How can corten steel last when it rusts? – byJEMA
It has no effect on the durability of the corten steel. Here it is also important to note that rust is 7 times thicker than the original steel. 2 mm corten steel thus becomes 14 mm rust. This means that 0.3mm of rust comes off in 2.1mm flakes, which can make it look worse than it is. The flakes won't go away (unless they break off) and they ...