In the field of shipbuilding and marine engineering, material selection directly affects a vessel's performance, lifespan, and safety. The 5052-H112 marine aluminum alloy plate has become a "star material" for yachts, speedboats, fishing vessels, and superstructures due to its unique chemical composition and heat treatment condition.
5052 H112 Marine Aluminum Alloy
The 5052 H112 aluminum plate belongs to the 5xxx series marine aluminum alloys, with magnesium (Mg) as the main alloying element. It is one of the most widely used anti-rust aluminum alloys.
The H112 temper represents a non-fully annealed condition that provides excellent plasticity, allowing for cold bending, deep drawing, and forming, which makes it ideal for the complex curves and shapes of ship hulls.
5052 H112 Marine Aluminum Plate Specifications
| Temper | H112 |
| Thickness | 3 mm - 50 mm |
| Width | 1000 mm – 2500 mm |
| Length | Up to 12 meters (customizable) |
| Surface | Mill finish, polished, anodized, or coated |
| Packaging | Standard export seaworthy packaging |
| MOQ | 1-3 tons |
Mechanical Properties
| Tensile Strength | 215 - 265 MPa |
| Yield Strength | ≥125 MPa |
| Elongation | 12 - 20% |
| Hardness (HB) | 60 - 80 |
| Fatigue Strength | Excellent |
Physical Properties
| Density | 2.68 g/cm³ |
| Thermal Conductivity | 138 - 150 W/m·K |
| Electrical Conductivity | 35 - 38% IACS |
| Melting Temperature | 600 - 650°C |
| Thermal Expansion Coefficient | 23 × 10⁻⁶ /°C |
5052 Marine Aluminum Alloy Chemical Composition (%)
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Other:Each | Other:Total | Al |
| 5052 | 0.25 | 0.4 | 0.1 | 0.1 | 2.2-2.8 | 0.15-0.35 | 0.1 | - | 0.05 | 0.15 | remainder |
Advantages of 5052 H112 Marine-Grade Aluminum Plate
1. Superior Corrosion Resistance
Thanks to its high magnesium content, 5052 marine aluminum plate offers excellent anti-corrosion and anti-rust performance, capable of withstanding long-term exposure to seawater and freshwater. This outstanding resistance makes it ideal for hull construction and marine environments.
2. Excellent Weldability
5052 aluminum has exceptional welding properties with low cracking tendency. The presence of chromium improves resistance to stress corrosion cracking, increases the strength of the base metal and welds, and reduces weld deformation.
3. Outstanding Formability
With its superior formability, 5052 aluminum can be bent, rolled, welded, punched, or cut easily, allowing ship designers to achieve more complex and streamlined hull shapes.
4. Surface Treatment Versatility
5052 H112 aluminum plates can be treated with polishing, brushing, or anodizing to enhance both aesthetic appearance and corrosion resistance, making them suitable for visible and structural marine components.
Applications in Shipbuilding
Hull Structures
5052 aluminum is a professional marine-grade plate, widely used for yacht and small boat hulls. Its combination of strength, corrosion resistance, and lightweight properties enables it to withstand the demanding marine environment.
Marine Sheet Metal Components
Commonly used for boat body panels, decks, and control panels, offering stability and longevity in marine service.
Other Marine Parts
Also applied in fuel tanks, pipelines, liquid containers, and deep-drawn small structural components due to its corrosion resistance and formability.
Surface Quality Requirements for Marine Aluminum Plates
Marine-grade aluminum plates require strict surface quality control to ensure safety and reliability:
No cracks, corrosion spots, or nitrate traces
No peeling, bubbles, rough patches, or mechanical damage on the surface
Comparison with Other Marine Aluminum Alloys
In marine applications, different aluminum alloys serve different structural purposes:
5083 H116 Aluminum Plate
Offers higher strength and equally excellent corrosion resistance. Commonly used in large ship hulls and heavy-duty components requiring higher mechanical stress tolerance.
5086 H112 Aluminum Plate
Provides both high strength and outstanding corrosion resistance, making it suitable for offshore platforms and marine-grade high-strength plates.
6061 T6 Aluminum Plate
Delivers the highest strength among these alloys but slightly lower corrosion resistance, mainly used for ship frameworks and marine equipment parts.
In comparison, 5052 H112 strikes a balance between corrosion resistance, workability, and cost efficiency, making it an excellent choice for hulls, decks, storage tanks, and lightweight marine structures. It offers a cost-effective and durable solution for small to medium-sized vessels while reducing long-term maintenance costs.
Original Source: https://www.marinealum.com/a/5052-h112-marine-aluminum-alloy-plate.html
Tag: 5052 marine aluminum plate 5 series marine aluminum alloy 5052 H112 aluminum plate 5052 anti-rust aluminum plate 5052 marine-grade aluminum plate ship aluminum plate marine aluminum alloy plate marine aluminum supplier
