White fused alumina—almost as hard as a diamond

White fused alumina is a synthetic product that is created by melting high-grade aluminium oxide in an electric arcing process—accordingly the proportion of aluminium oxide is over 99%. Besides the transparency, an excellent property of white fused alumina is the extraordinarily high degree of hardness—only diamonds are harder. This high degree of hardness is a challenge for any milling process. Our SEPASIL^® micronized white fused alumina powders are characterized by a customized steep grading curve. The last refining operation is a surface modification that is matched specifically to the respective application.