4043 aluminum round bars

Characteristics and applications of 4043 aluminum round bars

Typical representatives of 4000 series aluminum alloys (Al Si series) are 4043 and 4343 aluminum alloys, which are specially used as welding materials. 4043 aluminum round bars has the characteristics of low melting point, good fluidity and good corrosion resistance, which is very beneficial to avoid welding cracks. The Si content of 4343 aluminum alloy is higher than that of 4043 aluminum alloy. It has the characteristics of low melting point, narrow solidification range and good fluidity. It is conducive to feeding and stepping during weld solidification and reducing cracks. 4043 aluminum round bars is used as the cladding layer of composite brazing plate.
 

Standard comparison of 4043 aluminum round bars

American Aluminum Association (AA) 4043, UNS a94043, ISO r209 AlSi5; China GB 4a01 (LT1); Japan JIS a4043; Canadian CSA S5; France NF a-s5; British BS 4043a (N21); Russia Г OCT (AK)； International ISO 4043 (AlSi5); Germany DIN AlSi5

Chemical composition of 4043 aluminum round bars:

• Al (Zui small value): allowance
• Si: 4.5 ~ 6.0
• Fe: ≤ 0.8
• Cu: ≤ 0.30
• Mn: ≤ 0.05
• Mg: ≤ 0.05
• Zn: ≤ 0.10

4043 aluminum round bars has the characteristics of low melting point, good fluidity and good corrosion resistance. It is very beneficial to avoid welding cracks. 4043 aluminum round bars is specially used as welding material.