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Lean Duplex UR2202: an alternative to 304L with increasedcorrosion resistance and mechanical properties

Published online by Cambridge University Press:  13 May 2009

J. Peultier ,
S. Jacques  and
V. Baudu
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Abstract

The paper presents the new Mo free duplex stainless steelUR2202 (EN 1.4062) developed to provide a cost effectivealternative to 304L (EN 1.4307), concrete, organic materialsor galvanized carbon steel in potable water systems, pulp &paper industry and construction applications. The reductionof Ni is balanced by a nitrogen addition in order to obtaina microstructure containing approximately 50% ferrite and50% austenite. Several industrial heats were produced with22Cr%, 2Ni% and 0.2N% as the typical composition. Thenew lean duplex grade UR2202 has better localized anduniform corrosion resistance and twice the yield strengththan 304L.

Type
Research Article
Information
Metallurgical Research & Technology , Volume 106 , Issue 5: Iron OreEnergyContinuous CastingCold RollingStainless SteelSteel Use , May 2009 , pp. 214 - 219
Copyright
© La Revue de Métallurgie, 2009

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