Sapphire crystal is the hardest oxide crystal, is the basic single crystal form of aluminum oxide (Al2O3). It has a series of excellent physical and chemical characteristics such as high strength, ...
Renowned for its exceptional hardness and durability, Sapphire (Alâ‚‚O₃) stands as a premier material in the realm of optical components, surpassed only by diamond. Its impressive HK1370kg/mm² hardness ...
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