Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of 5083 marine grade aluminum in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
5083 marine grade aluminum (also known as AA5083 aluminum plate, AlMg4.5Mn aluminum sheet) is a high-magnesium aluminum alloy renowned for its exceptional corrosion resistance in seawater environments, high strength, and excellent weldability. It is widely used in shipbuilding, offshore structures, LNG tanks, pressure vessels, and heavy-duty marine applications where durability and reliability are critical.
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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
Chemical Composition (Typical, %)
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Magnesium (Mg) | 4.0 – 4.9 |
| Manganese (Mn) | 0.4 – 1.0 |
| Chromium (Cr) | 0.05 – 0.25 |
| Iron (Fe) | ≤ 0.40 |
| Silicon (Si) | ≤ 0.40 |
| Copper (Cu) | ≤ 0.10 |
| Zinc (Zn) | ≤ 0.25 |
Mechanical Properties (Typical)
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| O | ≥ 275 | ≥ 125 | ≥ 22 |
| H111 | ≥ 305 | ≥ 145 | ≥ 20 |
| H116 / H321 | ≥ 305 | ≥ 215 | ≥ 12 |
Key Advantages of 5083 Marine Grade Aluminum
Outstanding seawater corrosion resistance, ideal for marine and offshore use
High strength without heat treatment, maintaining stability in harsh environments
Excellent weldability, no significant loss of strength in welded joints
Superior low-temperature performance, suitable for cryogenic and LNG applications
Long service life, reducing maintenance and lifecycle costs
Applications
Shipbuilding & Boat Hulls – decks, hull plates, bulkheads
Offshore Platforms – structural panels and support components
LNG Storage & Transport Tanks – cryogenic performance stability
Pressure Vessels – industrial and marine-grade containers
Heavy-Duty Marine Structures – docks, bridges, and coastal facilities
Inspection & Quality Assurance
Full Mill Test Certificate (EN 10204 3.1) supplied with each batch
Chemical composition and mechanical property testing
Dimensional tolerance and surface inspection
Optional third-party inspection (SGS / BV / TUV)
Complete heat number and batch traceability
Packaging & Delivery Standards
PVC film or interleaving paper to protect surfaces
Export-grade wooden pallets or crates
Edge and corner protection for thick plates
Moisture-proof and seaworthy packing for ocean transport
Suitable for bulk orders, project cargo, and global export
Contact Us
Looking for 5083 marine grade aluminum plates or sheets with certified quality and global delivery?
Contact us today for technical consultation, pricing, and customized solutions for shipbuilding and offshore projects.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
Q1: What makes 5083 aluminum a true marine-grade alloy?
5083 aluminum contains high magnesium content, providing exceptional resistance to seawater and salt spray corrosion, making it ideal for long-term marine and offshore exposure.
Q2: Is 5083 aluminum suitable for ship hulls and offshore structures?
Yes. 5083 is widely used for ship hulls, decks, bulkheads, and offshore platforms due to its high strength, weldability, and corrosion resistance.
Q3: What tempers are recommended for marine applications?
The most commonly used tempers are H116 and H321, which are specially developed to ensure enhanced resistance to exfoliation and stress corrosion in marine environments.
Q4: Can 5083 aluminum be welded without losing strength?
Yes. 5083 offers excellent weldability, and welded joints retain most of the alloy's mechanical strength, making it suitable for large fabricated structures.
Q5: Is 5083 aluminum heat treatable?
No. 5083 is a non-heat-treatable aluminum alloy. Its strength is achieved through strain hardening and alloy composition, not heat treatment.
Q6: How does 5083 compare to 5052 aluminum in marine use?
5083 provides significantly higher strength and better performance in harsh marine conditions, while 5052 is generally used for light marine or non-structural applications.
Q7: Is 5083 aluminum suitable for low-temperature or cryogenic applications?
Yes. 5083 maintains excellent toughness and strength at low temperatures, making it suitable for LNG tanks and cryogenic vessels.
Q8: What thickness and sizes are available?
Typical thickness ranges from 1.0 mm to 120 mm, with custom cutting, width, and length available based on project requirements.
Q9: What standards does 5083 aluminum comply with?
5083 aluminum plates and sheets can be supplied in accordance with ASTM B209, EN 485, and ISO 6361, with full certification.
Q10: Are inspection documents provided for export orders?
Yes. Each shipment can be supplied with Mill Test Certificates (EN 10204 3.1), chemical and mechanical reports, and third-party inspection upon request.
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