MIG WIRE AUTOCRAFT AL4043 1.6MM 7KG SPL
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AUTOCRAFT AL4043 Aluminum MIG Welding Wire – 1.6mm (0.063") | 7kg Spool | Premium Aluminum-Silicon Alloy
Product Description
Achieve clean, crack-resistant welds on aluminum with AUTOCRAFT AL4043 MIG Welding Wire, a premium aluminum-silicon (Al-Si) alloy wire engineered for superior weldability, smooth arc performance, and excellent resistance to hot cracking. Supplied in a convenient 1.6mm diameter, 7kg spool (SPL), this wire is ideal for both professional fabricators and serious DIY welders working with aluminum castings, automotive parts, and general-purpose aluminum fabrication.
Key Features
- Alloy Type: ER4043 (AlSi5) — 5% silicon aluminum alloy wire
- Wire Diameter: 1.6mm (0.063 inch)
- Spool Weight: 7kg (net wire weight per spool)
- Format: SPL (Spool) — compatible with standard MIG wire feeders
- Excellent fluidity for smooth, uniform bead appearance
- High resistance to weld cracking, especially on castings and thicker sections
- Lower melting point than 5xxx series wires, allowing easier puddle control
- Reduced spatter for a cleaner finish and less post-weld cleanup
Common Applications
- Automotive and marine aluminum repair
- Aluminum castings (engine parts, transmission housings, cylinder heads)
- General fabrication of 3xxx, 6xxx, and cast aluminum alloys
- HVAC, sheet metal, and structural aluminum components
- Repair welding where crack sensitivity is a concern
Why Choose AL4043 Wire?
AL4043 is one of the most versatile and widely used aluminum MIG wires due to its forgiving nature and strong resistance to solidification cracking, making it a go-to choice for welding aluminum castings and dissimilar aluminum alloys. Its lower melting temperature compared to AL5356 wire also makes it easier to control the weld puddle, especially for less experienced welders.
Recommended Settings
| Parameter | Typical Range |
|---|---|
| Wire Diameter | 1.6mm (0.063") |
| Shielding Gas | 100% Argon |
| Polarity | DCEP (Reverse) |
| Recommended Amperage | 120–220A (material dependent) |
Specifications Summary
- Product Name: AUTOCRAFT AL4043 MIG Wire
- Diameter: 1.6mm
- Net Weight: 7kg
- Packaging: Spool (SPL)
- Alloy Composition: Aluminum with ~5% Silicon
- Color Code (Tip ID): Typically blue/light blue per AWS standard
This product is priced “per KG”. The minimum quantity available to purchase is shown in the "Pack Qty".
