ERCu (Copper) isa deoxidized copper alloy welding filler metal, used as bare wire or rod forMIG/TIG welding to join and repair copper, copper castings, and sometimes dissimilar metals like steel where high strength isn't critical, offering dense, high-quality welds with good conductivity, often containing phosphorus or silicon as deoxidizers.
Key Characteristics:
Material:Primarily deoxidized copper, often with phosphorus (P) and silicon (Si) for improved weldability.
Standards:Conforms to AWS (American Welding Society) A5.7, ASME SFA A5.7.
Processes:Used with Gas Metal Arc Welding (GMAW/MIG) and Gas Tungsten Arc Welding (GTAW/TIG).
Properties:Provides high-quality, dense welds with relatively high electrical conductivity.
Common Applications:
Fabrication:Building and repairing deoxidized copper structures, bus bars, and connectors.
Surfacing:Overlaying surfaces to improve corrosion resistance.
Dissimilar Welds:Joining copper to steel or copper-nickel alloys (with proper procedures).
Industries:Used in chemical processing, shipbuilding, electrical components, and food processing.
Variants:
ERCuNi:A specific copper-nickel alloy for seawater corrosion resistance, used in marine and desalination applications.
ERCuSn-A:A phosphor bronze for joining copper-tin bronzes and some brasses.
In essence, ERCu is a versatile copper filler metal for creating strong, conductive copper-based joints, especially in applications needing dense, defect-free deposits.
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