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CLASSIFICATION: E2553T1-4 per AWS A5.22, ASME SFA 5.22

A flux cored, all position electrode with a nominal composition of 25% chromium, 9.5% nickel, 3.5% molybdenum, 2% copper and 0.2% nitrogen, SelectAlloy 2553-AP is used to weld duplex stainless steels which contain approximately 25% chromium. It offers greater resistance to intergranular corrosion, pitting and stress corrosion cracking than 2209.

APPLICATIONS: The weld metal exhibits high strength with excellent corrosion resistance, especially to pitting attack from chlorides in sea water. SelectAlloy 2553-AP is well suited for welding similar materials in the chemical and fertilizer industries, offshore pipelines, sour gas lines, etc.

DIAMETERS: .045", 1/16"

SHIELDING GASES: 75-80% Ar/20-25% CO2, 40-55 cfh

WELDING POSITIONS: All positions

CHARACTERISTICS:

  • Superb all position performance.
  • Smooth, stable arc with very low spatter.
  • Bead is shiny, smooth and silvery in appearance.
  • Slag removes easily.
TYPICAL MECHANICAL PROPERTIES
  75% Ar/
25% CO2
Ultimate Tensile Strength (psi) 124,000
Yield Strength (psi) 97,000
Percent Elongation 24

TYPICAL DEPOSIT COMPOSITION
Wt% C Mn Si Ni Cr Mo Cu N
75Ar/25CO2 .03 1.10 .70 9.50 25.40 3.80 2.20 .20
Ferrite Number (WRC, 1992) - 42

TYPICAL WELDING PARAMETERS (75% Ar-25% CO2) *
Diam. Amps
Volts WFS
(in/min)
ESO
(in.)
Dep. Rate
(lbs/hr)
.045" 130 24 250 5/8 - 3/4" 5.4
.045" 160 26 300 5/8 - 3/4" 6.3
.045" 200 28 425 5/8 - 3/4" 9.2
.045" 270 34 780 5/8 - 3/4" 16.2
1/16" 170 25 150 3/4 - 1" 5.4
1/16" 215 27 195 3/4 - 1" 7.0
1/16" 250 28 240 3/4 - 1" 8.6
1/16" 305 29 320 3/4 - 1" 11.5

* Optimum conditions are in boldface type.