Aluminium 5083 H321

2024-11-06

Aluminium 5083 H321 alloy is a kind of aluminum alloy material with excellent characteristics, and its characteristics can be elaborated from the following aspects:

1. Chemical composition and alloying elements
5083 H321 aluminum alloy belongs to Al-Mg-Si alloy, in which the main alloying element is magnesium, the content of which is between 4.4% and 4.9%. In addition, it also contains a small amount of silicon, iron, copper, manganese, chromium, zinc, titanium and other elements, as well as the remaining amount of aluminum. The combination of these alloying elements gives 5083 H321 aluminum alloy its unique properties.

2. Physical and Mechanical Properties
- Strength: 5083 H321 aluminum alloy has moderate strength with a yield strength of approximately 210 MPa and a tensile strength between 275 and 350 MPa. This strength characteristic allows it to meet the needs of a wide range of engineering applications.
- Hardness: It has moderate hardness and good machinability.
- Elongation: The alloy has a high elongation of about 16%, showing good plasticity and toughness.
- Coefficient of Thermal Expansion: 5083 H321 aluminum alloy has a coefficient of thermal expansion of 23.4 μm/m-K, providing good stability during temperature changes.
- Melting point range: Its melting point ranges from 570 to 640°C.
- Conductivity: the conductivity at 20 ℃ is 29% ACS, showing good electrical conductivity.

3. Corrosion resistance and weldability
- Corrosion resistance: 5083 H321 aluminum sheet has excellent corrosion resistance, especially in harsh environments such as seawater. Its good corrosion resistance makes it the material of choice for marine use, offshore engineering and areas requiring high corrosion resistance.
- Weldability: The alloy is easy to weld and has a high welding strength, which makes it adaptable to various welding methods. This makes it widely used in shipbuilding, automobile manufacturing and other fields.

4. Formability and processability
- Formability: 5083 H321 aluminum alloy has good forming and processing performance, easy to cut, stamping, cold bending, forming and cutting and other forms of processing. This makes it able to meet the needs of complex shapes and structural parts.
- Machinability: In addition to good formability, the alloy has good cutting performance and is suitable for machining.

5. Fields of application
Because 5083 H321 aluminum alloy has the above excellent characteristics, it is widely used in many fields:
- Shipbuilding: used to manufacture hulls, cabins, decks and other parts, which can be used stably for a long time in the seawater environment.
- Automotive manufacturing: used to manufacture car bodies, frames and other components to achieve lightweight and improve fuel efficiency.
- Aerospace: Used in the manufacture of aircraft fuselage, wing beams and other important components to improve flight performance and load capacity.
- Other fields: It is also widely used in subway light rail, pressure vessels, refrigeration units, TV towers, drilling equipment and hardware products.

In summary, 5083 H321 aluminium alloy plays an important role in many fields with its excellent corrosion resistance, weldability, formability and processability.

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