SelectAlloy 2594-AP

Stainless Steel / Flux Cored / Gas Shielded

Resources

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

  • 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)
    Recomended Welding Parameters
    Diameter
    in (mm)    		 Shielding Gas Position Wire Feed Speed
    in/min (m/min)    		 Amps Volts Contact Tip to Work Distance
    in (mm)
    0.045 (1.2) 75% Ar/25% CO₂ All Positions 215 (5.5) 130 23 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 75% Ar/25% CO₂ All Positions 260 (6.6) 145 24.5 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 75% Ar/25% CO₂ All Positions 310 (7.9) 160 26 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 75% Ar/25% CO₂ Flat & Horizontal 420 (10.7) 180 27.5 5/8 – 3/4 (16 – 19)
    0.045 (1.2) 75% Ar/25% CO₂ Flat & Horizontal 450 (11.4) 200 29 5/8 – 3/4 (16 – 19)
    1/16 (1.6) 75% Ar/25% CO₂ All Positions 135 (3.4) 160 23 5/8 – 3/4 (16 – 19)
    1/16 (1.6) 75% Ar/25% CO₂ All Positions 190 (4.8) 195 24.5 5/8 – 3/4 (16 – 19)
    1/16 (1.6) 75% Ar/25% CO₂ All Positions 225 (5.7) 210 26 5/8 – 3/4 (16 – 19)
    1/16 (1.6) 75% Ar/25% CO₂ Flat & Horizontal 255 (6.5) 225 27.5 3/4 – 1 (19 – 25)
    1/16 (1.6) 75% Ar/25% CO₂ Flat & Horizontal 290 (7.4) 245 29 3/4 – 1 (19 – 25)

    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.