Chromium is added to steel to impart strength and shine. If the density of chromium is 5.24g/cm3 then expression in S.I. unit (kg/m3) is:
5240
5.24
0.524
52400
1kg = 1000g and 1m3 = 106cm3
5.24 g/cm3 = (5.24 x 10-3 Kg)/10-6m3 = 5240 Kg/m3.