254SMO High-Molybdenum Super Stainless Steel Pipe.png

PRE≥42.5, Excellent Chloride Pitting Resistance – 254SMO High-Molybdenum Super Stainless Steel Pipe

254SMO is a high-alloy super austenitic stainless steel, originally developed and trademarked by Outokumpu, corresponding to UNS S31254 and EN 1.4547 standards. Its core characteristic lies in its approximately 6.1% molybdenum content, combined with 20% chromium, 18% nickel, and 0.2% nitrogen, achieving a Pitting Resistance Equivalent (PRE) value of ≥42.5 —far exceeding conventional austenitic stainless steels. This unique composition delivers exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in halide-containing environments (especially chlorides). In certain applications, it can even serve as a cost-effective alternative to higher-cost nickel-based alloys and titanium.

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