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Cast Iron Electrodes

SUPERLINK MONEL

AWS A5.15: ECuNi (equivalent) Nickel-Copper (Monel-type) covered electrode

A nickel-copper (Monel-type) electrode designed for welding cast iron to copper-nickel alloys and for repair of cast iron where corrosion resistance to brine, seawater, and mild acids is required. Produces machinable deposits. Also used for joining cast iron to CuNi alloys.

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Technical specifications

Weld metal analysis, %
Ni Cu Fe Mn Si
60–70%25–35%≤2.5%≤2.0%≤1.0%
Mechanical properties
Tensile strength ≥345 MPa
Hardness ~130–170 HB
Notes Machinable with standard tooling

Welding procedure & parameters

DC+ (DCEP) preferred. Short bead technique. Preheat 100°C–150°C. Keep interpass temperature low. Peen each bead.

Typical applications

Repair of cast iron components in marine, chemical, or brine-handling service. Joining cast iron to copper alloys or CuNi piping. Pump bodies and valve bodies in seawater service.

Storage & handling notes

Provides improved corrosion resistance over NiFe types in specific corrosive environments. Store in dry condition.