The corrosion current density on a large steel tank, which holds a corrosive aqueous solution, is measured at 1 A/m2 . The approximate rule that 1 A/m2 is equivalent to 1 mm of corrosion depth/year,...

The corrosion current density on a large steel tank, which holds a corrosive

aqueous solution, is measured at 1 A/m2

. The approximate rule that 1 A/m2 is

equivalent to 1 mm of corrosion depth/year, the lifetime of the tank is calculated at five years with a 5 mm wall thickness allowance for corrosion. Is this

calculation a reliable guide to the useful life of the tank? Give reasons.