5083 H116 Marine Grade Aluminum Alloy Plate 3mm-200mm Thickness for Shipbuilding Hull Structure Applications
The 5083 H116 aluminum alloy plate is the premier material for marine and offshore applications, engineered to deliver maximum corrosion resistance in aggressive seawater environments. With the highest strength among non-heat-treatable alloys and superior weldability, it is the material of choice for ship hulls, superyacht structures, offshore platforms and cryogenic storage tanks. The H116 temper is specifically designed to resist exfoliation and intergranular corrosion in marine service.
- Premium Marine Alloy: 4.0-4.9% magnesium content delivers the highest strength and best corrosion resistance in the 5000 series
- H116 Special Temper: Specifically processed to provide immunity to exfoliation corrosion and intergranular attack in saltwater service
- Classification Society Approved: Certified by DNV, ABS, BV and LR to meet shipbuilding and offshore structure requirements
- Exceptional Weldability: Excellent TIG and MIG welding characteristics with 5356 filler maintaining joint strength and corrosion resistance
- Cryogenic Performance: Retains toughness and ductility at temperatures as low as -196°C for LNG containment systems
- Stress Corrosion Cracking Resistant: Specifically processed grain structure eliminates sensitization to SCC in marine environments
| Element | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Al |
|---|---|---|---|---|---|---|---|---|---|
| Min | - | - | - | 0.40 | 4.00 | 0.05 | - | - | Remainder |
| Max | 0.40 | 0.40 | 0.10 | 1.00 | 4.90 | 0.25 | 0.25 | 0.15 |
| Property | Value (Thickness ≤ 50mm) |
|---|---|
| Tensile Strength | ≥ 305 MPa |
| Yield Strength | ≥ 215 MPa |
| Elongation | ≥ 10% |
| Hardness (Brinell) | 75 HB |
| Density | 2.66 g/cm³ |
| Exfoliation Corrosion | P (Pass) per ASTM G66 |
| Intergranular Corrosion | ≤ 150 μm mass loss per ASTM G67 |
| Parameter | Range |
|---|---|
| Thickness | 3mm - 200mm |
| Width | 1000mm - 3300mm |
| Length | 2000mm - 12000mm or Custom |
| Temper | H116, H321, H112, O |
| Ultrasonic Testing | EN 10160 Class A / ASTM B594 Class AA available |
- Fast ferry and patrol boat hulls and superstructures
- Luxury yacht and superyacht construction
- Offshore oil and gas platform topside modules
- LNG carrier spherical and membrane tanks
- Naval and coast guard vessel structures
- Cryogenic pressure vessels and heat exchangers
- Subsea and deepwater equipment structures
- Chemical tanker cargo tanks
- Classification Society Certification: DNV, ABS, BV and LR material certification upon request with full traceability
- Ultrasonic Testing Available: 100% UT inspection per EN 10160 Class A or ASTM B594 Class AA standards
- Intergranular Corrosion Testing: ASTM G67 testing reports provided for each production lot
- Marine Industry Experience: 15+ years supplying aluminum plates to shipyards and offshore fabricators worldwide
- Large Dimensions: Single plates available up to 3300mm width and 12000mm length reducing weld seams
- Dedicated Export Packaging: Fumigated wooden pallets with full moisture protection for ocean freight
Contact our marine aluminum specialists today for a comprehensive quotation on 5083 H116 shipbuilding plates. Technical datasheets, mill certificates and classification society approvals provided with every order.
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