MasterWeld ErCu (C7) Pure Copper TIG Welding Rods
Deoxidised pure copper.
MasterWeld ER Cu (C7) produces a deoxidised pure copper deposit for maximum thermal and electrical conductivity.
Applications include plate for chemical plant and moulds, stills and calorifiers, rods and wires for electrical components and tubes for heat exchangers.
Welding Guidelines
Apart from very thin material (<3mm thick) a preheat will be required. The required preheat will range from about 100°C at 6mm thick up to about 400/500°C for material 15mm thick.
Specifications
AWS A5.7 ERCu
BS EN ISO 24373 S Cu 1898A / CuSn1MnSi
BS 2901 pt 3 (C7)
DIN 1733 (SG-CuSn / 2.1006)
ASME IX Qualification
QW432 F-No 31
Materials to be welded - Oxygen free copper
BS grade C103, UNS C10200, ISO Cu-OF / Cu-OFS
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