Welding Consumables
Aluminium-silicon filler metal for MIG and TIG welding of aluminium-silicon alloys
- Chemical Designation: ALSi12
- Standard: AWS A5.10, GB/T10858-2023
ER 4047 (ALSi12) Aluminium Welding Wire
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Chemical Composition (%)
| Si | Fe | Cu | Mn | Mg | Zn | Al | Be | Others | |
| Each | Total | ||||||||
| 11.0-13.0 | ≤0.8 | ≤0.30 | ≤0.15 | ≤0.10 | ≤0.20 | Rest | ≤0.0003 | ≤0.05 | ≤0.15 |
Mechanical Properties
- Tensile Strength (MPa): ≥170
- Yield Strength (MPa): ≥80
- Elongation (%): ≥4
Features
- Contains 12% silicon, providing excellent fluidity during welding
- Lower melting temperature helps minimize distortion in thin materials
- Good for filling wide or irregular gaps and reducing the risk of hot cracking
Available Sizes
- Welding wire: 1.2/1.6/2.0/2.4/3.0/3.2/4.0/5.0/6.0mm
- Spool: D300 (9kg), D270 (7kg), D200 (2kg), D100 (0.5kg)
Applications
- Automotive aluminium radiator, intercooler, and heat exchanger welding
- Window frame assembly for aluminium passenger buses
- Bicycle frame fabrication
- General aluminium part repair and maintenance
Packaging
- MIG wire diameter: 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm
- Package: D300 (9kg/spool), D270 (7kg/spool)
- MIG wire diameter: 1.2mm, 1.6mm
- Package: drum D660 (100kg/drum)
- TIG wire diameter: 2.0mm, 2.4mm, 3.0mm, 3.2mm, 4.0mm, 5.0mm, 6.0mm
- Package: 1000mm length (10kg/box)
- TIG wire diameter: 1.6mm, 2.0mm, 2.4mm, 3.0mm, 3.2mm, 4.0mm, 5.0mm, 6.0mm
- Coil inner diameter: D450mm, D300mm
- Package: 10-17kg/coil
Recommended Welding Method
For optimal results, this type of welding wire is commonly used in brazing with an oxy-fuel torch. Pair it with 201 aluminium flux to enhance flow and bonding quality.
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