www.fotmacarbide.com provide 99.95% High Purity Forged Molybdenum Products Pure Molybdenum Crucibles for Sapphire Growth Molybdenum crucibles are mainly used in metallurgy industry and mchanism process industry. Molybdenum is a indispensability material in rare earth smelting industry. More and more molybdenum crucibles are used in crystalloid materials, and other burgeoning high technology industry. The characteristics of the molybdenum crucibles The density of the molybdenum crucibles is 10.2g/cm3. Their purity is no less than 99.95%. The outer diameter is 20-214mm and the height is 10-400mm. Under the temperature between 1100ºC and 1700ºC, the molybdenum crucibles can still work. Mostly their surface are polished.