ERCu (Deox Copper)
Alloy Type: A5.7, COPPER AND COPPER ALLOY Bare Rods and Electrodes
ERCu (Deoxidized Copper) is a filler metal containing 98% or more copper with small amounts of Phosphorus and Silicon used for joining copper to itself or with galvanized or mild steel where high strength joints are not required. This easy flowing alloy produces weld deposits that match the color of copper, are electrically conductive and porosity free.
Typical Applications: joining copper pipes, tanks, and copper fittings; joining deoxidized copper; overlay steel surfaces to resist corrosion
| AWS Class: ERCu | Certification: AWS A5.7/A5.7M:2007 |
| Alloy: ERCu | ASME SFA A5.7 |
| Welding Position:
|
Current:
AC-DCEP |
| Tensile Strength, kpsi: | 8 |
| Yield Strength, kpsi: | 29 |
| Elongation in 2” (%): | 29 |
Typical Wire Chemistry as per AWS A5.7 (single values are maximum)
| Cu including Ag | Sn | Mn | Si | P | Al | Pb | Other |
| 98.0 min | 1.0 | 0.50 | 0.50 | 0.15 | 0.01 | 0.02 | 0.50 |
| Typical Welding Parameters | |||||
| Diameter | Process | Volt |
Amps |
GAS | |
| in | (mm) | ||||
| 1/16 | (1.6) | GTAW | 0 | 70-120 | 100% Helium or 100% Argon 40-55 CFH |
| 3/32 | (2.4) | GTAW | 0 | 120-160 | 100% Helium or 100% Argon 40-55 CFH |
| 1/8 | (3.2) | GTAW | 0 | 170-230 | 100% Helium or 100% Argon 40-55 CFH |
| Diameter | Process | Volt |
Amps |
GAS | |
| in | (mm) | ||||
| .035 | (.9) | GMAW | 20-26 | 70-150 | 100% Argon or 75% Argon, 25% Helium 45-55 CFH |
| .045 | (1.14) | GMAW | 22-28 | 120-160 | 100% Argon or 75% Argon, 25% Helium 45-55 CFH |
| 1/16 | (1.6) | GMAW | 29-32 | 250-400 | 100% Argon or 75% Argon, 25% Helium 45-55 CFH |
| 3/32 | (2.4) | GMAW | 32-34 | 350-500 | 100% Argon or 75% Argon, 25% Helium 45-55 CFH |