Lean Duplex according to NORSOK M-120 MDS YD35 has an improved balanced chemistry of chromium, molybdenum and nitrogen content, resulting in a PRE value ≥ 28 and increased mechanical strength compared to the standard EN 1.4362 / UNS 32304. This grade outruns AISI 316L acc. to both EN 1.4404 & EN 1.4436 with respect to pitting corrosion resistance. Due to risk of embrittlement, duplex steels should not be used at temperatures above 250 – 325°C.
Trademark information: EDX 2304 is a trademark owned by Outokumpu OY.
EN 1.4362 / Lean Duplex UNS S32304 / EDX 2304 is characterized by:
- Good resistance to stress corrosion cracking.
- Good resistance to pitting and crevice corrosion.
- High resistance to general corrosion.
- High mechanical strength.
- High resistance to erosion corrosion and corrosion fatigue.
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Applications
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Heat Tratment and Weldability
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Chemical Composition (Specific for Plates)
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Reference Standards
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Mechanical Properties (Typical)