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ECuNi (187)


Alloy Type:

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 sides of copper-nickel clad steels.

 

Typical Applications:  marine applications due to its good resistance to the corrosive effects of sea water

 

AWS Class: ECuNi Certification:   AWS A5.6/A5.6M:2008
Alloy:  ECuNi ASME SFA A5.6

 

Welding Position:   F, V, OH, H Current:

DCEP

 

Tensile Strength, kpsi: 50
Yield Strength, kpsi: *NS
Elongation %: 20 min

 

*Not Specified

 

Typical Wire Chemistry as per AWS A5.6 (single values are maximum)

Mn Fe Si Cu including Ag Ni including Cobalt P Pb Ti Other
1.00-2.50 0.40-0.75 0.50 Remainder 29.0-33.0 0.020 0.02 0.50 0.50

 

Typical Welding Parameters
Diameter Process Volt Amps (flat) Amps (V/OH)
in (mm)
 3/32  (2.4) SMAW 24-28 70-85 65-75
 1/8  (3.2) SMAW  26-30 85-110  80-90
 5/32  (4.0) SMAW  28-32 110-140  100-120
 3/16  (4.8) SMAW  28-32 120-160  110-130

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