http://www.stonebtb.com/product/silver-pearl-building-11953.shtml Specific gravity: 27, 7 kN / m3 ASTM C97-47 DIN 52102 Crushing strength: 166-227 N / mm2 ASTMC 170-50 DIN 52105 Tensile strength: 12-14, 5 N / mm2 ASTMC 99-52 DIN 52112 Wear at 2000 rpm: 2, 2-2, 4 mm ASTM 1242-56 Thermal expansion coefficient: 5, 6 Water absorption % weight: 0, 09 %-weight ASTM C97-47 DIN 52103