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ER4043 Aluminum Alloy Welding Wire

-- Steady & Reliable Manufacturer --

Product Engineering

ER4043 Aluminum Alloy Wire is manufactured through a continuous casting and cold-drawing process. The alloy's "cleanliness" is paramount; any trace of surface oil or moisture can react with the molten aluminum to form hydrogen gas, the primary cause of porosity. Our wire undergoes a multi-stage chemical etching process to remove all hydrated oxides. This ensures a "radiographic quality" wire that produces consistent, high-integrity joints across all MIG and TIG platforms.

DB Certification CE Certification ABS Certification DNV Certification CCS Certification

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20+ Years Experience

Over two decades of aluminum alloy wire production expertise

International Certifications

DB, CE, ABS, DNV, CCS and other authoritative certifications

200MT Monthly Capacity

Large-scale production with consistent quality

Global Export

Exporting to over 30 countries worldwide

Total Quality Management

Quality is the foundation of our ER4043 alloy wire. From the initial melting of the high-purity ingots to the final spooling in a humidity-controlled cleanroom, we track every variable. Our commitment to traceability means every spool is tagged with a heat number and production date. We don't just sell wire; we sell the peace of mind that comes from knowing your consumables will never be the limiting factor in your production line.

Detailed Specifications

Wire Cast400 mm−1000 mm (Standard)
Diameter Tolerance+0.001/−0.003 mm
Surface Cleanliness<0.35 mg/m residual lubricants
Elongation≥15% (Annealed state)
Modulus of Elasticity70 GPa

Industrial Scenarios

  • Automotive Subframes: High-speed robotic welding where wire feed reliability is non-negotiable.

  • Solar Panel Frames: Structural joining of extruded 6063 profiles for outdoor durability.

  • Marine Trim: Welding decorative aluminum parts where saltwater resistance is less critical than finish.

  • Solution: Solving wire-feed "bird-nesting" by maintaining a precise wire cast and helix that ensures consistent tip contact.

Professional FAQ

  • Q: What is the recommended shielding gas?A: 100% Argon for sections up to 12 mm. For thicker sections, an Argon/Helium mix is preferred for better heat input.
  • Q: Is ER4043 safe for food-grade applications?A: Yes, it is widely used in food processing equipment where the oxide layer provides a safe, non-toxic surface.

Performance Features

  • Ultra-Stable Arc: Low moisture surface ensures minimal arc fluctuation and reduced downtime.

  • High Feedability: Harder surface than 5XXX wires leads to better performance in long push-pull torches.

  • Wide Process Window: Forgiving of slight voltage or wire-feed speed variations.

  • Compatibility: Joins 1XXX,2XXX,3XXX,6XXX series and most casting alloys.

Selection Guide

Select this Alloy Wire when you need a "safe" filler for a wide variety of base metals. It is the most forgiving wire for novice welders and automated systems alike. Avoid using it for joints that will be subjected to high shear stress or impact.

About Us

Coming From China, Marketing To The World.

Hangzhou Kunli welding materials Co., Ltd. is China ER4043 Aluminum Alloy Welding Wire Manufacturers and Wholesale ER4043 Aluminum Alloy Welding Wire OEM/ODM Suppliers. We are located in the industrial zone of Puyang Town, Xiaoshan District, Hangzhou, Zhejiang Province. It is a high-technology enterprise specializing in the research, development and manufacturing of high-performance. The company has more than 20 years of aluminum alloy wire production experience, with international advanced manufacturing equipment, complete testing equipment,stable production process and strict quality control system.
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