5052 5083 alloy 16 gauge aluminum sheet for boat building
5052 Aluminum Alloy
5052 aluminum alloy is a non-heat treatable alloy known for its exceptional corrosion resistance, especially against saltwater, making it a popular choice for marine environments. It has good weldability, medium strength, and excellent workability.
5083 Aluminum Alloy
5083 aluminum alloy offers superior strength compared to 5052 while maintaining comparable corrosion-resistance levels. It's specifically designed for saltwater duties and is commonly applied to ship hulls, tankers, naval vessels, and high-performance boats.
16 Gauge Aluminum Sheet Specifications
| Alloy | Thickness (Gauge) | Thickness (mm) | Temper | Typical Finish |
|---|---|---|---|---|
| 5052 | 16 gauge | 1.5 mm | H34/H36 | Smooth/Marine |
| 5083 | 16 gauge | 1.5 mm | H116/H111 | Smooth/Marine |
Note: Thickness tolerance for 16 gauge aluminum sheet generally ranges from ±0.03 mm to ±0.06 mm depending on production standards.
Chemical Composition
| Element | 5052 (wt%) | 5083 (wt%) |
|---|---|---|
| Aluminum (Al) | Remainder | Remainder |
| Magnesium (Mg) | 2.2 – 2.8 | 4.0 – 4.9 |
| Chromium (Cr) | 0.15 – 0.35 | 0.05 – 0.25 |
| Manganese (Mn) | Max 0.1 | 0.4 – 1.0 |
| Iron (Fe) | Max 0.4 | Max 0.4 |
| Silicon (Si) | Max 0.25 | Max 0.4 |
| Copper (Cu) | Max 0.1 - 0.25 | Max 0.1 |
| Zinc (Zn) | Max 0.1 | Max 0.25 |
Mechanical Properties
| Property | 5052-H36 | 5083-H116 |
|---|---|---|
| Tensile Strength | 28,000 – 34,000 psi (193 – 235 MPa) | 38,500 psi (265 MPa) |
| Yield Strength (0.2% offset) | 18,000 psi (124 MPa) | 24,500 psi (170 MPa) |
| Elongation7.5% | 12 – 20% | 12% |
| Hardness (Brinnell) | 75 – 85 | 80 – 90 |
| Density | ~2.68 g/cm³ | ~2.66 g/cm³ |
Features for Boat Building
- Enhanced Corrosion Resistance: Both alloys offer exceptional resistance against saltwater and marine atmospheric corrosion.
- Excellent Weldability: Suitable for MIG, TIG, and resistance welding; minimal post-weld heat treatment necessary.
- Good Formability: Easy to shape and contour for custom boat hull designs.
- Lightweight: Aluminum sheets significantly reduce overall boat weight, improving speed and fuel efficiency.
- Durability: Higher fatigue and impact resistance especially in 5083, ideal for rough marine conditions.
- Low Maintenance: Resistant to rust and corrosion decreases long-term maintenance costs.
Applications in Boat Building
| Application | Preferred Alloy | Benefits |
|---|---|---|
| Hull planking and bottom sheets | 5083 | High strength, durability against impact and fatigue |
| Superstructure and decks | 5052 | Easier forming, weight saving, aesthetic finish |
| Fuel, water, and storage tanks | 5052 | Superior corrosion resistance, easy weldability |
| Small pleasure boats and canoes | 5052 | Lightweight and corrodes minimally |
| Paneling and fittings | 5052 and 5083 | Custom shapes and strong assemblies |
| Characteristic | 5052 | 5083 |
|---|---|---|
| Corrosion Resistance | Excellent, especially saltwater | Excellent, ideal for marine saltwater |
| Strength | Medium | High |
| Weldability | Very good | Very good |
| Cost | Lower | Higher |
| Common Marine Uses | Small boats, tanks, superstructures | Large vessels, hulls, longitudinal framing |
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