1. Aluminum alloy number 

No.

Classificaiton

Layer

Alloy Number

Cladding ratio

Ratio tolerance

1.1

Single side cladding

Layer 1

4004,4045,4104,4343,7072

4%-30%

±2%

Core

AA3003

NA

NA

2. Product size and tolerance 

No.

Item

Size

Tolerance

2.1

Length (mm)

500-6000

±2

2.2

Width (mm)

450-1300

±1

2.3

Thickness (mm)

0.1-4

min ±0.005,max ±0.08

3. Chemical composition for some typical alloys 

No.

Internal
Alloy Number

AA number

Chemical Composition (%)

Si

Fe

Cu

Mn

Mg

Zn

Ti

Zr

Bi

Others

Al

Each

Total

3.1

3003

3003

0.6

0.7

0.05-0.2

1-1.5

0.05

0.1

0.05

0.15

RE

3.2

4004

4004

9.0-10.5

0.8

0.25

0.1

1.0-2.0

0.2

0.05

0.15

RE

3.3

4045

4045

9.0-11.0

0.8

0.3

0.05

0.05

0.1

0.05

0.15

RE

3.4

4104

4104

9.0-10.5

0.8

0.25

0.1

1.0-2.0

0.2

0.05-0.2

0.05

0.15

RE

3.5

4343

4343

6.8-8.2

0.8

0.25

0.1

0.05

0.2

0.05

0.15

RE

3.6

4343A

4343A

6.8-8.2

0.6

0.1

0.1

0.02

0.1

0.05

0.15

RE

3.7

7072

7072

0.7

0.1

0.1

0.1

0.1

0.8-1.3

0.05

0.15

RE

3.8

4343+1%Zn

4343+1%Zn

9.0-11.0

0.8

0.25

0.1

0.05

0.7-1.3

0.05

0.15

RE

3.9

4045+1%Zn

4045+1%Zn

9.0-11.0

0.8

0.3

0.05

0.05

1.7-1.3

0.05

0.15

RE

4. Mechanical properties for some typical alloys 

No.

Alloy number

Thick.
(mm)

Temper

Yield Strength
Rp0.2(Mpa).
Min

Tensile Strength
Rm (Mpa)

Elongation
(%)
A50,Min

Typical usage

4.1

3003

0.08-0.15

O

35

95-135

8

Fins

4.2

3003

0.16-0.35

O

35

95-135

10

Fins

4.3

3003

0.15-0.3

H12

90

120-175

0.5

Fins

4.4

3003

0.06-0.08

H14

125

145-185

0.5

Fins

4.5

3003

0.081-0.3

H14

125

145-200

0.5

Fins

4.6

3003

0.06-0.16

H16

160

165-205

0.5

Fins

4.7

3003

0.2-0.3

H24

125

145-205

6

Fins

4.8

3003-1

0.35-3.0

O

35

95-135

20

Plate

4.9

3003-1

0.40-3.0

H14

125

145-185

3

Plate

4.10

3003-1

1.0-3.0

H24

125

145-185

10

Plate

4.11

4343

0.07-3.0

O

35

95-150

8

Sheet for brazing

4.12

4343

0.07-3.0

H14

120

140-200

0.5

Sheet for brazing

4.13

4045

0.07-3.0

O

35

95-150

8

Sheet for brazing

4.14

4045

0.07-3.0

H14

120

140-200

0.5

Sheet for brazing

4.15

4104

0.07-3.0

O

35

95-150

8

Sheet for brazing

4.16

4104

0.07-3.0

H14

120

140-200

0.5

Sheet for brazing

4.17

3003

0.25-0.35

H24

130

155-205

6

Fins for air cooler

4.18

3003

0.1-0.2

H14

125

145-185

1

Fins

4.19

3003

0.1-0.3

O

35

95-135

10

Fins

4.20

3003

0.3-0.8

H14

125

145-185

2

Plate

4.21

3003

0.8-2.5

H14

125

145-185

4

Plate

4.22

3003

0.5-1.6

O

35

145-185

20

Plate

4.23

3003-1

0.3-1.8

O

35

95-135

20

Band

4.24

3003-1

0.5-4.0

O

35

95-135

25

Plate

5. Surface finish and other properties 

No.

Item

Description

5.1

Surface finish

a. The material shall bright finish; b. The material shall be from pinholes and tearing

5.2

Diagonal Variation

The sheets shall not have any diagonal outs beyond 0.5mm

5.3

Bend test

There shall be no sign of cracking or peeling off effect while longitudinal or transverse or close bends of 180 or angular.

6. Packing,Shipping and others 

No.

Item

Description

6.1

Packing

To be packed in wooden crate with polythene cover for water protection

6.2

Marking

Each box to be legibly marked with the name of the manufacturer or supplier, the alloy designation of material,condition,dimensions and weight

6.3

Shipping tools

Ship goods by van to departune port then by sea to desitination port

6.4

Quantity variation

±10% quantity variation with order quantity shall be acceptable