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E2209-16 is used to weld duplex stainless
steels such as UNS Number N31803. The
welds offer excellent resistance to stress,
corrosion, cracking, and pitting. The
micro-structure of the weld metal consists
of austenite and ferrite, and the ferrite of
weld metal will be lower than the ferrite of
type 2205 base metal. When welding of
duplex stainless steel, controlled parameters
must be used to achieve specified mechanical
and corrosion resistance properties.
AWS Specification
AWS A5.4/A5.4M:2006
AWS Classification E2209-16
Welding Current
AC - DCEP
Typical Wire Chemistry
C 0.04
Cr 21.5 - 23.5
Ni 8.5 - 10.5
Mo 2.5 - 3.5
Mn 0.5 - 2.0
Si 1.00
P 0.04
S 0.03
N 0.08 - 0.20
Cu 0.75
Typical Mechanical Properties
(As Welded)
Yield Strength, ksi 87
Tensile Strength,min ksi 100
Elongation%, min 20
Welding Positions
F,V,OH,H
Available Diameters
3/32", 1/8", 5/32" & 3/16"
Operating Range in Amps
3/32" 45 - 80
1/8" 55 - 120
5/32" 65 - 170
3/16" 160 - 205
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