Super Duplex 2507

UNS S32750 stainless
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High-alloy super duplex stainless with PREN >40 for outstanding pitting and crevice corrosion resistance in aggressive chloride environments. Subsea and offshore oil and gas standard.

Applicable Standards

  • ASTM A790
  • EN 1.4410
  • UNS S32750

Composition Ranges (wt %)

Element Min (%) Max (%) Typical Range
Fe 57.0 64.0 ~60.5
Cr 24.0 26.0 ~25.0
Ni 6.0 8.0 ~7.0
Mo 3.0 5.0 ~4.0
N 0.24 0.32 ~0.28
C — 0.03 ~0.01
Fe 57.0–64.0% Cr 24.0–26.0% Ni 6.0–8.0% Mo 3.0–5.0% N 0.24–0.32% C 0.0–0.03%

Typical Applications

  • Subsea manifolds
  • Heat exchanger tubes
  • Offshore risers
  • Desalination
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