Mechanical specification (Sahara royal) Hardness(mohs)4 Unit volume weight(gr/cm3): 2, 65 Water absorbtion (volume %): 1 Compressive strength(kgf/cm2): 1780 Strength after freezing(kgf/cm2): 1990 Strength to blow(kgf cm/cm3): 19 Strength to bending(kgf/cm2): 184 Strength to corrosion(cm3/50 cm2): 14, 5 Porosity(%): 2, 1 Chemical analysis (Sahara royal light) Sio2(%):1, 15 Al2o3(%):
