ER 4043 (AlSi5) Aluminium Welding Wire
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Welding Consumables
Aluminium-silicon filler metal for MIG and TIG welding of 6000 series aluminium and cast alloys
- Chemical Designation: AlSi5
- Standard: AWS A5.10, GB/T10858-2023
Chemical Composition (%)
| Si | Fe | Cu | Mn | Mg | Zn | Ti | AL | Be | Others | |
| Each | Total | |||||||||
| 4.5-6.0 | ≤0.8 | ≤0.30 | ≤0.05 | ≤0.05 | ≤0.10 | 0.20 | Rest | 0.0003 | ≤0.05 | ≤0.15 |
Mechanical Properties
- Tensile Strength (MPa): ≥165
- Yield Strength (MPa): ≥70
- Elongation (%): ≥4
Features
- Contains 5% silicon, making it ideal for welding 6xxx series aluminium alloys and cast materials
- Offers excellent flow characteristics, helping achieve smooth, well-formed welds
- Known for its versatility and strong resistance to hot cracking during welding
Available Sizes
- Welding wire: 0.8/1.0/1.2/1.6/2.0/2.4/3.0/3.2/4.0/5.0/6.0mm
- Spool: D300 (9kg), D270 (7kg), D200 (2kg), D100 (0.5kg)
Applications
- Commonly used in the automotive industry for welding aluminium radiators, intercoolers, and heat exchangers
- Suitable for fabricating container truck bodies where strong, consistent welds are needed
- Frequently applied in the assembly of aluminium bicycle frames and sports equipment
- Ideal for joining refrigeration-related aluminium parts that require corrosion resistance
- Works well for welding and repairing cast aluminium alloys
- A good choice for welding aluminium housings and structural casings
- Suitable for base metals like 6061, 6063 and other 6xxx series aluminium alloys
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
This aluminium-silicon wire performs best with AC TIG or MIG welding under pure argon shielding. For optimal results, the area to be welded should be thoroughly cleaned before welding. Keep both the welding wire and workpiece dry, and avoid exposing them to moisture or contaminants.