MC Aluminum produces high-quality 5083 marine-grade aluminum plates, available with certifications from CCS, DNV, BV, LR, ABS, and other classification societies. Common sizes include 2x6m, 2x8m, 1.5x6m, and 2.2x9m. Custom dimensions are also available. Our products are widely exported and trusted by major shipbuilders worldwide through long-term partnerships.

5083 aluminum plate H321 state: H321 is a stabilized treatment state, obtained by work hardening and incomplete annealing. It has both strength and toughness. It is suitable for application scenarios that require a certain strength and good formability. The surface can be brushed, coated, etc. to improve aesthetics and corrosion resistance.

5083 H321 is a highly versatile marine-grade aluminum alloy, widely used in shipbuilding, hull structures, docks, and other components exposed to seawater corrosion. In addition to maritime applications, it is also well-suited for industries such as pressure vessel manufacturing due to its excellent mechanical strength.

Advantages of 5083 H321 Marine Aluminum Plate

• Superior Marine Corrosion Resistance
  Far outperforms ordinary steel in seawater environments, significantly extending vessel lifespan and reducing maintenance costs.

• High Strength with Lightweight Design
  With a density of approx. 2.7g/cm³, 5083 aluminum greatly reduces ship weight compared to steel, improving speed and fuel efficiency.

• Excellent Weldability
  Compatible with multiple welding techniques including MIG, TIG, and resistance welding. Weld joints offer high strength and are resistant to cracking.

• Outstanding Workability
  Can be easily cut, stamped, bent, formed, and machined to accommodate complex ship structures and designs.

Thanks to these properties, 5083 H321 marine aluminum has become an ideal material in modern shipbuilding. In marine engineering, it not only improves vessel safety and durability but also contributes to energy saving and eco-friendly design.

Product Specifications

Dimensions and sizes vary based on specific application requirements. Thickness typically ranges from 3mm to 50mm, with standard sizes such as 2m x 6m or 2m x 8m. Custom sizes can be tailored to client needs.

Pricing Information

The price of 5083 H321 marine aluminum plates varies based on manufacturer, size, thickness, aluminum ingot price, and processing costs. While pricing is generally higher than conventional aluminum plates, its superior performance and wide application make it a preferred choice among shipbuilders.

If you want to get a product quotation, you can tell me 1. Alloy 2. Size 3. Temper 4. Estimated quantity by email

5083 marine aluminum plate is one of MC Aluminum’s flagship products, known for high strength, corrosion resistance, lightweight, and excellent machinability. Widely recognized in overseas markets, our products are produced with advanced technology and strict quality control — from alloy composition selection and optimized casting to homogenized heat treatment and rolling trials. Our 5083 plates are comparable in performance to international standards, meeting diverse processing needs with broad application potential.