Copper Bridge ER4043 Aluminum Welding Wire
DESCRIPTION
Copper Bridge ER4043 is an Al-Si alloy welding wire that can be used where the base metal requires thermal treatment, mainly 6xxx-series alloys. Higher silicon improves fluidity, lowers crack sensitivity, and makes it a preferred choice for welders. It can also be used on weld-forge and casting materials.
▶ AVAILABLE DIAMETERS
MIG:0.8-1.6 mm (0.030-1/16 in): TIG: 2.0-5.0 mm(0.079-3/16 in)
▶ PACKAGING
1.1/2.2/4.4 Ib tubes; 11/15.4 Ib spools
▶ APPLICATIONS
Mainly used for welding 6XXX alloys and most casting alloys, including automotive components such as frames and drive shafts.
▶ WELDING PROCESS
GMAW/GTAW
▶ POLARITY
DCEP (MIG)/ AC or DC+ by process
▶ WELDING POSITIONS
All position
CHEMICAL COMPOSITION OF DEPOSITED METAL(WT.%)
| Element | Si | Fe | Cu | Mn | Mg | Zn | Ti | Al | Be |
| AWS/GB-T Requirement | 4.5-6.0 | ≤0.80 | ≤0.30 | ≤0.05 | ≤0.05 | ≤0.10 | ≤0.20 | bal. | ≤0.0003 |
| Copper Bridge Typica | 5.4 | 0.12 | 0.004 | 0.006 | 0.005 | 0.007 | 0.055 | bal. | 0.0001 |
MECHANICAL PROPERTIES OF DEPOSITED METAL
| Property | Tensile /MPa | Yield /MPa | Elongation/% | Impact J/°C |
| AWS | ≥165 | - | - | - |
| GB/T | ≥165 | ≥70 | ≥4 | - |
| Example value | 178 | 115 | 19 | - |
RECOMMENDED WELDINGPARAMETERS
| Diameter/mm | Φ0.8 | Φ0.9 | Φ1.0 | Φ1.2 | Φ1.6 |
| Current/A | 60-170 | 60-170 | 90-210 | 140-260 | 190-350 |
| Voltage/V | 13-24 | 13-24 | 15-26 | 20-29 | 25-30 |
NOTES
1. Use 100% Ar, 75% Ar + 25% He, or 50% Ar + 50% He shielding gas.
2. Clean aluminum base metal aggressively before welding (oxide layer).
3. Preheat thick plate to 100-200°C (210-390°F) for better weld pool flow.
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