High Purity Alpha Alumina Documents Product Data Sheets High Purity Alpha Alumina Powder 1 file(s) 34.51 MB Download Now 5N High Purity Alumina Pellets 1 file(s) 646 KB Download Now 5N High Purity Alumina Beads 1 file(s) 39.64 MB Download Now Company Brochure Polar Performance Materials Company Brochure 1 file(s) 10.53 MB Download Now our products 3N to 5N Alpha Alumina PowdersPolar HPA powders have consistent purity, tight particle size distribution, can be customized to improve product performance, and are tailored to improve product yields and repeatability.View Product 5N High Density PelletsPolar higher-density pellets available in a variety of shapes and sizes maximize packing density and reduce micro-bubbles to increase furnace throughput and improves sapphire crystal growth yields.View Product 5N Alumina BeadsOur higher-purity dense alumina beads with consistently low surface area improve process repeatability and increase crystal quality for better continuous sapphire growth processes.View Product