DENSITIES OF COMMON MATERIALS
iron or steel 7850 kg/m3 (490 lbm/ft3)
earth soils 1920 kg/m3 (120 lbm/ft3)
concrete 2400 kg/m3 (150 lbm/ft3)
sea water 1025 kg/m3 (64 lbm/ft3)
water (liquid) 1000 kg/m3 (62. lbm/ft3)
water (solid) 920 kg/m3 (490 lbm/ft3)
mercury 13560 kg/m3 (490 lbm/ft3)