Marine aluminium sheet 5052
Marine environments demand materials that combine exceptional corrosion resistance, strength, and formability. The Marine Aluminium Sheet 5052 is one such alloy designed to withstand the harsh conditions of saltwater and marine atmospheres. It is widely used in maritime industries due to its outstanding durability, making it an ideal choice for various marine structural applications.
5052 aluminium is an alloy primarily composed of aluminium and magnesium, offering excellent marine-grade corrosion resistance. It belongs to the non-heat-treatable grade alloys, strengthened through work-hardening. Thanks to its versatile properties, 5052 sheets are extensively used in shipbuilding, boat construction, and offshore platforms.
Features of Marine Aluminium Sheet 5052
- Outstanding Corrosion Resistance: Resists oxidation and pitting attacks caused by saltwater and marine sprays.
- Good Weldability: Suitable for various welding processes including TIG, MIG, and arc welding.
- High Strength: Possesses adequate tensile and yield strength for medium-duty structural marine applications.
- Excellent Formability: Easily fabricated into complex shapes, aiding the construction of hulls, decks, and fittings.
- Lightweight: Reduces ship weight that improves fuel efficiency while maintaining structural integrity.
- Low Maintenance: Requires minimal upkeep in marine environments compared to ferrous metals.
Chemical Composition
The chemical makeup of 5052 marine aluminium ensures its resistance to marine corrosion and mechanical robustness:
| Element | Composition (%) |
|---|---|
| Aluminium (Al) | Balance (approx. 97.25 - 98.4) |
| Magnesium (Mg) | 2.2 – 2.8 |
| Chromium (Cr) | 0.15 – 0.35 |
| Iron (Fe) | ≤ 0.4 |
| Copper (Cu) | ≤ 0.1 |
| Manganese (Mn) | ≤ 0.1 |
| Silicon (Si) | ≤ 0.25 |
| Zinc (Zn) | ≤ 0.1 |
| Titanium (Ti) | ≤ 0.15 |
Mechanical Properties
The mechanical characteristics provide insight into the material performance and structural strength for 5052 sheets:
| Property | Value (Typical) | Unit | Notes |
|---|---|---|---|
| Tensile Strength | 228 – 283 | MPa | Varies by temper |
| Yield Strength (0.2%) | 193 – 229 | MPa | Varies by temper |
| Elongation | 7 – 17 | % | Depends on temper & thickness |
| Hardness (Brinell) | 70 – 90 | HB | |
| Density | 2.68 | g/cm³ | Lightweight |
| Modulus of Elasticity | 70 | GPa | Material stiffness |
Available Tempers
Marine aluminium sheet 5052 is offered in multiple temper conditions, influencing its mechanical strength and formability.
| Temper | Description | Effect on Properties |
|---|---|---|
| H32 | Strain-hardened and stabilized | Medium strength and good ductility |
| H34 | Strain-hardened and stabilized | Higher strength, slight loss in formability |
| H36 | Strain-hardened with minimal ductility loss | Offers best balance for marine parts. |
Technical Specifications
| Specification | Details |
|---|---|
| Thickness | 0.5mm to 6mm or customized |
| Width | Up to 2000 mm |
| Length | Standard or customizable |
| Surface Finish | Mill finish, peel ply, or polished |
| Standards | ASTM B209, AS/NZS 1735, BS EN 485 |
Typical Applications of Marine Aluminium Sheet 5052
| Application Type | Description |
|---|---|
| Boat & Ship Hulls | Used widely for small crafts, pleasure boats and commercial vessels due to corrosion resistance. |
| Offshore Platforms | Structural panels and roofing that face saline environments. |
| Marine Fittings & Accessories | Fabrication of brackets, frames, railings, decks, ladders, and storage compartments. |
| Fuel Tanks & Pipelines | Lightweight tanks and pipelines exposed to seawater, not reactive to saltwater corrosion. |
| Shipboard Superstructures | Includes guardrails, seating, deck floors, cockpit panels requiring easy fabrication. |
| Marine Trailer Platform | Platforms and ramps used to transport watercraft taking advantage of rapid draining and no rust. |
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