Ferritic-austenitic steels
Femtic-austenitic steels, which have attracted increasing interest since the 1970s are
often known as duplex steels. A characteristic of them is that they combine excellent
corrosion resistance with high mechanical strength.
These steels find their main application area in the offshore industry, where their
properties are particularly suitable for use in a high-chloride environment. Their high
strength, in comparison with that of austenitic steels, also brings dividends in the form of
lighter structures. The cellulose, chemical and petrochemical industries are other areas
in which they are being increasingly widely used.
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