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Aluminum Brazing Sheets

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Aluminum Brazing Sheet Sheets
 
Aluminum brazing sheet sheets is manufactured by roll-bonding techniques to clad a core alloy ingot on one side or both sides with a low melting AlSi alloy. As an alternative, one side can be clad with a non-braze alloy, e.g. Zn-containing alloy.
 
Depending on the desired final properties, the core is either homogenized or not before the cladding operation.
 
The whole package is subjected to preheating, hot rolling and cold rolling down to the final thickness of the respective products. Depending on the requested final properties, the material is subjected to final annealing and / or intermediate annealing operation(s).
 
The core provides structural integrity. It is common to use a variety of aluminium alloys, examples being AA 3xxx (AlMn), more particularly AA 3003, AA 3005, AA 3105 and modified versions of AA 3003 or AA3005 (long life alloys).

Specification and Data Sheet


Aluminum Brazing Sheet Sheets Dimensions  
  Strips  Sheets 
Thickness  0.051mm--3.0mm 0.4mm--6.35mm
Width  6mm--1600mm 500--1600mm
Length    Max. 10000mm
Edge quality  Trimmed  Trimmed and slit; sawn 
Inside diameter 305mm, 405mm, 505mm Paper core, Aluminium core,  without core.   
Outside diameter  Max. 1600mm without connect point 

Cladding 
Cladding  One side; Both sides 
Cladding rate  5%, 7.5%, 10%, 13%, 15% (other clad percentages available upon request)
Cladding tolerance  Cladding thickness of 1.5%--<4%: +/-0.6 

Cladding thickness of 4.0--6.0%: +/-1.0

Cladding thickness of 6.0--<=12.0%: +/-1.5

Cladding thickness of 12.0--20.0%: +/-2.0

 

Surface 
Quality  Mill finish; for thickness 0.3--3.5mm, chemically degreased
Marking  Ink marking 


1> Tolerance according to EN and ASTM.
2> Higher thickness on request. 
3> Special dimensions , tolerances, and alloys on request. 

 Aluminum Brazing Sheet Sheets Chemical composition 
SIGNI ALUMINIUM CLAD ALLOYS    Others
Alloy    Si Fe Cu Mn Mg Cr Zn Ti each total
Clad alloys for VCA-brazing according to EN573-3 
4004 Min.
max.
9.0
10.5
-
0.8
-
0.25
-
0.10
1.0
2.0
-
-
-
0.20
-
-
-
0.05
-
0.15
4104(Containing0.02%-0.20% Bi) Min.
max.
9.0
10.5
-
0.8
-
0.25
-
0.10
1.0
2.0
-
-
-
0.20
-
-
-
0.05
-
0.15
Clay alloys for CAB-brazing according to EN573-3 
4343 Min.
max.
6.8
8.2
-
0.8
-
0.25
-
0.10
-
-
-
-
-
0.20
-
-
-
0.05
-
0.15
4045 Min.
max.
9.0
11.0
-
0.8
-
0.30
-
0.05
-
0.05
-
-
-
0.10
-
0.20
-
0.05
-
0.15
4047A Min.
max.
11.0
13.0
-
0.6
-
0.30
-
0.15
-
0.10
-
-
-
0.20
-
0.15
-
0.05
-
0.15
Zn-containing clad alloys for CAB-brazing 
4343.ZN Min.
max.
6.8
8.2
-
0.8
-
0.25
-
0.10
-
-
-
-
0.8
1.2
-
-
-
0.05
-
0.15
4045.ZN Min.
max.
9.0
11.0
-
0.8
-
0.30
-
0.05
-
0.05
-
-
0.8
1.2
-
0.20
-
0.05
-
0.15
Clad alloys for corrosion protection according to EN573-3 
1050A Min.
max.
-
0.25
-
0.40
-
0.05
-
0.05
-
0.05
-
-
-
0.07
-
0.05
-
0.03
-
-
7072 Min.
Max.
-
0.7(Si+Fe)
-
0.10
-
0.10
-
0.10
-
-
0.8
1.3
-
-
-
0.05
-
0.15
All data in Wt.-%;   Customer specific alloy composition on request.
3××× alloys according to EN573-3 and ASTM  3××× 
3003 Min.
max.
-
0.6
-
0.7
0.05
0.25
1.0
1.5
-
-
-
-
-
0.10
-
-
-
0.05
-
0.15
3004 Min.
max.
-
0.30
-
0.70
-
0.25
1.0
1.5
0.8
1.3
-
-
=
0.25
-
-
-
0.05
-
0.15
3005 Min.
max.
-
0.6
-
0.70
-
0.30
1.0
1.5
0.20
0.6
-
0.10
-
0.25
-
0.10
-
0.05
-
0.15
3103Containingmax.0.10%(Zr+Ti)  Min.
Max.
-
0.50
-
0.70
-
0.10
0.9
1.5
-
0.30
-
0.10
-
0.20
-
-
-
0.05
-
0.15
3105 Min.
Max.
-
0.6
-
0.7
-
0.30
0.30
0.80
0.20
0.80
-
0.20
-
0.40
-
0.10
-
0.05
-
0.15
   5×××-non-heat-treatable alloys according to EN573-3 and ASTM 5××× 
5049 Min.
max.
-
0.40
-
0.50
-
0.10
0.50
1.10
1.60
2.50
-
0.30
-
0.20
-
0.10
-
0.05
-
0.15
5052 Min.
max.
-
0.25
-
0.40
-
0.10
-
0.10
2.2
2.8
0.15
0.35
-
0.10
-
-
-
0.05
-
0.15
5083 Min.
max.
-
0.40
-
0.40
-
0.10
0.40
1.0
4.0
4.9
0.05
0.25
-
0.25
-
0.15
-
0.05
-
0.15
   6×××-non-heat-treatable alloys according to EN573-3 and ASTM 6×××
6063 Min.
max.
0.20
0.60
-
0.35
-
0.10
-
0.10
0.45
0.90
-
0.10
-
0.10
-
-
-
0.05
-
0.15
6951 Min
max.
0.20
0.50
-
0.08
0.15
0.40
-
0.10
0.40
0.8
-
-
-
0.20
-
-
-
0.05
-
0.15
7×××-non-heat-treatable alloys according to EN573-3 and ASTM 7×××
7020
 
 
Containing 0.08%-0.25% (Zr+Ti) and 0.08%--0.20% Zr
Min.
max.
-
0.35
-
0.40
-
0.20
0.05
0.50
1.0
1.4
0.10
0.35

 
4.0
5.0
-
-
-
0.05
-
0.15

 
Aluminum Brazing Sheet Sheets Physical Property Data of Strip Material 
Alloy Temper Thickness
(mm)
Tolerance
(mm)
Clad Ratio
(%)
Tensile 
Strength
(MPa)
Yield
Strength
(MPa)
Elongation
(%)
Min
Application
3003 H14 0.08~0.12 ±0.005 None 150~200 ≥120 1 Evaporator fin
 and plate 
3003 H26 0.3~0.35 ±0.015 None 190~220 ≥160 8 Glass mounting
 bracket materia
3003 H14 0.06~0.1 ±0.005 None 150~200 ≥120 1 Radiator fin 
and plate 
4343/3003/
4343
H14 0.06~0.1 ±0.005 8~12 150~200 ≥120 1
4343/3003/
4343
H14 0.08~0.12 ±0.005 8~12 150~200 ≥120 1 Parallel 
condenser fin 
4343/3003/
4343
H14 0.1~0.12 ±0.005 8~12 150~120 ≥120 1 Charge air 
cooler material 
4045/3003/
4045
H14 0.1~0.12 ±0.005 8~12 150~200 ≥120 1
1060 O 0.35~0.4 ±0.02 None 55~95 ≥15 25 Air cooling fin 
material for tubes 
1100 O

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