ER4047 Aluminum Mig Welding Wire

ER4047 aluminum alloy MIG welding wire is a welding material widely used in aluminum welding and belongs to the aluminum alloy welding wire series. It is mainly used in the MIG (metallurgical gas shielding) welding process of aluminum and aluminum alloys. The characteristics of ER4047 welding wire are that it can provide excellent weld appearance and performance during the welding process and is suitable for welding applications of various aluminum alloys.

Parameters and characteristics of ER4047 aluminum alloy MIG welding wire

Chemical composition
ER4047 is an aluminum-silicon alloy welding wire synthesized with aluminum as the base material, silicon (Si) and a small amount of other elements (such as copper, magnesium, etc.). Its main chemical composition is as follows:

Aluminum (Al): balance
Silicon (Si): 11.0-13.0%
Iron (Fe): ≤0.30%
Copper (Cu): ≤0.05%
Magnesium (Mg): ≤0.05%
Manganese (Mn): ≤0.10%
Titanium (Ti): ≤0.15%
Chromium (Cr): ≤0.05%

Mechanical properties
Tensile strength: 280-310 MPa
Yield strength: 180-220 MPa
Elongation: 10%-15%
Hardness: HRC 45-50

Welding performance
Good fluidity, less spatter during welding, less cleaning work after welding
Good crack resistance and low thermal cracking tendency
The weld surface is smooth, and it is not easy to produce pores or welding defects after welding
Can be welded at a lower current, suitable for welding of thin plates

Welding application scenarios
ER4047 aluminum alloy MIG welding wire is widely used in the welding of various aluminum alloy materials. The main application scenarios include:

Automobile manufacturing and repair: used for welding aluminum alloy body, frame, engine parts, etc.

Aerospace: suitable for welding aluminum alloy structural parts of aircraft and other aircraft.

Shipbuilding: suitable for welding aluminum alloy hulls, interior cabins and other parts.

Construction and decoration industry: used for welding of aluminum alloy doors and windows, curtain walls, building facades and other structures.

Pressure vessels and boilers: used for welding of aluminum alloy pressure vessels, heat exchangers, steam generators and other equipment.

Pipeline and tank manufacturing: used for the connection of aluminum alloy pipes and tanks.

Applicable aluminum alloy materials
ER4047 welding wire is commonly used to weld the following types of aluminum alloys:

2xxx series (aluminum-copper alloy)

6xxx series (aluminum-silicon-magnesium alloy)

7xxx series (aluminum-zinc alloy)

Particularly suitable for welding aluminum alloys with higher silicon content, such as aluminum-silicon alloy (commonly used in aluminum castings), which makes it excellent in welding certain high-strength aluminum alloys.

Welding current range
The welding current of ER4047 welding wire is usually between 100A and 250A, depending on the thickness of the material and the specific requirements of the welding. For thin plate materials, lower currents can be used.

Advantages and characteristics of ER4047 welding wire

Low welding spatter: Due to the high silicon content, there is less spatter during welding, which reduces the post-cleaning work.

Improve weld crack resistance: The high silicon content greatly reduces the thermal cracking during welding, which is suitable for welding high-strength aluminum alloys.

Smooth welding surface: The weld surface is relatively smooth, the welding quality is good, and the weld appearance is beautiful.
Strong adaptability: ER4047 welding wire is suitable for aluminum alloy materials of various thicknesses and can provide reliable welding performance.