Copper-Nickel Dezincification Resistance

The ability of copper-based alloys with significant nickel content to resist selective corrosion in aggressive aqueous media. This is achieved through the formation of a stable, passivating solid-solution layer.

Copper-nickel is not rusting steel, but forms a protective layer. When welding, you must be careful not to damage this layer. Too much heat or wrong filler material can ruin corrosion resistance. Use proper joint preparation and keep interpass temperature in check to maintain a clean structure. After welding, the weld should not cool too quickly so the protective layer can rebuild. Cleanliness is key, as contaminants will otherwise eat into the weld.

MetallurgieSchweißtechnik