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Aluminil Si5 welding electrodes E4043 - E Al 4043 (AlSi5)
Aluminil Si5 is a special coated aluminium electrode for welding, repairing and surfacing forged and cast aluminium-silicon alloys and joining dissimilar aluminium alloys with max. 7% Si content. The easy flowing characteristics make the electrode suitable for welding all aluminium castings (except AlMg castings). The electrode has a pure white coating specifically designed to reduce moisture pick-up. For thicker plate materials (≥15 mm) it is recommended to preheat at 150°C to 250°C before welding.
Standards
- AWS A5.3: E 4043
- EN ISO 18273: E Al 4043 (AlSi5)
Type of coating
- Special
Current type
- DC+
Welding positions
- Flat butt welds, fillet welds and limited vertical upward
Basic materials to be welded
- Aluminum-MgSi alloys
- Aluminum-Mg alloys with up to 2,5% Mg
- Aluminum-MnCu alloys
- Aluminum-Si cast alloys
- Joining dissimilar aluminum alloys
Applications
- General fabrication and construction (aluminum base metals)
- Shipbuilding and offshore
- Repair and maintenance
Chemical composition
- Manganese (Mn): 0.05%
- Silicon (Si): 5%
- Copper (Cu): 0.05%
- Zinc (Zn): 0.10%
- Iron (Fe): 0.20%
- Aluminum (Al): Balance
Mechanical properties
- Condition: as welded
- 0.2% Yield strength: 90 MPa
- Tensile strength: 160 MPa
- Elongation Lo = 5d: 15%
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