In the shipbuilding sector, 5083 h116/h321/h112 is mostly utilized for the main deck, diesel engine pedestal, and hull of boats. Aluminum 5083 h111 and 5083 H112 are part of the same 5083 aluminum alloy. The two are nearly identical, with no chemical differences. The most common alloy for marine aluminum plate is 5083h111 marine aluminum plate.
The bending effect of 5083 aluminum plate varies depending on the temper. High hardness makes it simple to break while bending. The superhard condition of H18 is unsuitable for bending. Bendable tempers include O, H111, H112, H114, H24, H32, and H34.
The 5083-H111 and 5083-H112 aluminum alloys refer to products that undergo work-hardening processes, which enhance their strength. Here's an overview of the different H temper subdivisions:
H1: Simple work-hardening process, where strength is achieved solely through work hardening without additional heat treatment. This temper is suitable for applications where only work hardening is needed to meet the required strength.
H2: Work-hardening combined with incomplete annealing. This temper is used for products that have exceeded the desired work-hardening level, and the strength is reduced due to incomplete annealing. For alloys that naturally soften at room temperature, H2 has the same minimum tensile strength as H3, but with slightly higher elongation. For other alloys, H2 shares the same tensile strength as H1 but with slightly better elongation.
H3: Stable work-hardened state. After work hardening, the material is heat-treated or heated during processing to stabilize the mechanical properties. This temper is applicable only to alloys that soften gradually at room temperature unless stabilized.
H4: Work-hardened and coated. This temper refers to products that have not been fully annealed after work hardening.
The second digit following "H" indicates the degree of work hardening. For instance, the number 8 represents a hard state, while H111 indicates moderate work hardening post-annealing, and H112 refers to products that have undergone thermal processing.
5083-H111 Mechanical Properties:
Proof Strength: 145 MPa
Tensile Strength: 300 MPa
Elongation: 23%
Shear Strength: 175 MPa
Hardness: 75 HV
5083-H112 Mechanical Properties:
Tensile Strength (250°C): 275-350 MPa
Yield Strength (250°C): 210 MPa
Hardness: 65 (measured with a 500 kg load and 10 mm ball)
Elongation: 16%
This comparison helps in selecting the right temper based on the specific mechanical requirements for your application.
5083 aluminum plates are widely used in a variety of applications, including ships, vehicles, aircraft, pressure vessels, refrigeration devices, and construction. Known for their excellent corrosion resistance and weldability, 5083 H321 is a high-performance aluminum alloy commonly used in marine environments and other demanding industries.
Composition and Properties:
5083 H321 is part of the Al-Mg alloy series, with magnesium as the primary alloying element. It offers good medium strength, superior corrosion resistance, and excellent weldability, making it suitable for a range of industrial applications.
Key Features:
Corrosion Resistance: Particularly effective in marine environments, such as ship hulls, decks, and engine pedestals.
Strength: Medium strength, with a tensile strength range of 305-385 MPa and a yield strength of 215-295 MPa.
Weldability: It has excellent weldability, making it an ideal choice for applications that require strong, reliable welds.
Cold Workability: The alloy also maintains good cold workability, which is crucial in many manufacturing processes.

Applications:
Marine: Used in shipbuilding, particularly for decks, engine mounts, ship sides, and bottom outer panels.
Automotive and Aerospace: Ideal for automotive welding parts, subway light rails, and aircraft fuel tanks.
Other Industries: Also used in pressure vessels, refrigeration units, television towers, drilling equipment, and missile parts.
After anodizing, 5083 H321 aluminum sheets offer enhanced surface aesthetics and improved corrosion resistance, making it a preferred choice for high-performance environments. Its properties make it especially suitable for underwater and oceanic applications, where corrosion resistance is paramount.
In conclusion, 5083 H321 aluminum is highly versatile, offering durability and strength for marine and industrial applications alike, with a focus on corrosion resistance and weldability.
The specification of 5083 marine-grade aluminum plate sheet
| Alloy | 5083 |
| Temper | H116, H321 |
| Thickness | 3-50mm |
| Width | 1000-2650mm |
| Length | 2000-12000mm |
| Standard Sizes | 2000*6000mm; 2000*8000mm; 1500*3000mm; |
| Surface | Smooth, Bright, Polished, Blue PVC Film or Paper Interlayer |






