ER 4047 Aluminium Welding Wire | Aluminium-Silicon Filler Metal

Welding Consumables

ER 4047 (ALSi12) Aluminium Welding Wire

Aluminium-silicon filler metal for MIG and TIG welding of aluminium-silicon alloys

Chemical Designation: ALSi12
Standard: AWS A5.10, GB/T10858-2023

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Chemical Composition (%)

Si	Fe	Cu	Mn	Mg	Zn	Al	Be	Others
								Each	Total
11.0-13.0	≤0.8	≤0.30	≤0.15	≤0.10	≤0.20	Rest	≤0.0003	≤0.05	≤0.15

Mechanical Properties

Tensile Strength (MPa): ≥170
Yield Strength (MPa): ≥80
Elongation (%): ≥4

Features

Contains 12% silicon, providing excellent fluidity during welding
Lower melting temperature helps minimize distortion in thin materials
Good for filling wide or irregular gaps and reducing the risk of hot cracking

Available Sizes

Welding wire: 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

Automotive aluminium radiator, intercooler, and heat exchanger welding
Window frame assembly for aluminium passenger buses
Bicycle frame fabrication
General aluminium part repair and maintenance

Packaging

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, 5.0mm, 6.0mm
Coil inner diameter: D450mm, D300mm
Package: 10-17kg/coil

Recommended Welding Method

For optimal results, this type of welding wire is commonly used in brazing with an oxy-fuel torch. Pair it with 201 aluminium flux to enhance flow and bonding quality.

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.