AA 5083, a high magnesium alloy with small amounts of manganese and chromium, is known for its outstanding performance in extreme environments. It offers superior resistance to both seawater and industrial chemical exposure. One of its key advantages is that it retains exceptional strength even after welding. As the highest-strength alloy within the non-heat-treatable group, AA 5083 is ideal for many applications, though it is not recommended for use in temperatures above 65°C.
Chemical composition of 5083 Marine Aluminum Sheet
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Zr | Unit |
| 5083 | ≦0.4 | ≦0.4 | ≦0.1 | 0.40-1.00 | 4.00-4.90 | 0.05-0.25 | ≦0.25 | ≦0.15 | – | Wt% |
5083 Aluminum Plate Mechanical properties
| Alloy | Temper | Rm (MPa)
Tensile strength |
Rp0.2 (MPa)
Yield strength |
Elongation
A(%) |
Exfoliation
corrosion |
Intergranular corrosion
Mg/cm² |
Certification |
| 5083 | O/H111/H112 | ≥275 | ≥125 | ≥16 | – | – | DNV, GL, ABS, CCS, BV, LR |
| H116 | ≥305 | ≥215 | ≥10 | ≦PB | ≦15 | ||
| H321 | 305-385 | 215-295 | ≥12 |
Applications of Aluminium Alloy 5083:
Due to its strength and corrosion resistance, AA 5083 is extensively used in the shipbuilding industry. Additionally, it is highly suitable for the following industries:
Marine applications
Pressure vessels
Drilling rigs
Transportation equipment
TV/communication towers
Technical Datasheet of Aluminium Alloy 5083:
For detailed specifications, customers can view the technical datasheet to ensure this alloy meets their specific needs.
Sizes of Aluminium Alloy 5083:
GNEE provides AA 5083 sheets sourced from European and South African mills, all of which come with ink stencil marks indicating mill name, alloy temper, and other details. Mill test certificates are provided with each delivery to ensure traceability.
GNEE's 5083 aluminum plates are widely utilized for marine applications, with the most common temper being H116. In certain situations, customers may opt for H321. Here's a breakdown of the differences between the two:
H116: This aluminum alloy contains a magnesium content of at least 3.0% and undergoes an anti-corrosion treatment, making it highly resistant to corrosion, especially in marine environments. It offers excellent mechanical properties and anti-flaking corrosion resistance.
H321: This temper stabilizes the aluminum alloy after hardening, offering higher hardness, better stability, and superior corrosion resistance, particularly after painting. While H116 is commonly used, H321 provides enhanced performance in terms of stability and strength.
Both aluminum plates are suitable for marine environments, but the choice between H116 and H321 depends on specific needs such as hardness, stability, and long-term performance under extreme conditions.
When welding 5083 aluminum plates using fiber lasers, higher power (5 kW to 6 kW) and a speed range of 6 m/min to 9 m/min can achieve optimal welds, especially for deeper penetration.
For customers considering 5083 aluminum plates for their marine projects, GNEE offers a reliable source with tailored options based on your requirements. Feel free to reach out if you need further details.
GNEE's 5083 H116 aluminum is a high-strength, marine-grade alloy known for its superior weldability and exceptional corrosion resistance, particularly against seawater. It has an ultimate tensile strength of approximately 317 MPa (46,000 psi) and a Brinell hardness of 85. The H116 temper is specifically designed to resist exfoliation and intergranular corrosion, making it ideal for demanding marine environments.
Physical Properties:
Density: 2.66 g/cc (0.0961 lb/in³)
Electrical Resistivity: 5.9 × 10⁻⁶ ohm-cm
Thermal Conductivity: 117 W/m-K
Specific Heat Capacity: 0.9 J/g°C
Melting Point: 591–638°C (1095–1180°F)
Corrosion Resistance & Weldability:
Corrosion Resistance: Excellent resistance to general corrosion and seawater, enhanced by the H116 temper's ability to resist exfoliation and intergranular corrosion.
Weldability: Exceptional weldability, with both arc and resistance welding methods providing strong joints that maintain high performance, making it particularly suitable for shipbuilding applications.
Applications:
The outstanding properties of 5083 H116 aluminum make it ideal for marine applications, including high-speed ships, yachts, offshore structures, and components such as ship hulls, side plates, and bottom plating.
For reliable, high-quality aluminum sheets for your marine projects, GNEE offers tailored solutions to meet your specific requirements.