Hardness evaluates a fabric's ability to resist mechanical don and abrasion. Alumina ceramics surpass metal and tungsten carbide instruments in hardness. Over the Rockwell hardness scale, alumina ceramics vary from HRA80-ninety, positioning them just below diamonds and over chrome steel. Alumina may be machined in green, biscuit, or fully dense https://alumina-ceramics12233.worldblogged.com/40506046/alumina-ceramics-an-overview