Comprehensive Introduction of Aluminium Grade and Aluminium Alloy Properties

In this article, you can learn in detail about the expression methods of aluminum alloy grades.
At the same time, you can learn about the influence of different alloying elements on the characteristics of aluminum alloys.
you can know how to choose which aluminum alloy grade for there different characteristics and application, read this guide to the end.

Aluminium is lighter in specific gravity, less rebound in forming, higher strength, close to or more than high-quality steel, good plasticity, product forming is more complex, easier to control than stainless steel, has excellent electrical conductivity, thermal conductivity and corrosion resistance, and at present, the surface treatment process of aluminium anodic oxidation, drawing, sandblasting and so on has been very mature, aluminium in the cell phone is also very much in use.

Based on the aluminium alloy processing method, it can be divided into deformed aluminium alloy and casting aluminium alloy, aluminium and aluminium alloy number is mainly divided into eight series

Alloy aluminium grade expression method

International grade (with four Arabic numerals, now commonly used method of expression):

1XXX for more than 99% pure aluminium series, such as 1050, 1100

2XXX means aluminium – copper alloy series, such as 2014

3XXX means aluminium – manganese alloy series, such as 3003

4XXX means aluminium-silicon alloy series, such as 4032.

5XXX indicates that it is aluminium-magnesium alloy series, such as 5052.

6XXX means aluminium-magnesium-silicon alloy series, such as 6061, 6063

7XXX means aluminium-zinc alloy series, such as 7001.

8XXX means alloy systems other than those mentioned above.

Series I (1000 Series)

Among all the series,  aluminium grade 1000 series belongs to the series with the most aluminium content, and the purity can reach over 99.00%. 1000 series aluminium plate determines the minimum aluminium content of this series according to the last two Arabic numerals, for example, the last two Arabic numerals of 1050 series are 50, and according to the principle of international brand naming, the aluminium content must reach over 99.5% to be qualified products.

I series of aluminium forming, surface treatment of good, in the aluminium alloy with the best corrosion resistance. Its strength is low, and the higher the purity, the lower the strength.  view dein aluminium 1000 series product

Series II (2000 Series)

Characterized by high hardness, but poor corrosion resistance, which is the highest content of copper primary genus,  aluminium grade 2000 series aluminium alloy on behalf of the 2024, 2A16, 2A02. 2000 series aluminium plate copper content in the 3%~5% or so.

2000 series aluminium bar belongs to the aviation aluminium, as the construction of the material used, currently in the conventional industry is not often used.

Series III (3000 Series)

3000 series aluminium bar is made of manganese element as the main component.  aluminium grade 3000 series aluminium alloy represents 3003, 3105 , 3A21 mainly. The content is 1.0~1.5, it is a series with better anti-rust function.

Commonly used for liquid products tanks, tanks, building processing parts, construction tools, a variety of lamps and lanterns parts, as well as thin plate processing of various pressure vessels and pipelines. The molding, solubility, and corrosion resistance are good. view 3000 series product

Series IV (4000 series)

Usually silicon content of 4.5% ~ 6.0%, silicon content of higher strength is relatively high, 4000 series of aluminium rods on behalf of the 4A01, 4000 series of aluminium plate belongs to the series of higher silicon content. Soup flow is good, solidification shrinkage is less, belongs to the building materials, mechanical parts, forging materials, welding materials; low melting point, good corrosion resistance, with heat-resistant, wear-resistant properties.

Series V (5000 Series)

5000 series aluminium bar belongs to the more commonly used alloy aluminium plate series, the main element is magnesium, containing magnesium in 3%~5%. 5000 series aluminium alloy represents 5052, 5005, 5083, 5A05 series. It can also be called aluminium-magnesium alloy. The main features are low density, high tensile strength and high elongation. In the same area under the weight of aluminium-magnesium alloy is lower than other series, in the conventional industry is also more widely used.

The most commonly used in cell phones is 5052, the most representative alloy for the medium degree of strength, corrosion resistance, solubility and good formability, especially high fatigue strength, seawater resistance, commonly used to do the strength of the products require high, but its coloring effect is less satisfactory, suitable for sandblasting process, not suitable for chemical sanding, matte surface, etc., the main use of casting molding molding methods, not suitable for extrusion molding.

5000 series  is widely used in shipboards, tanks, oil drums, like 5083, 5754, 5454. view 5000 series product

Series VI (6000 Series)

6000 Series aluminium Alloy represents 6061, 6000 series contains mainly magnesium and silicon two elements, concentrating the advantages of 4000 series and 5000 series, 6061 is a kind of cold treatment aluminium forging products, suitable for the application of corrosion-resistant, oxidation high requirements. It has good serviceability, easy coating and good workability. View 6000 Series product

Series VII (7000 Series)

Containing mainly zinc, 7000 series aluminium alloy stands for 7075. widely used in aviation, it is an aluminium-magnesium-zinc-copper alloy, which is a heat-treatable alloy and belongs to the super-hard aluminium alloy with good wear resistance. view 7000 series product

Series VIII (8000 series)

8000 series aluminium alloy is more commonly used for 8011 belongs to other series, most of the applications for aluminium foil, the production of aluminium rods are not very common

Alloying elements in aluminum alloys