7000 Series Aluminum alloy

7000 series aluminum mainly contains zinc element, which has the highest strength in aluminum alloy and is also an aviation aluminum alloy like the 2000 series aluminum.
7000 series aluminum is a high-strength and high-hardness type of aluminum alloy that is widely used in the aviation, automobile, railway, shipbuilding, and other industries due to its excellent mechanical properties and resistance to corrosion. Its ultra-hardness makes it ideal for manufacturing high-demand, high-strength, and lightweight products.
However, the cost of 7000 series aluminum is higher and its weldability is poor, so it requires careful consideration in its application. The main alloys in this series include 7075, 7050, 7049, 7022, and 7003.
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Main Alloy Chemistry Typical

7005 Aluminum Alloy

Element

Si

Fe

Cu

Mn

Mg

Zn

Cr

Ti

Zr

Others 

Al

Maximum Content

0.35

0.40

0.10

0.2 - 0.7

1.0 - 1.8

4.0 - 5.0

0.06 - 0.20

0.01 - 0.06

0.08 - 0.20

0.15

Remainder

7020 Aluminum Alloy

Element

Si

Fe

Cu

Mn

Mg

Zn

Cr

Ti

Zr

Others 

Al

Maximum Content

0.35

0.40

0.10

0.2 - 0.7

1.0 - 1.8

4.0 - 5.0

0.06 - 0.20

0.01 - 0.06

0.08 - 0.20

0.15

Remainder

7050 Aluminum Alloy

Element

Si

Fe

Cu

Mn

Mg

Zn

Ti

Cr

Others(each)

Others(total)

Al

Maximum Content

0.12

0.15

2.0 - 2.6

0.10

1.9 - 2.6

5.7 - 6.7

0.06

0.04 - 0.15

0.05

0.15

balance

7055 Aluminum Alloy

Element

Si

Fe

Cu

Mn

Mg

Zn

Cr

Ti

Zr

Others 

Al

Maximum Content

0.10

0.15

2 - 2.6

0.050

1.8 - 2.3

7.6 - 8.4

0.040

0.060

0.080 - 0.25

0.15

Remainder

7068 Aluminum Alloy

Element

Si

Fe

Cu

Mn

Mg

Zn

Cr

Ti

Zr

Others 

Al

Maximum Content

0.12

0.15

2.4

0.10

3.0

8.3

0.05

0.10

0.15

0.15

Remainder

7072 Aluminum Alloy

Element

Si + Fe

Cu

Mn

Mg

Zn

Others 

Al

Maximum Content

0.70

0.10

0.10

0.10

0.80 - 1.3

0.15

Remainder

7075 Aluminum Alloy

Element

Si

Fe

Cu

Mn

Mg

Zn

Ti

Cr

Others(each)

Others(total)

Al

Maximum Content

0.40

0.50

1.2 - 2.0

0.30

2.1 - 2.9

5.1 - 6.1

0.18 - 0.28

0.04 - 0.35

0.05

0.15

reminder

7049 Aluminum Alloy

Element

Si

Fe

Cu

Mn

Mg

Zn

Ti

Cr

Others(each)

Others(total)

Al

Maximum Content

0.12

0.15

1.9 - 2.5

0.10

1.9 - 2.5

5.8 - 6.8

0.04 - 0.10

0.04 - 0.15

0.05

0.15

reminder

7022 Aluminum Alloy

Element

Si

Fe

Cu

Mn

Mg

Zn

Ti

Cr

Al

Maximum Content

0.10

0.30

1.2 - 2.0

0.50

1.9 - 2.6

6.5 - 7.5

0.10

0.18 - 0.28

reminder

7003 Aluminum Alloy​

Element

Si

Fe

Cu

Mn

Mg

Zn

Ti

Cr

Al

Maximum Content

0.35

0.50

0.10

0.50

1.20 - 1.80

5.00 - 6.00

0.10

0.15 - 0.35

reminder

The above alloy element ratio is based on the national standard. If you have special chemical composition requirements for 7000 series aluminum alloys, please contact our product specialist.

Physical Properties

Alloy

Tensile Strength (MPa)

Yield Strength (MPa)

Elongation (%)

Hardness (HB)

Density (g/cm3)

Thermal Conductivity (W/m·K)

Coefficient of Thermal Expansion (10^-6/K)

7075

572 - 595

503 - 524

11 - 13

150 - 160

2.81

130 - 160

23.2 - 23.9

7050

572 - 590

503 - 524

10 - 13

140 - 160

2.82

130 - 160

23.4

7049

572 - 586

503 - 524

9 - 11

140 - 160

2.83

130 - 160

23.3

7022

427 - 483

269 - 310

15 - 18

110 - 130

2.82

100 - 140

23.3

7003

410 - 480

280 - 370

10 - 16

110 - 140

2.80

120 - 140

23.5

Product Types

The 7000 series aluminum is known for its strong processing performance and can be produced using casting, extrusion, and rolling processes. This results in the production of aluminum rods, tubes, plates, and welding wires that meet high-strength and high-hardness applications.

Aluminum Rods & Bars

7000 series aluminum rods are a high-strength material that is typically used to manufacture structural components that need to withstand high loads and vibrations, such as aircraft components, engines, and propellers.

Aluminum Extrusion

7000 series aluminum profiles are a high-strength, corrosion-resistant, and easy-to-process material. They can be extruded into various shapes to meet the requirements of the aerospace, sports equipment, and automotive manufacturing industries.

Aluminum Tubes

7000 series aluminum tubes are usually used to manufacture structural components that require high strength and light weight, such as aircraft main landing gear, flight control systems, and braking systems. Additionally, they are widely used in the military, aerospace, and sports equipment fields.

Aluminum Plates

7000 series aluminum plates are high-strength, corrosion-resistant, lightweight, and easy-to-form materials. They can be manufactured into sheets and coils of varying thicknesses and widths to meet product requirements.
For example, they are used in the construction of aircraft shells, car bodies, ship hulls, and sports equipment. Furthermore, 7000 series alloys are extensively utilized in the production of high-tech products, such as high-pressure gas cylinders, missiles, and satellites.

Applications

Originally, the 7000 series alloy was specifically designed for aerospace applications. However, with the continuous development of industry, more and more industries have begun to incorporate 7000 series alloys into their products to pursue higher quality.

Aerospace

7000 series aluminum alloys have excellent strength and corrosion resistance, and are widely used in the aerospace industry. Common applications include aircraft structural components, aircraft shells, hydraulic systems, engine components, missile components, and more.

Automotive

7000 series aluminum alloys are also widely used in automotive production to reduce weight and improve fuel economy. Common applications include body structural components, wheels, frames, engine hoods, transmission systems, and more.

Marine

The excellent corrosion resistance and strength of 7xxx series aluminum also make them an ideal material for shipbuilding. Common applications include ship hulls, bottoms, decks, bridges, and more.

Electronics

7000 series aluminium alloys also have applications in the electronics field, especially in the manufacture of high-speed circuits, electronic devices, and electronic packaging, where they can improve heat dissipation efficiency and reduce weight.

Sports

7000 series aluminium alloys are also widely used in the manufacture of high-performance sports equipment such as bicycles, golf clubs, arrow shafts, fishing rods, climbing equipment, and more.

7000 Series Aluminum Industry Supply At HDM

7075 Aluminum Sheet

At HDM, we cut and pre-stretch aluminium thick plates to manufacture high-demand aerospace components, such as fuselage structures, engine components, and missile parts.

7050 Aluminum Plate

HDM is capable of supplying 7050 aluminium sheets that are used to manufacture parts that need to withstand high pressure and high loads in industries such as aerospace, ships, and automobiles. Examples include aircraft structures, wings, and pilot seats.

7049 Aluminum

This type of aluminum is mainly used to manufacture parts that need to withstand high loads and high temperatures in the aerospace field. It is an important material in aerospace, national defense, and other industries.
For other 7000 series product types, such as aluminum bars and tubes,please contact our product specialist.
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