What is the grade of aluminum

What is it?

Aluminum grades are a way of classifying and identifying aluminum and aluminum alloy products, which are named based on the alloy’s main components, performance characteristics and uses. Below are some detailed explanations of aluminum grades and their characteristics:

Naming rules for aluminum grades:

Aluminum grade number usually consists of four digits and one or two letters:

 

1xxx series aluminum:

Indicates more than 99% pure aluminum series, such as 1050, 1060, etc.. The last two digits of the grade indicate the minimum aluminum percentage content, such as 1050 series, whose aluminum content is at least 99.5%.

 

2XXX series aluminum:

It is a series of aluminum-copper alloys. These alloys usually have high strength and hardness, but poor corrosion resistance. Its copper content: 3.8% – 4.9%. This type of aluminum is used to make screws or aerospace parts.

 

3XXX Series Aluminum:

It is a series of aluminum-manganese alloys. It contains more than 90% aluminum and 3-5% manganese. These alloys have good formability and corrosion resistance and are commonly used in food processing, chemicals and construction.

 

Aluminum 4XXX series:

It denotes a series of aluminum-silicon alloys, represented by the aluminum alloy 4032. It has a silicon content of 0.8% and an aluminum content of over 96%. These alloys have good abrasion and heat resistance and are commonly used in the manufacture of components such as pistons and cylinders.

 

5XXX Series Aluminum:

This is a series of aluminum-magnesium alloys. Its magnesium content: 2% – 7%. These alloys have low density, good corrosion resistance and weldability and are widely used in aerospace, shipbuilding and automotive parts.

 

6XXX Series Aluminum:

It is a series of aluminum-magnesium-silicon alloys. Common grades include aluminum alloys 6061 and 6063, which have magnesium: 0.5% – 1.5%, silicon: 0.4% – 0.8%, and manganese: 0.15% – 0.4%. These alloys are heat-treatable reinforced aluminum alloys, which have good strength, corrosion resistance, and workability, and are widely used in construction, automotive, and electronics.

7XXX Series Aluminum:

Indicates a series of aluminum-zinc alloys where the zinc content: 3% – 7.5%. An example is Aluminum Alloy 7075, an alloy with very high strength and corrosion resistance that is commonly used in aerospace and mountaineering gear.

Final Summary:

Aluminum grades are an important way of classifying and identifying aluminum and aluminum alloy products, and are named based on the alloy’s composition, performance characteristics and use.

 

By understanding aluminum grades, we can better choose the right aluminum to meet the needs of different projects and applications.

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