Properties of common materials

Material Unit weight
(kN/m3)		 Density
(kg/m3)		 Specific
Gravity
Aluminum 26.095 2660 2.66
Brass 81.423 8300 8.3
Brick 19.62 2000 2.0
Cast iron 70.632 7200 7.2
Concrete 23.544 2400 2.4
Copper 87.407 8910 8.91
Earth (dry) 12.557 1280 1.28
Earth (wet) 17.266 1760 1.76
Glass 25.408 2590 2.59
Ice 8.829 900 0.9
Lead 111.540 11,370 11.37
Mercury 133.416 13,600 13.6
Oil 8.829 900 0.9
Water (fresh) 9.81 1000 1.0
Water (sea) 10.104 1030 1.03
Wood (hard) 7.848 800 0.8
Wood (soft) 4.709 480 0.48