99% Alumina Ceramic Crucible - Cylindrical Corundum Crucible for High-Temperature Experiments, 2pcs(60x80mm/160ml)

<;0.07%, Hardness 86, Flexural Strength 350MPa.CONTROL HEATING/COOLING RATES - Excessive temperature change rates cause cracking! below 1200℃: 4℃/min, above 1200℃: 3℃/min, use power-controlled cooling, avoid rapid cooling by turning off power while hot, as initial furnace cooling is often too fast. (For larger products, use slower rates ≤2℃/min)FIRST USE - Place in a ~105℃ oven for 120 minutes, or follow the process recipe for an initial empty firing to remove moisture/impurities.AVOID DIRECT FLAME / LOCALIZED HEATING - Do not heat directly with gasoline torches, acetylene guns, alcohol lamps, or by with hot objects, uneven heating causes cracking.HIGH TEMPERATURE RESISTANCE - Alumina ceramics has good thermal stability, it can work in high temperature environment for a long time, alumina ceramic high temperature resistance can usually reach more than 1600 ° C, suitable for use in high temperature environment, such as electronic components, heating elements.SPECIFICATION - Size: outer diameter x height, quantity: 2pcs, Aluminum Oxide ≥ 99%, Bulk Density ≥ 3.83 g/cm³, Apparent Porosity < 0.07%, Hardness 86, Flexural Strength 350MPa.

• Exceptional high-temperature resistance up to 1600°C, ideal for electronic components and heating applications.
• Constructed from 99% aluminum oxide with a bulk density of ≥ 3.83 g/cm³, ensuring durability and reliability.
• Includes 2 cylindrical crucibles, devised to withstand controlled heating and cooling rates to prevent cracking.
• First use instructions: Preheat in a 105°C oven for 120 minutes to eliminate moisture and impurities.
• Avoid direct flames and localized heating to maintain structural integrity; use power-controlled cooling for best results.