99% Alumina Ceramic Sheets - Double-Sided Smoothing Corundum Crucible Plate for High-Temperature Applications 1pc(100x50x5mm)

<;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)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.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.FIRST USE - Place in a ~105℃ oven for 120 minutes, or follow the process recipe for an initial empty firing to remove moisture/impurities.SPECIFICATION - Size: length x width x height, operating temperature ≤ 1600℃, aluminum oxide ≥ 99%, bulk density ≥ 3.83 g/cm³, apparent porosity < 0.07%, hardness 86, flexural strength 350MPa.

• Premium alumina ceramic sheets with 99% purity, devised for high-temperature applications up to 1600°C.
• Features double-sided smoothing for enhanced performance in experimental setups and heating elements.
• Excellent thermal stability ensures long-lasting use in high-temperature environments, avoiding cracking and damage.
• Controlled heating and cooling rates are essential to prevent thermal shock; recommended rates are 4°C/min below 1200°C and 3°C/min above.
• Initial use requires preheating in a 105°C oven for 120 minutes to eliminate moisture and impurities, ensuring optimal performance.