Indaten Corten steelsA34 Indaten atmospheric corrosion resistant steelsWhen this steel is used untreated and exposed to the weather, a protective oxide layer forms on its surface This is why the steel is often referred to as “self-patinating” Properties Indaten °355 steels offer improved atmospheric corrosion resistance and conform to the EN 10025-5 :2004 standard These are fine grained grades with a high elastic limits and are optimised to provide very high application performance Advantages When this steel is used untreated (without coating) and exposed to the weather, a strongly adhesive protective oxide layer forms on its surface As soon as the phenomenon stabilises, this patina becomes brown-purple in colour and takes on a finely grained appearance The aesthetic value of this typical appearance is used to advantage in various architectural projects: miscellaneous building Applications The field of application for Indaten °355 is very wide: architecture, sculpture, bridges, industrial chimneys, railway goods wagons, silos, containers and pylons The fact that the material can be used unprotected eliminates the problem of maintenance and guarantees its life expectancy The effectiveness of the corrosion protection depends to a great extent on the speed of formation of the patina For optimum patina formation Indaten°355 is used in a non-confined environment, and possibly even a sulphuric atmosphere On the other hand we strongly advise against using Indaten °355 in the presence of condensation or repeated soiling, especially in a chlorine atmosphere Weldability A low carbon chemical composition and a fine grain structure gives Indaten °355 steel good weldability by the usual methods |