The Ceruna material is developed to save a strong point of Long life of Ruby and improve low toughness properties. The Nano grain of ZrO2 is used and it is showing a higher hardness and toughness properties than Ceramic capillary.

Feature Long life, Good chemical resistance
Composition Al2O3 + ZrO2 + Cr2O3 + a
Density(g/㎤) 4.20
Relative Density(%) 99.60
Hardness(MPa) 1,980
Grain size(㎛) 1 >
Toughness(Mpa.m^0.5) 4.50