Measurement of Rod mm to kg/m

MKS System:

10 mm = (D^2/162)=(10^2/162)
             =0.616 kg/m
12 mm = 0.888 kg/m
16 mm = 1.579 kg/m
20 mm = 2.466 kg/m
22 mm = 2.983 kg/m
25 mm = 3.854 kg/m