1. Material |
No. |
Classificaiton |
Layer |
Alloy Number |
Cladding Ratio |
1.1 |
Non-cladding |
Core |
AA3003 |
- |
1.2 |
Cladding |
Outer cladding |
AA4343 |
8%-12% |
Core |
AA3003 |
- |
Inner cladding |
AA4343/7072 |
8%-12% |
2. Product size and tolerance |
No. |
Specification |
Size |
Tolerance |
2.1 |
Width (mm) |
15 to 50 |
within ±0.08 |
2.2 |
Height (mm) |
1.5 to 5 |
±0.06 |
2.3 |
Wall Thickness (mm) |
0.25 to 0.5 |
±0.015 |
3. Chemical composition for alloys |
No. |
AA number |
Chemical Composition (%) |
Si |
Fe |
Cu |
Mn |
Mg |
Zn |
Ti |
Zr |
Bi |
Others |
Al |
Each |
Total |
3.1 |
3003 |
0.6 |
0.7 |
0.05-0.2 |
1-1.5 |
0.05 |
0.1 |
|
|
|
0.05 |
0.15 |
RE |
3.2 |
4343 |
6.8-8.2 |
0.8 |
0.25 |
0.1 |
0.05 |
0.2 |
|
|
|
0.05 |
0.15 |
RE |
3.2 |
7072 |
0.7 |
0.1 |
0.1 |
0.1 |
0.1 |
0.8-1.3 |
|
|
|
0.05 |
0.15 |
RE |
4. Mechanical properties |
No. |
Alloy number |
Temper |
Yield Strength Rp0.2(Mpa). Min |
Tensile Strength Rm (Mpa) |
Elongation (%) A50,Min |
Typical usage |
4.1 |
3003 |
O |
35 |
95-135 |
10 |
Auto. Heat exchanger welded tube |
4.2 |
3003 |
H12 |
90 |
120-175 |
0.5 |
Auto. Heat exchanger welded tube |
4.3 |
3003 |
H14 |
125 |
145-200 |
0.5 |
Auto. Heat exchanger welded tube |
4.4 |
3003 |
H24 |
125 |
145-205 |
6 |
Auto. Heat exchanger welded tube |
4.5 |
4343 |
O |
35 |
95-150 |
8 |
Auto. Heat exchanger welded tube |
4.6 |
4343 |
H14 |
120 |
140-200 |
0.5 |
Auto. Heat exchanger welded tube |
5. Surface finish and other properties |
No. |
Item |
Description |
5.1 |
Surface finish |
a. shall be free from pinholes and tearing; b. shall be free from waves and buckles; c. shall be bright,clear from dirts |
5.2 |
Depth of Curvature |
In any length of 1 meter of the material,the depth of arc shall not exceed 2mm |
5.3 |
Twist |
In any length of 1 meter of the material,the depth of arc shall not exceed 1mm |
5.4 |
Flatness |
In any length of 1 meter of the material,the depth of arc shall not exceed 2mm |
5.5 |
Pressure tightness |
Over 3.7 Mpa |
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% variation with order quantity shall be acceptable |
7.Quality management and spot management |
No. |
Item |
Description |
7.1 |
Quality control |
1. Quality assurance a. Incoming material quality assurance; b. Process quality assurance; c. First sample quality assurance; d. Final quality assurance. 2. Process management-The right results are from the right process a. Production process card control; b. Standard operational procedure;c.Job certification;d. Quality chart monitor. 3. Equipment and facility management a. Periodic maintenance; b.Preventative maintenance. 4. Mold management a. Mold life management; b.Periodic and preventative maintenance; c. Periodic inspection. |
7.2 |
Inspection Tools |
Altimeter,Vernier caliper,Micrometer,3D coordinate measuring instrument |
7.3 |
Spot management |
"5S" management (sort,set in order,shine,standard,sustainable). |