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TIG Welding Wire Aluminum AlSi5 ER4043 2.4mm 2.5kg
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Description
⚡ ER4043 AlSi5 Aluminum TIG Welding Wire
ER4043 aluminum welding wire is a silicon-based filler alloy (approx. 5% Si) primarily used for welding aluminum-silicon and 6xxx series alloys such as 6061 or 6063. It is known for excellent weld pool fluidity and ease of use, making it ideal for repairs, castings, and general fabrication. Manufactured according to EN ISO 18273, it offers consistent performance in automotive, structural, and general-purpose applications.
✅ Key Features
- Excellent fluidity – very easy to weld with
- Low risk of hot cracking
- Bright, smooth weld appearance
- Ideal for welding cast aluminum and 6xxx series alloys
- Good color match after anodizing
✅ Technical Specifications
- Catalog Number: SI524P
- Wire Diameter: 2.4 mm
- Welding Method: TIG
- Base Material: Aluminum
- Material Type: AlSi5 – ER4043
- Net Weight: 2.5 kg
- Total Weight with Packaging: 2.72 kg
⚡ Comparison of Aluminum Welding Wire Alloys
✅ Overview of ER4043, ER5183 and ER5356
This table provides an overview of aluminum welding wires ER4043, ER5183, and ER5356 in terms of their applications, compatibility, mechanical properties, and corrosion resistance.
| Property | ER4043 | ER5183 | ER5356 |
|---|---|---|---|
| Typical Use | Repairs, castings, general fabrication | Shipbuilding, pressure vessels, extreme conditions | Structures, pipelines, automotive, motorcycles |
| Recommended Alloys | 6xxx series (6061, 6063), Al-Si alloys | 5xxx series with high Mg (5083, 5456) | 5xxx series (5050, 5052, 5083, 5356), partly 6xxx |
| Weld Strength | Lower than others | Very high strength | High, suitable for general loads |
| Weld Pool Fluidity | Excellent – easy to weld | Lower – requires experience | Good – manual and automated welding |
| Crack Resistance | Low susceptibility | Requires proper parameters | Good stability |
| Corrosion Resistance | Moderate | Very high – ideal for marine environment | High |
| Anodizing | Suitable – bright weld | Not recommended | Possible weld discoloration |
| Special Features | Cost-effective, great for repairs | Best choice for exposure to water and salt | Universal wire for most applications |