COPR-TRODE®
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.
Typical Applications
| Billet molds | Conductor rolls | Heater elements |
| Copper sculptures | Steel mill electrode holders | Bus bars |
| Copper connectors |
COPR-TRODE®
| Limiting Chemical Composition | |
| % (filler metal) | |
| Copper* | 98.0 min |
| Tin | 1.0 max |
| Manganese | 0.50 max. |
| Silicon | 0.50 max. |
| Phosphorus | 0.15 max. |
| Others | 0.50 max. |
| * including silver |
| Mechanical Properties | |
| (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 |
Specifications
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
