Marine Steel-Aluminum Composite Panel is an advanced composite material that combines the advantages of steel and aluminum, specifically designed for shipbuilding and marine engineering. By integrating high-strength steel with lightweight, corrosion-resistant aluminum alloy through metallurgical bonding technology, this product delivers the core benefits of both materials. It addresses modern demands for vessel weight reduction while significantly enhancing corrosion resistance, impact resistance, and service life, making it an ideal choice for contemporary shipbuilding.
Material Structure and Manufacturing Process
Layered Structure
Outer Layer (Aluminum Alloy): Made from marine-grade aluminum alloys such as 5083 and 6061, with a thickness ratio of 20%-30%, providing exceptional resistance to seawater corrosion.
Intermediate Bonding Layer: Achieved via hot-rolling or explosive welding to ensure seamless metallurgical bonding and high interlayer strength.
Inner Layer (Steel Plate): Utilizes high-strength marine steel (e.g., AH36, DH36), with a thickness ratio of 70%-80%, offering structural support and impact resistance.
Manufacturing Processes
Hot-Rolling Bonding: Atomic diffusion bonding at high temperature and pressure, suitable for mass production.
Explosive Welding: Instant metallurgical bonding through explosive impact force, ideal for irregularly shaped or ultra-thick plates.
Core Performance Advantages
Lightweight Design
30%-40% lower density compared to pure steel, significantly reducing hull weight to improve cargo capacity and fuel efficiency.
Ideal for high-speed ferries, yachts, and other vessels sensitive to weight.
Superior Corrosion Resistance
The aluminum outer layer isolates seawater and salt spray, with a salt spray test lifespan exceeding 20 years.
Eliminates electrochemical corrosion risks common in traditional steel hulls, extending service life to over 30 years.
High Strength and Safety
Tensile strength: 300-500 MPa (customizable for higher requirements), yield strength ≥235 MPa.
Excellent impact toughness, maintaining stable performance even at -60°C, compliant with Polar Code standards.
Cost Efficiency
Initial cost is 40%-50% lower than pure aluminum plates, with long-term maintenance costs reduced by over 60% compared to steel.
Fully recyclable, aligning with green shipbuilding trends.
Technical Specifications
| Parameter | Value |
|---|---|
| Density | 4.5-5.2 g/cm³ |
| Thermal Conductivity | 120-160 W/(m·K) |
| Operating Temperature | -60°C to 300°C |
| Standard Dimensions | Width ≤3000mm, Length ≤12000mm |
| Surface Treatment | Anodizing, Sandblasting, Fluorocarbon Coating |
Certifications and Standards
Certified by DNV-GL, CCS, ABS, and other major classification societies.
Compliant with IMO SOLAS and MARPOL regulations.
Market Outlook
With the global shipping industry transitioning toward lightweight and eco-friendly solutions, demand for marine steel-aluminum composite panels continues to grow. The market is projected to exceed $1.5 billion by 2025, particularly in luxury cruise ships, (new energy vessels), and deep-sea equipment.
Marine Steel-Aluminum Composite Panels redefine the boundaries of marine materials through their innovative "steel-core, aluminum-shell" design. By balancing lightweight performance, durability, and cost-effectiveness, they are driving the shipbuilding industry toward a more efficient and sustainable future. For customized solutions or technical support, contact Haomei today!
