• Weld Wire Division



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.

Typical Applications

Billet molds
Conductor rolls
Heater elements
Copper sculptures
Steel mill electrode holders
Bus bars
Copper connectors

Limiting Chemical Composition

% (filler metal)

Copper*98.0 min
Tin1.0 max
Manganese0.50 max.
Silicon0.50 max.
Phosphorus0.15 max.
Others0.50 max.

* including silver

Mechanical Properties

(Nominal all-weld metal values)

Tensile Strength, ksi29 (200 MPa)
Yield Strength, ksi8 (55 MPa)
Elongation, % in 2″ (51 mm)29
Reduction of Area, %45
BHN (3000 kg) 1/4″ (6.4mm) deposit54
Electrical Conductivity, % IACS40


AWS A5.7 Class ERCu

*Hardness will vary depending on quality of the weld and experience and knowhow of the welder.
Document Download

COPR-TRODE® Technical Data Sheet