The material grade of aluminum alloy is divided into different series according to its chemical composition, mechanical properties and uses. Each series has its own unique performance 

characteristics, suitable for different application areas. The common grade system of aluminum alloy is based on the Chinese GB standard, the American Aluminum Association (AA) 

standard and the European EN standard.

1. Grade classification of aluminum alloy

The grade of aluminum alloy is generally divided into four main series, classified according to the main composition of alloy elements:

1.1 1000 Series (pure aluminum series)

Main elements: more than 99% aluminum, the main impurity is iron.

Representative brand: 1050, 1060, 1100, etc.

Features:

Excellent corrosion resistance, electrical conductivity and thermal conductivity.

Good workability and low strength.

Application field:

Electrical and electronic industries: cables, conductors, electronic components, etc.

Food and chemical industries: fuel tanks, chemical containers, etc.

Because of its good corrosion resistance, it is also commonly used in the production of aluminum plates, aluminum strips, aluminum foil and so on.

1.2 2000 series (aluminum copper alloy series)

Main element: Copper.

Representative brand: 2011, 2024, etc.

Features:

It has high strength and good fatigue resistance.

Poor weldability, poor corrosion resistance.

Application field:

Aerospace: aircraft structural parts, aviation parts, etc.

Transportation industry: high-strength structural parts, aircraft wheels, etc.

1.3 3000 series (aluminum-manganese alloy series)

Main element: Manganese.

Representative brand: 3003, 3105, 3004, etc.

Features:

It has good formability and corrosion resistance.

Medium strength, better corrosion resistance than the 1000 series.

Application field:

Home appliance industry: air conditioner shell, refrigerator shell, aluminum foil, etc.

Construction industry: roof, wall materials, aluminum alloy window frames, etc.

Manufacturing: fuel tank, storage tank, etc.

1.4 4000 Series (aluminum silicon alloy series)

Main element: Silicon.

Representative brand: 4032, 4045, 4045, etc.

Features:

Good castability and low coefficient of expansion.

Excellent weldability and low temperature expansion.

Application field:

Automotive industry: Engine parts, car parts, wheels.

Aerospace: Engine components.

1.5 5000 Series (Aluminum magnesium alloy series)

Main element: Magnesium.

Representative brand: 5052, 5083, 5086, etc.

Features:

Excellent resistance to corrosion and seawater.

High strength, good weldability, strong fatigue resistance.

Application field:

Shipbuilding industry: hull, ship parts, Marine facilities.

Sewage treatment, Marine equipment and other industries with high corrosion resistance requirements.

Vehicles, tankers, trucks, etc.

1.6 6000 Series (Al-MG-Si alloy series)

Main elements: Magnesium and silicon.

Representative brand: 6061, 6063, 6082, etc.

Features:

It has good strength, corrosion resistance and good processing performance.

Good weldability, suitable for heat treatment strengthening.

Application field:

Construction: Doors and Windows, curtain walls, aluminum profiles.

Machinery manufacturing: vehicles (automobiles, railway vehicles), equipment frames.

Aerospace: aerospace parts, military products.

1.7 7000 Series (Aluminum zinc alloy series)

Main element: Zinc.

Representative brand: 7075, 7050, etc.

Features:

It has the highest strength and is often used in applications requiring high strength and good corrosion resistance.

Poor weldability, but very high corrosion resistance and strength.

Application field:

Aerospace: Structural components of aircraft and aircraft.

High-intensity sports equipment: bicycle frames, ski equipment.

High demand structural parts: military, industrial heavy machinery.

1.8 8000 Series (Hybrid series)

Main elements: Other elements.

Representative brand: 8006, 8090, etc.

Features:

For alloys with special requirements, properties adjusted according to other alloying elements.

Application field:

Generally used in the production of aluminum foil, aluminum foil packaging materials, beverage cans, etc.

2. Summary of the main application areas of each series

Series of main application areas

1000 series electric power, electrical industry, food chemical industry, light industry, building decoration

2000 series aerospace, military aircraft, high strength mechanical parts

3000 series home appliance industry, construction industry, transportation, oil and gas storage

4000 series automotive industry, engine, auto parts

5000 series ships, Marine equipment, oil tanks, cars, trucks

6000 Series Construction industry, mechanical equipment, aerospace, transportation

7000 Series aerospace, military applications, high intensity sports equipment

8000 series packaging industry (aluminum foil, beverage cans, containers)

3. Material selection suggestions

Industries with high corrosion resistance requirements: 5000 series, 3000 series and 6000 series are preferred, especially 5000 series (aluminum-magnesium alloy) has excellent 

corrosion resistance.

Structural components with high strength requirements: 2000 series, 7000 series is the best choice, especially 7000 series (aluminum zinc alloy) has super strength.

Good processing requirements of materials: 1000 series and 6000 series, with good processing performance, suitable for a large number of cold processing occasions.

The wide application of these aluminum alloy grades reflects the diversity of aluminum alloys and their importance in modern industry.