24 July 2021 4000 Series Aluminum Alloy
4043 Aluminum Alloy Bar
4043 aluminum alloy has the characteristics of low melting point, good fluidity, and good corrosion resistance, which is very beneficial to avoid welding cracks and is specially used as welding material. 4000 series aluminum alloys (Al-Si series) are typically 4043 and 4343 aluminum alloys, which are specially used as welding materials.
4043 aluminum alloy has the characteristics of low melting point, good fluidity, and good corrosion resistance, which is very beneficial to avoid welding cracks. 4343 aluminum alloy has a higher Si content than 4043 aluminum alloy. It has the characteristics of low melting point, narrow solidification range, and good fluidity. It is beneficial to the shrinkage of the welding seam during solidification to reduce cracks. It is used as a composite brazing plate coating layer. .
Chemical Composition:
Aluminum Al (minimum): balance
Silicon Si: 4.5~6.0
Iron Fe: ≤0.8
Copper Cu: ≤0.30
Manganese Mn: ≤0.05
Magnesium Mg: ≤0.05
Zinc Zn: ≤0.10
Titanium Ti: ≤0.20
Other elements not specified: each type: ≤0.05; total: ≤0.15