ER 4010 (AlSi7Mg) Aluminium Welding Wire Manufacturer

ER 4010 (AlSi7Mg) Aluminium Welding Wire

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Welding Consumables

Aluminium-silicon filler metal for MIG and TIG welding and repairing of aluminium alloyed with silicon

Chemical Designation: AlSi7Mg
Standard: AWS A5.10, GB/T10858-2023

Chemical Composition (%)

Si	Fe	Cu	Mn	Mg	Zn	Ti	Al	Be	Others
									Each	Total
6.5-7.5	≤0.20	≤0.20	≤0.10	0.30-0.45	≤0.10	≤0.20	Rest	≤0.0003	≤0.05	≤0.15

Features

Designed for welding aluminium-silicon alloys, especially those requiring good strength, toughness, and fatigue resistance
Commonly used in high-speed rail systems for welding joints and fastening components
Delivers stable mechanical performance and durable welds in demanding transport applications

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

Used in railway and high-speed rail systems for welding critical components such as rail joints and fastening assemblies
Suitable for joining and repairing aluminium structures that demand high strength, toughness, and fatigue resistance

Packaging

Spooled welding wire
Drum packaged welding wire
Straight welding wire
Coiled welding wire

MIG wire diameter: 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm
Package: D300 (9kg/spool), D270 (7kg/spool)

MIG wire diameter: 1.2mm, 1.6mm
Package: drum D660 (100kg/drum)

TIG wire diameter: 2.0mm, 2.4mm, 3.0mm, 3.2mm, 4.0mm, 5.0mm, 6.0mm
Package: 1000mm length (10kg/box)

TIG wire diameter: 1.6mm, 2.0mm, 2.4mm, 3.0mm, 3.2mm, 4.0mm
Coil inner diameter: D450mm, D300mm
Package: 10-17kg/coil

Recommended Welding Method

For best results, this welding wire should be used with MIG or TIG welding processes, ideally under AC current with pure argon shielding gas. Before starting, make sure the weld area is thoroughly cleaned and that both the workpiece and welding wire are completely dry and free from contaminants.