ESAB 404315040 WIRE, .040″ ER4043 ALUMINUM 16LB

The ESAB 404315040 ER4043 Aluminum MIG Welding Wire is a versatile and widely used .040″ (1.0mm) aluminum filler metal designed for superior weldability. Made from 4043 aluminum alloy, this wire contains silicon as the primary alloying element, which improves fluidity and reduces the risk of weld cracking. It is non-heat treatable and has a melting range of 1065 to 1170°F, making it an excellent choice for welding aluminum components in automotive, marine, aerospace, and general fabrication industries. The 16 lb spool provides extended welding time, reducing downtime for spool changes. Additionally, the wire produces bright, smut-free welds and develops a gray finish when anodized, making it ideal for applications where aesthetics are a consideration.

With enhanced fluidity and reduced cracking tendencies, this wire is perfect for welding 6XXX series aluminum and other applications requiring strong, reliable joints. It is also commonly used in spray and flame metallizing applications, providing high-quality aluminum coatings for corrosion resistance and wear protection. Meeting ANSI/AWS A5.10 and AMS 4190 standards, this wire ensures compliance with industry requirements for professional aluminum welding.

Features:

• ER4043 Aluminum Alloy: Contains silicon for improved fluidity, reducing hot cracking and ensuring smooth welds.
• Non-Heat Treatable: Provides consistent performance without requiring post-weld heat treatment.
• Excellent Corrosion Resistance: Ideal for applications exposed to moisture and harsh environments.
• Low Smut, Bright Welds: Produces cleaner, more visually appealing aluminum welds with minimal post-weld cleaning.
• Gray Finish When Anodized: Maintains a professional appearance in applications where anodizing is required.
• Versatile Use: Suitable for welding, spray metallizing, and flame metallizing processes.
• 16 lb Spool: Allows for extended welding operations with fewer spool changes, improving productivity.

Markets:

• Metal Fabrication: Used in welding aluminum frames, structural components, and other fabricated aluminum products.
• Automotive Repair: Ideal for welding aluminum body panels and structural components in vehicle repair and manufacturing.
• Marine & Shipbuilding: Provides corrosion-resistant welds for boats, docks, and other aluminum marine structures.
• Aerospace Manufacturing: Used in aircraft components where strength, lightweight materials, and high weld quality are essential.
• Trailer & Truck Manufacturing: Ensures strong, durable welds in aluminum trailers and truck bodies.
• General Welding Shops: A go-to wire for welders handling various aluminum projects, from repairs to full-scale fabrication.
• Spray & Flame Metallizing: Used for coating applications where aluminum needs to be applied for wear resistance and corrosion protection.

Specifications:

• Material: Aluminum (4043 alloy)
• Wire Diameter: .040″ (1.0mm)
• Weight: 16 lbs (7.26 kg)
• AWS Classification: ER4043
• Melting Range: 1065 – 1170°F (575 – 632°C)
• Density: 0.097 lb/cu.in
• ISO Designation: AlSi5
• Standards: ANSI/AWS A5.10, AMS 4190

The ESAB ER4043 aluminum MIG welding wire is a trusted choice for professional welders needing crack-resistant, smooth-flowing filler metal for aluminum fabrication, repair, and coating applications. Whether used in MIG welding, flame spraying, or metallizing processes, this wire delivers high-quality, corrosion-resistant results for marine, aerospace, automotive, and industrial applications. Its silicon-enhanced formulation ensures fluid weld puddles, bright welds, and long-lasting performance, making it an essential wire for any aluminum welding project.