5083 Marine Aluminum Plate
Standard: ASTM B928 / EN 485
Advantage: High-magnesium alloy with exceptional seawater corrosion resistance and dependable welded-joint performance.
View technical details →MILL-DIRECT METALLURGICAL SUPPLY · ASTM B928 COMPLIANT
Marine Grade Aluminum Plate & Profiles Manufacturer
for Shipbuilding & Offshore Engineering
Direct mill supply of certified marine grade aluminum plates, sheets, and structural profiles including 5083-H116, 5083-H321, 5086, and marine bulb flats. Engineered for commercial vessels, high-speed patrol boats, yachts, and offshore structures with ABS & DNV compliance.
TECHNICAL SPECIFICATION MATRIX
Comprehensive Marine Grade Aluminum & Alloy Reference
Complete metallurgical breakdown of ASTM, EN, and ISO standard marine aluminum plates, structural profiles, and copper-nickel piping alloys for shipbuilding and offshore engineering.
| Alloy Grade | Primary Temper | Main Composition | Typical Tensile Strength | Primary Marine Application |
|---|---|---|---|---|
| 5083 | H116 / H321 | Mg: 4.0% - 4.9% | >= 305 MPa | Heavy welded ship hulls, LNG carriers, decks, bulkheads |
| 5059 | H116 / H321 | Mg: 5.2% - 5.5% | >= 330 MPa | Ultra-high strength marine plates, fast patrol craft |
| 5383 | H116 / H321 | Mg: 4.3% - 5.2% | >= 315 MPa | High-speed vessels, naval crafts, high-load hulls |
| 5086 | H116 / H32 | Mg: 3.5% - 4.5% | >= 275 MPa | Workboat hulls, superstructures, military craft |
| 5754 | H111 / H32 | Mg: 2.6% - 3.6% | >= 220 MPa | European standard marine plates, tanks, interior cabins |
| 5052 | H32 / H34 | Mg: 2.2% - 2.8% | >= 193 MPa | Interior bulkheads, freshwater tanks, small boat panels |
| 6061 | T6 / T651 | Mg 0.8%-1.2%, Si 0.4%-0.8% | >= 310 MPa | Structural extrusions, masts, stiffener profiles |
| 6082 | T6 / T651 | Mg 0.6%-1.2%, Si 0.7%-1.3% | >= 310 MPa | European structural shapes, heavy deck beams, frames |
| 6005A | T5 / T6 | Mg 0.4%-0.7%, Si 0.5%-0.9% | >= 260 MPa | Extruded bulb flats, complex structural stiffeners |
| C70600 / C71500 | Annealed / Drawn | Cu-Ni (90/10 & 70/30) | >= 275 - 350 MPa | Seawater cooling piping systems, ballast lines, condensers |
MARKET TRANSPARENCY & PROCUREMENT GUIDANCE
Factors Influencing Marine Grade Aluminum Pricing & Mill Sourcing
Understanding LME indexing, processing surcharges, and alloy premiums to secure cost-effective direct mill procurement for large shipbuilding projects.
📊 LME Base Price + Processing Fee
Marine aluminum quotations are calculated based on the London Metal Exchange (LME) primary aluminum cash price plus a dedicated rolling and thermo-mechanical processing premium for 5xxx high-magnesium alloys.
📐 Custom Dimensions & Yield Optimization
Ordering non-standard widths (e.g., 2200mm to 2500mm wide plates) minimizes welding seams in ship hulls but requires dedicated hot-rolling schedules. Mill-direct engagement optimizes yield and scrap costs.
🏷️ Third-Party Class Witness Costs
Projects requiring mandatory ABS, DNV, or LR surveyor witnessing during mechanical testing and ultrasonic examinations include standardized certification and testing fees factored into the final MTC documentation.
ADVANCED ENGINEERING TOOL
Marine Aluminum Weight & Logistics Estimator
Calculate total order weight, check container shipping compliance, and request an instant mill-direct quotation.
METALLURGICAL INTEGRITY
Why 5083 is the Industry Standard for Marine Grade Aluminum Plate
Marine grade aluminum plate relies heavily on non-heat-treatable 5xxx series aluminum-magnesium alloys. Among them, Alloy 5083 provides an optimal balance of high as-welded strength, formability, and superior resistance to marine atmospheric and marine immersion corrosion.
Unlike structural steels, marine aluminum plates significantly reduce top-weight, improving vessel fuel efficiency, cargo payload capacity, and operating speed without sacrificing structural safety margins under rigorous wave-slamming loads.
High Strength-to-Weight
Reduces vessel deadweight, enabling higher fuel economy and speed.
Exfoliation Resistance
H116 and H321 tempers undergo rigorous testing to prevent intergranular corrosion.
Superior Weldability
Compatible with MIG and TIG welding processes using 5183 or 5356 filler wire.
Low Maintenance
Forms a self-repairing passive aluminum oxide film in saline conditions.
PRODUCT CATALOGUE
Featured Marine Aluminum Plates, Profiles & Piping
5083-H116 Marine Aluminum Plate
Standard: ASTM B928 / EN Marine
Advantage: Processed specifically to guarantee resistance to exfoliation corrosion in heavy marine plating.
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5083-H321 Marine Aluminum Plate
Standard: ASTM B928 / ASME SB928
Advantage: Stabilized strain-hardened temper ideal for superstructures, decks, and formed bulkheads.
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5086 Marine Aluminum Plate
Standard: ASTM B209 / EN 573
Advantage: Al-Mg alloy with optimized formability and weldability for workboat hulls and fabrications.
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5052 Marine Aluminum Sheet
Standard: ASTM B209 / EN 485
Advantage: Superior formability and corrosion resistance for light-gauge marine trim, tanks, and cabins.
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5059-H116 Marine Aluminum Plate
Standard: ASTM B928 / EN AW-5059
Advantage: Ultra-high magnesium content (up to 5.5%) offering superior ballistic and structural strength for fast patrol and naval vessels.
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5383-H321 Marine Aluminum Plate
Standard: ASTM B928 / EN Marine
Advantage: Optimized weldability and higher post-weld strength compared to standard 5083, widely used in high-performance shipbuilding.
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Marine Aluminum Checker Plate
Standard: Marine Alloy Tread Plate
Advantage: Raised 5-bar pattern delivering certified slip resistance for decks, walkways, and platforms.
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6082-T6 Marine Structural Extrusions
Standard: EN 755 / EN 12020 (Alloy 6082)
Advantage: Premium European structural alloy providing highest tensile properties among 6xxx series for heavy-load marine frames.
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Marine Aluminum Bulb Flats
Standard: Shipbuilding Stiffener Profile
Advantage: Precision-extruded bulb profiles designed for hull framing and longitudinal stiffening with optimal weight-to-strength ratio.
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Marine Aluminum T-Bars & Angles
Standard: Structural Extrusions (6061/6082)
Advantage: High-load structural shapes used for deck beams, bulkheads, and frame connections in marine construction.
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Marine Copper Nickel Pipes
Standard: ASTM B466 / ASME SB466 (C70600 / C71500)
Advantage: 90/10 and 70/30 Cu-Ni alloy delivering exceptional resistance to seawater corrosion and biofouling for ship piping systems.
View technical details →SECTOR SPECIFIC DEPLOYMENT
Marine Grade Aluminum Plate & Profile Applications
GLOBAL PROJECT REFERENCES
Proven Mill Deliveries for International Shipyards & Marine Engineering
Verified mill-direct performance supplying certified marine grade plates, extrusions, and piping systems for commercial and naval vessel construction worldwide.
QUALITY VERIFICATION PROTOCOL
In-House Metallurgical Testing & Laboratory Controls
To comply with rigorous maritime standards, every master coil and heavy plate batch undergoes strict physical and chemical testing prior to leaving the rolling mill. Our QA laboratory ensures absolute compliance with international criteria.
Direct-Reading Spectrometer Analysis (Chemical Composition)
Universal Tensile Testing Machines (Yield & Elongation)
ASTM G67 Nitric Acid Mass Loss Test (Exfoliation Corrosion)
Phased Array Ultrasonic Flaw Detectors (Internal Integrity)
ENGINEERING KNOWLEDGE HUB
Marine Aluminum Technical Guides
5083 H116 vs H321
Temper comparison for corrosion-sensitive marine plate procurement.
Read guide →ASTM B928 Guide
How to reference ASTM B928 for high-magnesium marine aluminum.
Read guide →Marine Aluminum Welding
Fabrication controls for welded 5xxx-series aluminum structures.
Read guide →Boat Hull Thickness Guide
Factors engineers use when determining aluminum hull plating thickness.
Read guide →QUALITY ASSURANCE & CLASSIFICATION
Mill Inspection & Certification Support
Every batch of marine grade aluminum plate and profile undergoes rigorous quality control, including ultrasonic testing (UT), mechanical tensile testing, and intergranular corrosion testing as dictated by ASTM B928. We provide full mill test certificates (MTC per EN 10204 3.1) and support classification society project reviews.
ASTM B928 / B209 Compliance
EN 10204 3.1 Mill Test Certificates
ABS / DNV / BV Class Support
Ultrasonic Testing (UT) Available
ABS
American Bureau of Shipping
Mill approval for 5083-H116/H321 heavy marine plates and structural shapes.
DNV
Det Norske Veritas
Certified compliance for offshore applications, marine structures, and shipbuilding alloys
BV
Bureau Veritas
Approved high-purity aluminum magnesium alloy materials for commercial ships.
LR
Lloyd's Register
Factory qualification for marine plate rolling, ultrasonic testing, and mechanical validation.
GLOBAL EXPORT LOGISTICS
Seaworthy Packaging & Anti-Oxidation Freight Standards
Engineered packaging safeguards to prevent white rust and transit damage during long-haul ocean container or break-bulk freight shipping.
🛡️ Fumigation-Free Wooden Crates
Robust export-standard plywood boxes interleaved with moisture-barrier film and desiccant packs to withstand marine humidity.
📦 Plastic Interleaving & Paper
Individual sheet protection prevents surface scratching, friction marks, and galvanic reaction during high-vibration ocean transit.
⚓ Steel Strapping & Edge Protectors
Secured with heavy-duty steel bands and reinforced edge guards to ensure safe crane or forklift handling at destination ports.
📑 Complete Shipping Documentation
Includes Commercial Invoice, Packing List, Certificate of Origin (CO), MTC EN 10204 3.1, and Bill of Lading (B/L).
ENGINEERING FAQ
Frequently Asked Questions: Marine Grade Aluminum Plate & Profiles
Why is 5083 aluminum used for ship hulls?
5083 is an Al-Mg alloy containing 4.0%-4.9% Magnesium, offering exceptional seawater corrosion resistance, high tensile strength (>=305 MPa for H116), and excellent weldability without requiring post-weld heat treatment.
What is the difference between 5083 H116 and H321 tempers?
Both H116 and H321 provide guaranteed resistance to exfoliation corrosion for marine environments. H116 is typically specified for plates over a certain thickness with strict limits on precipitate distribution, while H321 involves stabilized strain hardening.
What thickness marine grade aluminum plate is used for boat hulls?
Hull thickness typically ranges from 4mm to 50mm+ depending on vessel LOA (Length Overall), framing spacing, design speed, and classification society rules (ABS, DNV, LR).
What standards do Haomei marine aluminum plates comply with?
Our plates are manufactured strictly according to ASTM B928, EN 485, ISO 6361, and can be supplied with inspection certificates from major marine classification societies.
How to request a quotation for marine grade aluminum plate?
Provide the alloy grade (e.g., 5083-H116), exact thickness, width, length, quantity, required standard (ASTM B928), and destination port for an immediate mill-direct quotation.
Ready to Source Certified Marine Grade Aluminum Plates & Profiles?
Send your project specifications, alloy grade, dimensions, and destination port to our technical sales engineering team.