Botticino Classico Technical data - ASTM standard Absorption (C97) 0.25 Weight% Density (C97) 2.692 Kg/cu.m Compressive strength (C170) 129.5 MPa Modulus of rupture (C99) MPa Flexural strength (C880) 8.2 MPa Abrasion resistance (C241) 37.9 Hardness   close