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CLASSIFICATION: E2594T1-4 per AWS A5.22. ASME SFA 5.22

This flux cored, all position electrode has a nominal composition of 25.5% chromium, 9.3% nickel, 3.5% molybdenum and 0.25% nitrogen. The Pitting Resistance Equivalent, given as Cr + 3.3* (Mo+0.5W) + 16*N, is equal or greater than 40. The semi-quantitative Pitting Resistance Equivalent Number provides a measure of the resistance to pitting in aqueous environments containing chlorides.

APPLICATIONS: SelectAlloy 2594-AP electrodes are designed for welding duplex (2500 family)and super-duplex ( wrought UNS S32750 and S32760 and cast UNS J93380 and J93404) materials in the chemical and fertilizer industries, energy generation, flue gas desulphurization, and for many offshore applications including piping systems, pumps, valves and heat exchangers.

DIAMETERS: .045", 1/16"

SHIELDING GASES: 75% Ar/25% CO2

WELDING POSITIONS: All positions

CHARACTERISTICS:

  • Excellent all position performance.
  • Provides a smooth, stable arc with very low spatter.
  • Bead is shiny, smooth and silvery in appearance.
  • Slag removes easily.
  • Delivers better intergranular corrosion resistance.
TYPICAL MECHANICAL PROPERTIES
  75% Ar/
25% CO2
Ultimate Tensile Strength (psi) 124,000
Yield Strength (psi) 97,000
Percent Elongation 20

TYPICAL DEPOSIT COMPOSITION
Wt% C Mn Si Ni Cr Mo N W
75Ar/25CO2 .03 1.50 .70 9.60 25.40 3.80 .24 .55
Ferrite Number (WRC, 1992) - 48
PREN - 43.5