Haomei Aluminum supplies 5086 marine aluminum plate for boat building, marine fabrication and welded structures where seawater corrosion resistance, dependable strength and weldability are important. Marine-grade material documentation and classification society certification, including ABS, DNV, BV, LR and CCS approval where required, can be arranged according to project specifications and application requirements.
5086 Marine Aluminum Plate is a high-strength 5xxx-series aluminum alloy engineered for long-term service in seawater, salt spray, humid coastal climates, and industrial marine environments. With magnesium as its primary alloying element, 5086 combines excellent corrosion resistance, reliable weldability, and medium-to-high strength, making it a preferred material for shipbuilding, offshore fabrication, workboats, yachts, and welded marine structures.
For projects that require durable aluminum plate without the weight penalty of steel, 5086 is widely selected for hull structures, decks, bulkheads, superstructures, pressure vessels, and marine transportation equipment.
5086 Marine Aluminum Plate Specifications
| Item | Details |
| Alloy | AA 5086 / EN AW-5086 |
| Alloy Series | 5xxx aluminum-magnesium alloy |
| Main Alloying Element | Magnesium |
| Temper | H116, H32, H34 and other available tempers upon request |
| Product Form | Hot-rolled aluminum plate, cut-to-size plate |
| Thickness | Custom thicknesses available |
| Width | Standard and custom widths available |
| Length | Standard mill lengths or precision cut lengths |
| Surface | Mill finish, brushed, PVC-coated, or customized surface protection |
| Standards | ASTM, EN, AMS, ABS, DNV, LR, BV and other project requirements subject to confirmation |
For marine classification projects, material certificates and third-party inspection documents can be provided according to order requirements.
Why Choose 5086 Marine Aluminum Plate?
Outstanding Seawater Corrosion Resistance
5086 has excellent resistance to seawater corrosion and marine atmospheric exposure. It is especially suitable for vessels and structures operating in coastal, offshore, and saltwater environments. Compared with many conventional aluminum grades, 5086 offers more dependable long-term performance where corrosion protection is a priority.
Strong Welded Performance
Welding is essential in marine fabrication. 5086 marine aluminum plate has very good weldability and maintains useful strength after welding when proper filler wire, welding procedures, and fabrication practices are used. This makes it a practical material for large hull sections, tanks, frames, decks, and custom marine assemblies.
Medium-to-High Strength
As a non-heat-treatable alloy, 5086 gains strength through strain hardening rather than heat treatment. It delivers a balance of strength, formability, and corrosion resistance that suits demanding structural applications.
Lightweight Construction Advantage
Using 5086 aluminum plate can reduce vessel weight compared with steel structures. A lighter hull may help improve payload capacity, fuel efficiency, speed, and maneuverability, depending on vessel design and operating conditions.
For other marine plate, you may also compare 5083 marine aluminum plate and 5052 marine aluminum plate.
5086 H116, H32 and H34 Aluminum Plate
We supply 5086 marine aluminum plate in common marine and structural tempers, including:
| Temper | Features | Typical Use |
| H116 | Excellent resistance to exfoliation corrosion; suitable for marine environments | Hull plating, decks, offshore structures, shipbuilding |
| H32 | Strain-hardened and stabilized; good balance of strength and forming performance | Marine tanks, structural components, transportation equipment |
| H34 | Higher strain-hardened strength than H32 | Components requiring improved strength and dimensional stability |
5086-H116 Aluminum Plate
5086-H116 is one of the most requested tempers for marine construction. It is commonly used where resistance to exfoliation corrosion and saltwater exposure is essential, including hull plating, ship decks, side shells, and offshore equipment.
5086-H32 Aluminum Plate
5086-H32 provides stable performance and good workability. It is suitable for fabricated marine components, welded structures, storage tanks, and general structural applications.
5086-H34 Aluminum Plate
5086-H34 offers a higher strength level while retaining the corrosion resistance and weldability associated with the 5xxx marine aluminum alloy family. It can be selected for structural components where additional hardness is beneficial.
5086 Marine Aluminum Plate Chemical Composition
| SI | CU | MN | MG | CR | ZN | Other |
| 0.40% | 0.35% | 0.10% | 0.20-0.70% | 3.5-4.5% | 0.10-0.20% | 0.05-.10% |
5086 Marine Aluminum Plate Mechanical Properties
| Alloy | Temper | Rm(Mpa) Tensile strength | Rp0.2(MPa) Yield strength | Elongation A(%) | Certification |
| 5086 | O/H111 | 240-305 | ≥95 | ≥16 | DNV, GL, ABS, CCS, BV, LR |
| H112 | ≥250 | ≥125 | ≥8 | ||
| H116 | ≥275 | ≥195 | ≥10 |
Where Is 5086 Marine Aluminum Plate Used?
Boat & Ship Hulls
Used for selected hull structures, side panels, bottom structures and fabricated components where marine corrosion resistance and weldability are important.
Marine Decks
Suitable for decks, platforms and fabricated structural assemblies where low weight and corrosion resistance help reduce maintenance requirements.
Superstructures
Used in selected marine superstructure components where weight saving can contribute to vessel efficiency and payload capacity.
Yachts & High-Speed Craft
Aluminum's low density makes 5086 attractive for fabricated marine structures where structural weight is an important design factor.
Offshore Equipment
May be specified for selected offshore structures and equipment where a corrosion-resistant aluminum alloy is appropriate to the service conditions.
Tanks & Welded Fabrications
Its weldability and corrosion resistance make it suitable for various fabricated tanks, marine components and structural assemblies.
5086 vs 5083 Marine Aluminum Plate
5086 and 5083 are both widely recognized 5xxx-series aluminum alloys for demanding corrosion-resistant and marine-related applications, but they are not interchangeable in every project. The correct choice depends on the required strength, fabrication conditions, thickness and governing specification.
- 5086 is widely used for welded marine structures, hulls, decks, and offshore components.
- 5083 is often selected for demanding marine and cryogenic applications requiring very high strength and corrosion resistance.
| Consideration | 5086 | 5083 |
| Alloy Family | 5xxx Al-Mg | 5xxx Al-Mg-Mn |
| Marine Corrosion Resistance | Excellent for suitable marine service | Excellent for suitable marine service |
| Weldability | Very good | Very good |
| Typical Marine Forms | Sheet and plate | Sheet and plate |
| Common Marine Tempers | H116 and other specified tempers | H116, H321 and other specified tempers |
| Selection Principle | Select when 5086's combination of strength, corrosion resistance and fabrication characteristics matches the project specification. | Select when 5083's mechanical properties and marine specification are better aligned with the structural design. |
Need help comparing alloys? Compare 5083 Marine Aluminum Plate .
Quality Control for Marine Aluminum Plate
Our 5086 aluminum plates can be supplied with quality documentation based on customer requirements, including:
- Chemical composition analysis
- Mechanical property testing
- Thickness and dimensional inspection
- Surface quality inspection
- Ultrasonic testing where required
- Mill Test Certificate / EN 10204 3.1 certification
- Third-party inspection support
- Marine classification certificates subject to specification and order quantity
Custom 5086 Aluminum Plate
We provide flexible sourcing options for marine fabricators, shipyards, distributors, and engineering contractors:
- Standard and non-standard plate sizes
- Custom cutting service
- Protective film or paper interleaving
- Export seaworthy packaging
- Small trial orders and bulk project orders
- Material certificates and inspection support
- Fast quotation based on drawings or detailed specifications
Need 5086 Aluminum Plate?
Send us your alloy, temper, plate size, quantity, required standard, and destination information for a fast quotation.
Request a Quote5086 Marine Aluminum Plate Packaging
Surface Protection
Protective paper or film helps keep the plate surface clean and reduces scratches during handling, stacking and transit.
Moisture Protection
Export packing is designed to limit moisture exposure during storage and overseas shipment, particularly in humid conditions.
Reinforced Packing
Wooden pallets, skids or other suitable supports are selected according to plate thickness, dimensions and shipment weight.
Container Loading
Packing and loading arrangements are planned around the plate size, space and the customer's unloading requirements.
Frequently Asked Questions – 5086 Marine Aluminum Plate
Is 5086 aluminum suitable for seawater?
Yes. 5086 is a marine-grade aluminum alloy with strong resistance to seawater corrosion and marine atmospheric conditions. It is commonly used in boatbuilding, ship structures, offshore equipment, and welded marine fabrication.
What is the difference between 5086-H116 and 5086-H32?
5086-H116 is commonly specified for marine applications requiring improved resistance to exfoliation corrosion. 5086-H32 is strain-hardened and stabilized, providing a practical balance of strength and workability.
Can 5086 marine aluminum plate be welded?
Yes. 5086 has excellent weldability and is widely used for welded hulls, decks, tanks, and structural assemblies. Welding parameters and filler materials should be selected according to the project specification.
Is 5086 aluminum heat treatable?
No. 5086 is a non-heat-treatable aluminum alloy. Its strength is developed primarily through strain hardening and temper control.
Can you provide cut-to-size 5086 aluminum plate?
Yes. 5086 marine aluminum plate can be supplied in standard mill sizes or cut to customer-specified dimensions to help reduce processing time and material waste.
Can Haomei supply 5086 H34 aluminum plate?
Yes. 5086 H34 is a recognized temper condition for the alloy and can be supplied for suitable applications. Availability depends on plate dimensions, production requirements, and the applicable specification.
What standards can be specified for 5086 marine aluminum plate?
Depending on the application and purchase specification, ASTM B928/B928M and ASTM B209/B209M may be applicable. Marine projects should confirm the exact standard, alloy-temper combination, and inspection requirements before production.