Marine Al 5052 5083 Sheet for Boat
In the shipbuilding industry, aluminum alloys are gradually replacing traditional steel as a key material due to their lightweight and corrosion-resistant properties. 5052 and 5083 aluminum alloys, with their suitability for marine environments, have become the mainstays of marine aluminum sheets.
5052 aluminum alloy
5052 aluminum alloy belongs to the Al-Mg alloy family, with a magnesium content of approximately 2.2%-2.8%. It is a commonly used material for non-load-bearing marine structures. 5052-h32 is one of its common tempers. Al 5052 h32 material properties can be assessed from three perspectives:
1. Mechanical Properties
The H32 state refers to a material that has undergone a "work hardening + stabilization" treatment. This not only retains the strength gained from work hardening, but also eliminates internal stresses through stabilization, preventing subsequent deformation. Its key mechanical properties are as follows:
Tensile strength: ≥230 MPa, capable of withstanding the vibration loads of a ship during navigation;
Yield strength: ≥190 MPa, resistant to plastic deformation under wind and wave impact;
Elongation: ≥10%, exhibiting excellent bending and stamping properties, suitable for processing into complex shapes such as cabin linings and deck covering base plates.
2. Corrosion Resistance
5052 aluminum sheet has a moderate magnesium content, resulting in a dense oxide film. The stabilization treatment in the H32 state further enhances its resistance to intergranular corrosion. In marine applications, it is resistant to surface rust even under prolonged exposure to seawater and salt spray, making it particularly suitable for:
Inner panels for ship superstructures (such as wheelhouse sidewalls and cabin bulkheads);
Inner linings for fresh water and ballast tanks;
Auxiliary components such as pipe covers and equipment brackets.
3. Lightweight Advantages
5052 aluminum alloy has a density of only 2.68g/cm³, making it approximately three-fifths lighter than steel. For example, using 5052 H32 aluminum sheet instead of traditional steel for interior cabin components on a 5,000-ton ship could reduce the ship's deadweight by approximately 8%-10%, indirectly reducing fuel consumption during navigation and aligning with the shipbuilding industry's trend toward lightweight and energy conservation.
5083 aluminum sheet
5083 aluminum alloy also belongs to the Al-Mg family, but has a higher magnesium content (4.0%-4.9%) and a small amount of manganese added. Its strength is over 30% higher than 5052, making it a core material for load-bearing marine structures. In marine applications, H112, H321, and O are the three most popular tempers, each with its own specific applications:
1. H112 temper
H112 is a naturally aged state after hot or cold rolling. It requires no additional heat treatment and exhibits low internal stress and high dimensional stability, making it suitable for large structural components such as hull side plating, bottom plating, deck main beams, and ribs.
This grade offers advantages in terms of high mass production efficiency and uniform mechanical properties, with a tensile strength of ≥270 MPa and a yield strength of ≥110 MPa, meeting the overall load-bearing requirements of a ship.
2. H321 temper
H321 is a "work-hardened + partially stabilized" state. It has higher strength than H112 (tensile strength ≥310 MPa, yield strength ≥250 MPa) while retaining excellent seawater corrosion resistance. It is particularly suitable for ship bow and stern anti-collision structures, seawater cooling system piping, valve housings, and other applications.
3. O temper
The O state is the soft state after complete annealing, with excellent plasticity (elongation ≥ 20%). It can be made into complex shapes through stamping, bending, and welding. It is suitable for small precision components such as ship hatch covers, ventilation ducts, porthole frames, door handles, etc. Welcome to inquire the aluminium 5083 data sheet from us directly.
