SelectAlloy 2594-AP

Stainless Steel / Flux Cored / Gas Shielded


Features

  • This alloy is considered a “superduplex stainless steel” with a Pitting Resistance Equivalent Number (PREN) of > 40.
  • Designed for welding in all positions where well washed beads can be achieved with minimal weaving.
  • Smooth arc transfer produces minimal spatter with excellent slag release.
  • Applications for this alloy type include welding of UNS S32750 and 32760 (wrought), UNS J93380 and J93404 (cast). It can also be used to weld UNS S32550, J93370, and J93372 when not subject to sulfurous or sulfuric acids in service.
  • The high PREN is an indicator of superb resistance to pitting in aqueous chloride-containing environments.
  • Dissimilar welds are another application in welding carbon and low alloy steels to duplex stainless steels as well as to weld “standard” duplex stainless steel such as UNS S32205 and J92205, especially for root runs in pipe.

Standard Diameters

in (mm)
  • 0.045 (1.2)
  • 1/16 (1.6)

Welding Positions

All Positions

Shielding Gas

  • 75-80% Ar + Balance CO₂
    Flow Rate: 40 – 50 CFM

Polarity

Direct Current Electrode Positive (DCEP)

Conformances

  • ASME SFA 5.22
    • E2594T1-4
  • AWS A5.22
    • E2594T1-4
  • TYPICAL WELD DEPOSIT CHEMISTRY (WT%)
    Shielding Gas C Cr Cu Mn Mo N Ni P S Si WRC-1992 Ferrite
    75% Ar/25% CO₂ 0.03 25.20 0.29 1.05 2.95 0.23 8.90 0.02 0.01 0.53 50
    Bismuth is not intentionally added and is not known to be at levels greater than 0.002 wt%
    Typical Mechanical Properties
    Shielding Gas Tensile Strength
    ksi (MPa)
    Yield Strength
    ksi (MPa)
    Elongation
    (%)
    WeldCondition PWHTTemp Charpy V-Notch
    -50 °F ft⋅lb (-46 °C J)
    75%Ar / 25%CO2 125 (862) 88 (607) 28 As-Welded 35 (47)

    Packaging (lbs (kg))

    33 (15) Spools, 60 (27.2) Coils, 500 (226.8) Round Drum, 800 (362.9) Hex Drum, 900 (408.2) Hex Drum

    *Some packaging options may not be available depending on diameter and product. Special package options may be available upon request.