4specs Discussion Forum: CORTEN
2. Anything used to fasten Corten should be Corten, whether is bolts, rivets, welding rods, or what have you. 3. Regarding the corrosive soils, it was our understanding at the time, that corrosion (rust) was the friend of Corten. The molecular make-up of the rust was so dense that it formed a protective coating over the steel inside. However ...