Aluminum Alloy Welding Wire ER4047
ER4047 is the eutectic aluminum silicon alloy welding wire with approximately 12% Si element. It is well-known for its low melting point and excellent fluidity, making it suitable for Al-Si, Al-Si-Mg, and Al Si Mg Cu wrought aluminium.
1 APPLICATION
Used for jointing or overlay light alloy processing. It is also widely used as filler materials in argon arc welding and oxyacetylene gas welding. Argon arc welding is a perfect method for welding copper aluminum alloy. While argon arc welding does not require flux, oxyacetylene gas welding needs to use aluminum gas welding flux. The selection of welding wire depends on the base metal type and requirements for crack resistance, mechanical properties, and corrosion resistance.
2 CHARACTERISTICS
- Welding Filler Wire
- Spray and Flame Metallizing Wire
- Similar to AlSi12 (Germany), BS N21 (United Kingdom)
- Lower melting point and higher fluidity than 4043 wires
- Can be used as a substitute for 4043 wires to increase silicon in the weld metal
- Minimizes hot cracking and produces higher fillet weld shear strength
- Widely used for brazing of aluminum, Al-Mn, Al-Si-Mg alloy materials
3 SPECIFICATIONS
MIG Welding Wire
0.6mm; 0.8mm; 0.9mm; 1.0mm; 1.2mm; 1.6mm
TIG Welding Rod
1.2mm; 1.6mm; 2.0mm; 2.4mm; 3.0mm; 4.0mm
4 CHEMICAL COMPOSITION
Typical Chemical Composition of Deposited Metal:
| Cu |
Si |
Fe |
Mn |
Mg |
Cr |
Zn |
Ti |
Al |
| 0.3 |
11.0-13.0 |
0.80 |
0.15 |
0.10 |
0.05 |
0.20 |
- |
Rem |
Frequently Asked Questions
Q1: What are the primary applications of ER4047 aluminum welding wire?
ER4047 is primarily used for jointing or overlaying light alloy processing, and it's widely used in argon arc welding and oxyacetylene gas welding for Al-Si and Al-Si-Mg alloys.
Q2: How does ER4047 compare to ER4043?
ER4047 has a higher silicon content (approx. 12%), a lower melting point, and higher fluidity than 4043. It is often used to minimize hot cracking and provide higher shear strength in fillet welds.
Q3: Is flux required when welding with ER4047?
When using argon arc welding, flux is not required. However, for oxyacetylene gas welding, aluminum gas welding flux must be used.
Q4: What are the international equivalents for ER4047?
ER4047 is similar to Germany's AlSi12 and the United Kingdom's BS N21 specifications.
Q5: Which diameters are available for MIG and TIG welding?
MIG wires range from 0.6mm to 1.6mm, while TIG rods are available in diameters from 1.2mm up to 4.0mm.
Q6: Why is ER4047 preferred for brazing?
Due to its high silicon content and excellent fluidity, it is highly effective for brazing aluminum, Al-Mn, and Al-Si-Mg alloy materials.
Tianqiao Welding
