute

   • Above 1200°C: ≤ 4°C per minute

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

5. For Large Crucibles: Avoid direct contact with the furnace floor. Place the crucible on high-temperature-resistant supports (e.g., corundum plates) to enhance air convection and extend service life.