ERCuAl-A2 (Alum Bronze A2)
Alloy Type: A5.7, COPPER AND COPPER ALLOY Bare Rods and Electrodes
ERCuAl-A2 Aluminum Bronze A-2 filler metal is an intermediate-strength aluminum bronze alloy used for welding aluminum bronze plate fabrications and for joining dissimilar metals such as cast iron, carbon steels, copper, bronze and copper-nickel materials. It is excellent for building up or overlaying metal for wear and corrosion resistant surfaces. Weld deposits exhibit high mechanical properties, tensile strength, yield strength and hardness.
Typical Applications: marine maintenance and repair; wear surface reconstruction; cast repair; joining aluminum bronze of similar composition
| AWS Class: ERCuAl-A2 | Certification: AWS A5.7/A5.7M:2007 |
| Alloy: ERCuAl-A2 | ASME SFA A5.7 |
| Welding Position:
|
Current:
AC-DCEP |
| Tensile Strength, kpsi: | 79 |
| Yield Strength, kpsi | 35 |
| Elongation in 2” (%): | 28 |
Typical Wire Chemistry as per AWS A5.7(single values are maximum)
| Cu including Ag | Zn | Fe | Si | Al | Pb | Other |
| Remainder | 0.02 | 0.5-1.5 | 0.10 | 8.5-11.0 | 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 |
| Typical Welding Parameters | |||||
| Diameter | Process | Volt |
Amps |
GAS | |
| in | (mm) | ||||
| .035 | (.9) | GMAW | 20-26 | 70-120 | 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 | 170-230 | 100% Argon or 75% Argon, 25% Helium 45-55 CFH |