MC Aluminum, as an experienced marine aluminum supplier, manufactures 5-series marine aluminum plates and 6-series marine aluminum plates fully compliant with ASTM, CCS, LR, ABS and other certifications, ensuring reliability and acceptance in global engineering and procurement projects. All products meet classification society standards for shipbuilding, offshore, and pressure vessel applications.

What is Hot-Rolled Aluminum Plate?

Hot-rolled aluminum plate is produced from aluminum ingots, which are heated at high temperatures and repeatedly rolled through a hot rolling mill. This process improves the internal structure of the aluminum, enhancing its plasticity and processing performance.

Hot rolling ensures that marine aluminum plates are free from internal defects and have a uniform structure-crucial for resisting seawater corrosion and external loads.

The uniform structure and even distribution of alloying elements (such as magnesium) in hot-rolled plates provide the ideal microstructural foundation for forming a stable protective oxide film in seawater.

Common Hot-Rolled Marine Alloys

Hot-rolled aluminum plates are well-suited for marine environments mainly because 5-series (e.g., 5083, 5086, 5052) and 6-series (e.g., 6061) alloys can form a strong passivation oxide film, delivering excellent corrosion resistance.

• 5-Series Alloys (e.g., 5052, 5083): Containing 2%-5% magnesium, these alloys provide outstanding seawater corrosion resistance and fatigue strength, making them core materials for shipbuilding and offshore platforms.

• 6-Series Alloys (e.g., 6061, 6082): Containing magnesium and silicon, these alloys achieve high strength through heat treatment while offering excellent resistance to marine atmospheric corrosion. They are widely used in marine wind power structures, such as flanges and connectors, where they withstand vibration loads and resist salt spray corrosion.

Marine Hot-Rolled Aluminum Plate Specifications

Why Choose Hot-Rolled Aluminum Plate for Marine Challenges?

1. Superior Corrosion Resistance vs. Steel: Reduces protective coating needs and lowers maintenance costs.

2. Lightweight Design: Cuts fuel consumption and improves ship economy.

3. Longer Service Life: Excellent corrosion resistance extends the lifespan of vessels and equipment.

4. Eco-Friendly & Recyclable: Aluminum is 100% recyclable, supporting green manufacturing trends.

5. Cost-Effective: Hot rolling is one of the most efficient and economical methods for producing thick plates.

6. International Certification: Hot-rolled aluminum plates such as 5083 and 5754 are approved by leading classification societies (ABS, DNV, CCS), ensuring reliability.

Applications of Marine Aluminum Plate

Marine aluminum sheet is primarily used in ship superstructures, decks, bulkheads, and other areas. Aluminum sheet reduces weight and lowers operating costs in yachts, fishing vessels, and cargo ships. Aluminum sheet is also used in ship interiors, such as furniture and partitions, and is favored for its ease of fabrication and aesthetics.

Comparison with Other Materials

vs. Steel: Aluminum's density is about one-third that of steel, giving it a huge weight advantage. This reduces fuel consumption, increases sailing speed, or expands cargo capacity. Its corrosion resistance far exceeds steel, eliminating the need for costly anti-corrosion coatings and lowering lifecycle costs.

vs. Conventional Cold-Rolled Aluminum Plate: Cold-rolled plates are generally thinner and may not meet the strength and toughness requirements of large marine structures. Hot-rolled thick plates offer unmatched load-bearing capacity and impact resistance, making them indispensable in marine engineering.