Hardness evaluates a cloth's ability to resist mechanical dress in and abrasion. Alumina ceramics surpass metal and tungsten carbide instruments in hardness. Within the Rockwell hardness scale, alumina ceramics range from HRA80-90, placing them slightly below diamonds and previously mentioned stainless steel. Producers of medical components are intrigued by Macor® https://billj543wla0.dgbloggers.com/profile