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ECuNi (Alloy 187) is a copper-nickel,
all-position, electrode of SMAW of wrought
or cast alloys of similar composition as well
as 80 Cu + 20 Ni and 90 Cu + 10 Ni alloys.
It is also used for the clad side of coppernickel
clad steels. This filler metal is widely
used in marine applications because of its
good resistance to the corrosive elements
of seawater.
AWS Specification
AWS A5.6/A5.6M:2008
AWS Classification ECuNi
Welding Current
DCEP
Welding Positions
F,V,OH,H
Typical Wire Chemistry
Ni 29.0 - 33.0
Mn 1.00 - 2.50
Si 0.50
Fe 0.40 - 0.75
Ti 0.50
P 0.020
Pb 0.02
Cu (including Ag) REM
OTHER 0.50
Typical Mechanical Properties
(As Welded)
Yield Strength, ksi 37
Tensile Strength, ksi 54
Elongation%, min 28
Available Diameters
3/32",1/8", 5/32" & 3/16"
Operating Range in Amps
3/32" 65 - 75
1/8" 80 -110
5/32" 100 - 140
3/16" 110 - 160
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