Corten steel is 70% stronger than mild steel, corten develops a fine grained protective rust patina over time, compared to mild steel which quickly corrodes with pitting, large blisters and flakes .
Mild steel rust vs genuine corten steel rust example
Only corten steel is used in the manufacture of shipping containers, where durability and high strength are needed
Thin mild steel alternatives are no match for genuine corten steel when longevity and corrosion resistance are required