AWS A5.7 – ERCU
Description and Application
COPR-TRODE® is a deoxidized copper alloy developed to provide dense, high quality deposits with relatively high electrical conductivity for use in joining and overlay with the inert-gas processes.
COPR-TRODE® spooled wire and filler metal rod are used primarily to fabricate deoxidized copper and repair weld copper castings with the gas metal-arc and gas tungsten-arc processes. It may also be used to weld galvanized steel and deoxidized copper to mild steel where high strength joints are not required.
COPR-TRODE® spooled wire and filler metal rod are used to overlay surfaces to resist corrosion.
|Billet molds||Conductor rolls||Heater elements|
|Copper sculptures||Steel mill electrode holders||Bus bars|
|Limiting Chemical Composition|
|% (filler metal)|
|* including silver|
|(Nominal all-weld metal values)|
|Tensile Strength ksi||29 (200 MPa)|
|Yield Strength ksi||8 (55 MPa)|
|Elongation % in 2″ (51 mm)||29|
|Reduction of Area %||45|
|Hardness (HBW 10/500)on 1/4″ (6,4 mm) deposit||54|
|Electrical Conductivity, % IACS||40|