SelectAlloy 2209-C Close Window
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CLASSIFICATIONS: EC2209 per AWS A5.22

SelectAlloy 2209-C is a metal cored electrode designed to weld duplex stainless steels of 22Cr-9Ni-2Mo-N type. The weld deposit has a “duplex” microstructure of austenite and ferrite and normally gives ferrite in the range of 25-40 FN. This electrode delivers very good resistance to intergranular corrosion, pitting and to stress corrosion cracking in environments containing H2S and chlorides.

APPLICATIONS: SelectAlloy 2209-C is utilized for welding in the chemical and fertilizer industries, on offshore pipelines and on sour gas lines. This electrode welds 2205, 2304 and other similar types of duplex stainless steel.

DIAMETERS: .045", 1/16"

SHIELDING GASES: Ar/1-2% O2, Ar/1-2% CO2, 40-50 cfh

WELDING POSITIONS: Flat and Horizontal

CHARACTERISTICS:

  • Well suited for small butt, lap and fillet welds on thin material at elevated speeds.
  • Operates with a smooth, spray arc transfer.
  • Produces little or no slag and virtually no spatter.
  • Handles poor fit-up.
  • Offers higher deposition rates and more controlled penetration than the equivalent solid wire.
TYPICAL MECHANICAL PROPERTIES
  98% Ar/
2% O2
Ultimate Tensile Strength (psi) 117,000
Yield Strength (psi) 93,200
Percent Elongation 25

TYPICAL DEPOSIT COMPOSITION
Wt% C Mn Si Ni Cr Mo N
98 Ar/2O2 .02 1.30 .70 8.40 22.50 3.10 .15
Ferrite Number (WRC, 1992) - 40

Typical Welding Parameters (98% Ar-2% O2)**
Diameter WFS (ipm) Amperage Voltage ESO (in.) Dep. Rate (lbs/hr)
.045" 250 180 21 1/2-5/8" 7.1
.045" 400 240 23 1/2-5/8" 11.3
.045" 500 280 25 1/2-5/8" 14.1
.045" 650 300 28 1/2-5/8" 18.4
 
1/16" 150 190 24 3/4-1" 7.7
1/16" 250 280 25 3/4-1" 12.8
1/16" 350 385 26 3/4-1" 17.9
1/16" 450 490 32 3/4-1" 23.1

** Optimum conditions are in boldface type.