4A45 brazing aluminum sheet foil coil strip is one of the A-Si series near eutectic alloys. The alloy grade 4045+1%Zn is changed to 4A45. It has more excellent welding performance, good wear resistance, high corrosion resistance and other advantages. In addition, it has a low melting point, narrow solidification range, and good fluidity, which is conducive to the shrinkage and cracking tendency of the weld during solidification....
1.The Introduction of 4A45 brazing aluminum sheet foil coil strip
4A45 brazing aluminum sheet foil coil strip is one of the A-Si series near eutectic alloys. The alloy grade 4045+1%Zn is changed to 4A45. It has more excellent welding performance, good wear resistance, high corrosion resistance and other advantages. In addition, it has a low melting point, narrow solidification range, and good fluidity, which is conducive to the shrinkage and cracking tendency of the weld during solidification. It is often used as an aluminum alloy brazing material, as well as the cladding layer of composite plates and composite fins. The typical brazing alloy combination is 4A45/3A11/4A45, 4A45/3003/4A45.
2.The Specification of 4A45 brazing aluminum sheet foil coil strip
*Alloy: 4A45
*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 4A45 brazing aluminum sheet foil coil strip
|
4A45 Chemical Composition(%) |
|||||||||
|
Si |
Fe |
Cu |
Mn |
Mg |
Cr |
Zn |
Ti |
Ni |
Alu |
|
9.0--10.0 |
<0.8 |
<0.30 |
<0.05 |
<0.05 |
-- |
0.50--1.5 |
<0.20 |
-- |
Remainder |
4.The Mechanical properties of 4A45 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 |
|||||
|
4A45 |
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 4A45 brazing aluminum sheet foil coil strip
A: It has better welding performance.
B: It has the advantages of good wear resistance and high corrosion resistance.
C: It has a low melting point, a narrow solidification range, and good fluidity, which is conducive to the shrinkage and cracking tendency of the weld during solidification.
D: The aluminum heat transfer material produced with this alloy has the characteristics of high yield and high production efficiency.
6.The Usage of 4A45 brazing aluminum sheet foil coil strip
4A45 brazing aluminum sheet foil coil strip is often used as aluminum alloy brazing materials, as well as the clad layer of composite plates and composite fins, and is widely used in brazing processes, automotive industry, aerospace industry and household appliances.
