... granite is non-metallic material, so it has no magnetic response, no plastic deformation. The hardness is of 2-3 ... deformed.c, Acid, alkali, corrosion resistance, anti-magnetic.d, No damp rust, using and maintenance are easy. Linear expansion coefficient, ... promotion of our products , please according to the real product, no other explanation.SpecificationLength × Width × Thickness (mm)Weight (kgs) ...