4A13 brazing aluminum sheet foil coil strip belongs to Al-Si brazing alloy,the higher the Si content in the brazing alloy, the better the brazing performance, but the corresponding price is also higher. The Si content of 4A13 alloy is lower than Si content of other brazing materials, which makes its price relatively cheap, so 4A13 alloy has become the first choice for users. However, in order to increase the welding rate of the brazing material, the Si content is taken as the upper limit....
1.The Introduction of 4A13 brazing aluminum sheet foil coil strip
4A13 brazing aluminum sheet foil coil strip belongs to Al-Si brazing alloy,the higher the Si content in the brazing alloy, the better the brazing performance, but the corresponding price is also higher. The Si content of 4A13 alloy is lower than Si content of other brazing materials, which makes its price relatively cheap, so 4A13 alloy has become the first choice for users. However, in order to increase the welding rate of the brazing material, the Si content is taken as the upper limit.
In addition, in brazing materials, it is usually necessary to control the Fe content that can form a compound with Si. Adding Fe can reduce the corrosion of the brazing layer by the brazing material and transform the Al-Si eutectic into Al-Si-Fe eutectic , to increase the mass point of Si and its compound, thereby increasing the welding rate of the radiator.
2.The Specification of 4A13 brazing aluminum sheet foil coil strip
*Alloy: 4A13
*Temper: O,H12,H22,H14,H24,H16,H26,H18,F,H112 etc
*Thickness: 0.05mm~6mm
*Sheet width: 450mm -2200mm; coil width: 5mm-2200mm
*Length: 500-15000mm or Coiled, coil outer diameter: Max 2500mm
*Delivery shape: aluminum foil: 0.05mm~0.20mm; plate shape; Coil shape; Strip shape
*Inner diameter of coils: 75mm, 76mm, 150mm, 152mm, 200mm, 250mm, 300mm, 405mm, 505mm
Paper core or aluminum core, outer diameter according to customer requirements.
3.The Chemical composition of 4A13 brazing aluminum sheet foil coil strip
|
4A13 Chemical Composition(%) |
|||||||||
|
Si |
Fe |
Cu+ Zn |
Mn |
Mg |
Cr |
Ca |
Ti |
Ni |
Alu |
|
6.8--8.2 |
<0.50 |
<0.15 |
<0.50 |
<0.05 |
-- |
<0.10 |
<0.15 |
-- |
Remainder |
4.The Mechanical properties of 4A13 brazing aluminum sheet foil coil strip
|
Alloy |
Temper |
Thickness (mm) |
Mechanical properties |
||
|
Tensile Strength（Mpa） |
Yield strength （Mpa） |
Elongation (%) |
|||
|
standard value |
standard value |
A50 |
|||
|
Not less than |
|||||
|
4A13 |
O |
0.05-0.5 |
90-140 |
35 |
5 |
|
＞0.5-3.0 |
10 |
||||
|
H12 H22 |
0.05-0.5 |
120-170 |
100 |
2 |
|
|
＞0.5-3.0 |
3 |
||||
|
H14 H24 |
0.05-0.5 |
140-190 |
120 |
1 |
|
|
＞0.5-3.0 |
1 |
||||
|
H16 H26 |
0.05-0.5 |
160-210 |
140 |
0.5 |
|
|
＞0.5-3.0 |
1 |
||||
|
H18 |
0.05-0.5 |
180 |
160 |
0.2 |
|
|
＞0.5-3.0 |
1 |
||||
5.The Performance advantages of 4A13 brazing aluminum sheet foil coil strip
A: 4A13 brazing aluminum sheet foil coil strip can reduce the fusion point of the alloy, thereby reducing the temperature of vacuum brazing and enhancing its strength.
B: 4A13 brazing aluminum sheet foil coil strip has good brazing properties and can be moved under vacuum brazing conditions to ensure that the weld seam is full and improve the quality of vacuum brazing.
C: 4A13 brazing aluminum sheet foil coil strip is not only suitable for gas shielded welding, but also for vacuum brazing, with a welding rate of over 90%.
6.The Usage of 4A13 brazing aluminum sheet foil coil strip
4A13 brazing aluminum sheet foil coil strip can be used as plate and strip brazing materials for the welding of radiators and the brazing layer of radiator brazing plates and foils.
