The ESAB 404301030 AlcoTec 4043 Aluminum MIG Welding Wire is a 0.030″ (0.8mm) solid aluminum wire, ideal for MIG welding applications. Manufactured from 4043 aluminum alloy, this wire contains silicon as the primary alloying element, improving weld fluidity and reducing the risk of cracking. It provides excellent corrosion resistance, making it a preferred choice for automotive, marine, aerospace, and general aluminum fabrication. Designed for use with 100% argon shielding gas, it supports flat, horizontal, vertical-up, and overhead welding positions.
This 1 lb plastic spool is perfect for small-scale projects, touch-ups, and portable welding applications. Meeting AWS ER4043 standards, this wire delivers strong, reliable welds with minimal oxidation and excellent feedability. Whether you’re working on automotive repairs, marine fabrication, or industrial aluminum structures, this wire ensures clean, high-quality welds for professional results.
Features:
- ER4043 Aluminum Alloy: Contains silicon for improved weld fluidity, reducing hot cracking and ensuring smooth arc performance.
- Compatible with 100% Argon Shielding Gas: Ensures stable arc performance and clean weld deposits.
- Strong, Ductile Welds: Provides a tensile strength of 34 ksi and yield strength of 28 ksi for durable aluminum joints.
- Versatile Welding Positions: Suitable for flat, horizontal, overhead, and vertical-up applications.
- Bright, Smut-Free Welds: Produces clean, aesthetically pleasing welds with minimal oxidation.
- 1 lb Plastic Spool: Convenient for small jobs, touch-ups, and portable welding setups.
Markets:
- Automotive Repair & Manufacturing: Ideal for welding aluminum body panels, engine components, and structural repairs.
- Marine & Shipbuilding: Provides corrosion-resistant welds for boats, docks, and offshore structures.
- Aerospace Manufacturing: Used in aircraft component welding, requiring precision and high strength.
- General Metal Fabrication: Commonly used in welding aluminum frames, enclosures, and industrial structures.
- Trailer & Truck Manufacturing: Ensures strong, reliable welds in aluminum truck bodies and trailers.
- Welding Repair Shops: A go-to wire for quick aluminum repairs and small-scale fabrication projects.
- Custom Fabrication & Prototyping: Suitable for low-volume, precision aluminum welding applications.
Specifications:
- Manufacturer: AlcoTec Wire Co
- Material: Aluminum (4043 alloy)
- Wire Diameter: 0.030″ (0.8mm)
- Weight: 1 lb (0.45 kg)
- AWS Classification: ER4043
- Tensile Strength (As Welded): 34 ksi
- Yield Strength (As Welded): 28 ksi
- Elongation (As Welded): 12%
- Welding Process: MIG (GMAW)
- Current Type: DCEP (Direct Current Electrode Positive)
- Shielding Gas: 100% Argon
- Welding Positions: Flat, Horizontal, Overhead, Vertical-Up
- Spool Type: Plastic
- Spool Weight: 1 lb
- Spool Diameter: 4 in
- Spool Width: 3 in
- Arbor Hole Diameter: 5/8 in
- Wire Type: Solid
- Standards: AWS A5.10 ER4043
The ESAB ER4043 aluminum MIG welding wire is a trusted choice for welders needing fluid, crack-resistant aluminum welds. Whether used for automotive repairs, marine fabrication, aerospace components, or general aluminum welding, this wire delivers excellent feedability, smooth arc characteristics, and reliable performance. Its 1 lb spool makes it perfect for quick repairs, precision welding, and portable welding applications, ensuring high-quality results every time.
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