ER 4043 (AlSi5) Aluminium Welding Wire
ER 4043 (AlSi5) Aluminium Welding Wire ER 4043 (AlSi5) Aluminium Welding Wire

Welding Consumables

ER 4043 (AlSi5) Aluminium Welding Wire

Aluminium-silicon filler metal for MIG and TIG welding of 6000 series aluminium and cast alloys
  • Chemical Designation: AlSi5
  • Standard: AWS A5.10, GB/T10858-2023
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Chemical Composition (%)
Si Fe Cu Mn Mg Zn Ti AL Be Others
Each Total
4.5-6.0 ≤0.8 ≤0.30 ≤0.05 ≤0.05 ≤0.10 0.20 Rest 0.0003 ≤0.05 ≤0.15
Mechanical Properties
  • Tensile Strength (MPa): ≥165
  • Yield Strength (MPa): ≥70
  • Elongation (%): ≥4
Features
  • Contains 5% silicon, making it ideal for welding 6xxx series aluminium alloys and cast materials
  • Offers excellent flow characteristics, helping achieve smooth, well-formed welds
  • Known for its versatility and strong resistance to hot cracking during welding
Available Sizes
  • Welding wire: 0.8/1.0/1.2/1.6/2.0/2.4/3.0/3.2/4.0/5.0/6.0mm
  • Spool: D300 (9kg), D270 (7kg), D200 (2kg), D100 (0.5kg)
Applications
  • Commonly used in the automotive industry for welding aluminium radiators, intercoolers, and heat exchangers
  • Suitable for fabricating container truck bodies where strong, consistent welds are needed
  • Frequently applied in the assembly of aluminium bicycle frames and sports equipment
  • Ideal for joining refrigeration-related aluminium parts that require corrosion resistance
  • Works well for welding and repairing cast aluminium alloys
  • A good choice for welding aluminium housings and structural casings
  • Suitable for base metals like 6061, 6063 and other 6xxx series aluminium alloys
Applications
Applications
Applications
Packaging
Packaging
  • MIG wire diameter: 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm
  • Package: D300 (9kg/spool), D270 (7kg/spool)
Packaging
  • MIG wire diameter: 1.2mm, 1.6mm
  • Package: drum D660 (100kg/drum)
Packaging
  • TIG wire diameter: 2.0mm, 2.4mm, 3.0mm, 3.2mm, 4.0mm, 5.0mm, 6.0mm
  • Package: 1000mm length (10kg/box)
Packaging
  • TIG wire diameter: 1.6mm, 2.0mm, 2.4mm, 3.0mm, 3.2mm, 4.0mm, 5.0mm, 6.0mm
  • Coil inner diameter: D450mm, D300mm
  • Package: 10-17kg/coil
Recommended Welding Method

This aluminium-silicon wire performs best with AC TIG or MIG welding under pure argon shielding. For optimal results, the area to be welded should be thoroughly cleaned before welding. Keep both the welding wire and workpiece dry, and avoid exposing them to moisture or contaminants.

Recommended Welding Method
Why Choose Us
Why Choose Us
  • In-Depth Experience
    1. We’ve specialized in aluminium and titanium welding wire for over 35 years.
    2. Our manufacturing facility includes 6 processing workshops, over 60 production machines, and more than 50 production lines.
    3. We’ve supplied products and services to over 5,000 clients in 15 countries.
  • Premium Quality
    1. We are certified by ISO9001:2015 and GJB9001C-2017.
    2. The welding wires we offer are approved by CE, DB (German Railway), CCS (China Classification Society), VdTÜV (Germany), and SGS.
    3. A CNAS-accredited lab provides technical support and welding process evaluation.
  • On Time Delivery
    1. Customized packaging option are available with delivery lead times between 3 to 15 days
    2. We keep 280 tons of finished inventory and have an annual production capacity of 3,000 tons.
    3. Our technical team offers free welding consultations, tailored solutions, and 24-hour after-sales service.
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