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.
‘Weathering steels are specified in BS EN 10 155:1993 (superseded by BS EN 10025-5:2004) and within this category Cor-ten is a well known proprietary grade. These steels have properties comparable with those of Grade S355 steels to BS EN 10 025’.