Corten steel, also known as weathering steel, is the primary material in shipping containers. The corrugated walls, frame, cargo doors, and cross members are all made from corten steel. Container manufactures use corten steel because it possesses physical properties that make it weldable and rust-resistant.
A shipping container is a special, non corrosive Corten steel; then, when coated with the Ceramic coating, it becomes virtually rust proof and also prevents mildew, mold and is highly antiseptic. There will be no rust problems if you use an ISBUA Certified Member to build your home or advise you.
A typical ISO shipping container is made from a 'weathering steel' as specified within BS EN 10025-5:2004. This is commonly known as 'Cor-ten' steel. Cor-ten steel is a corrosion resistant steel that is used within many industries where exposed steel sections are necessary, e.g. building panels, facades and sculptures.