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About aluminum

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Aluminum is mainly used in the pure form of aluminum alloys to combine with other elements to improve the mechanical properties of metals, especially metals that increase strength and resistance to corrosion.

Combine different elements to promote different characteristics of the finished product:

→ The strength of iron increases

Combined with silicon → high strength magnesium

→ Increase the mechanical properties of copper and reduce the corrosion resistance

Manganese → improve mechanical properties, change the quality of deep drawing

Magnesium → after high strength cold forming

Chromium → More powerful elements such as copper, manganese, and magnesium

→ High strength titanium

Zinc → reduces corrosion resistance



Main Aluminium-Alloy Family Groups

A series of

Its main content is alloy

Typical Applications

 1XXX  

Aluminum more than 99.00%

 Foil, rock sheet, sheet

2XXX 

Aluminum bronze

Aircraft manufacturing industry

3XXX

Aluminum manganese

Cans, building radiators

4XXX 

Aluminum, silicon 

Heat exchangers and engineering

5XXX 

Heat exchangers and engineering

Cans, cars, facades, buildings, transportation

6XXX

Aluminum, Magnesium Silicon Co., LTD

Cars, construction, transportation

7XXX

 Aluminum, zinc

Aircraft manufacturing, radiators

8XXX

Other Elements

 Aluminum foil (iron), Aircraft Industry (Li)


Aluminum alloy coil coating

Generally speaking, aluminum coil coatings with alloys from 1001,3003,5005 alloys. The choice of alloy, gauge and temper will depend on the specific application, optimizing the balance required for strength and formability products.


For example:

AA3005 H48 is used for rolling brake. Among them, 3005 refers to the use of 0.5% manganese alloy and 0.5% magnesium, while H48 specifies that the cold-rolled (high) painting (4) product has 75% residual hardening (6). This is usually used with a thickness of 0.3mm


AA5754 H42 for exterior walls. Here, 5754 refers to allowing 3% with magnesium, while H42 specifies that the cold-rolled (high) painting (4) product has 15% residual hardening (6).


Alloys fall into two broad categories. Strain hardened alloys, where the strength is determined by the "cold work" applied to the alloy, heat can be treated or precipitated to harden the alloy, where the strength and properties are obtained by amounts of heat treatment with varying degrees of complexity.


The name and definition of temper are as follows:

Preparation in degrees Fahrenheit

• øAnnealing

• H strain hard

• W solution heat treatment

• Heat treatment to produce a stable temper than F, O or H. other


Consider the strain hardening with a H temper, where the first number denotes a specific operation. To be specific,

• H1X strain hardening only

• H2X strain hardening and partial annealing

• H3X strain hardened and stabilized

• H4X strain hardening paint or painting.


Therefore, H4X temper in coil coatings prevail.

The final number indicates the tensile strength:

• HX2 has 15% residual hardening

• HX4 has 35% residual hardening

• 55% residual hardening of HX6

• 75% residual hardening of HX8


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