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Help Center5083-H116 Aluminum Plate 6mm-50mm Thickness Marine Grade for Shipbuilding
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As a professional manufacturer and exporter from Hemaokang Steel (Shandong) Co., Ltd., we are proud to offer our premium 5083-H116 Aluminum Plate in thicknesses ranging from 6mm to 50mm, specifically designed for marine and shipbuilding applications. Our plates combine exceptional corrosion resistance, high strength-to-weight ratio, and excellent weldability, making them the ideal choice for demanding marine environments. With ISO9001 certification and an annual export value exceeding US$50 million, we ensure consistent quality and reliable supply to shipyards worldwide.
The 5083 alloy is recognized as the leading marine-grade aluminum due to its superior resistance to seawater corrosion and its ability to maintain strength at low temperatures. The H116 temper provides optimal stress corrosion cracking resistance, which is critical for structural components in ships and offshore platforms. Whether you need plates for hulls, decks, superstructures, or tanks, our 5083-H116 plates meet the strictest international standards.
Below is a detailed overview of the product specifications and key features:
| Parameter | Value Range |
|---|---|
| Thickness | 6mm – 50mm |
| Width | 1000mm – 2500mm (customizable) |
| Length | 2000mm – 12000mm (customizable) |
| Temper | H116 |
| Tensile Strength (MPa) | ≥ 275 |
| Yield Strength (MPa) | ≥ 125 |
| Elongation (%) | ≥ 12 |
| Corrosion Resistance | Excellent in seawater |
Key Features & Benefits:
- Superior Corrosion Resistance: The 5083 alloy has a natural oxide layer that protects against saltwater, reducing maintenance costs and extending service life.
- High Strength-to-Weight Ratio: Lightweight yet strong, allowing for fuel-efficient vessel designs without compromising structural integrity.
- Excellent Weldability: Suitable for various welding processes (MIG, TIG, resistance welding) with minimal loss of strength at the weld zone.
- Low-Temperature Toughness: Retains ductility and impact resistance even in sub-zero conditions, ideal for Arctic-class ships.
- Stress Corrosion Cracking Resistance: H116 temper specifically designed to resist SCC, a common failure mode in marine aluminum.
- Custom Sizes Available: We can cut plates to your exact dimensions, reducing material waste and fabrication time.
- Surface Finishing Options: Mill finish, brushed, polished, or coated (e.g., PVDF, anodized) upon request.
Detailed Product Description:
Our 5083-H116 aluminum plates are manufactured using advanced hot-rolling and heat-treatment processes, ensuring uniform mechanical properties and flatness. Each plate is inspected and tested according to ASTM B209, EN 485, or GB/T 3880 standards. We can provide mill test certificates for every batch, guaranteeing traceability and compliance with classification societies (e.g., DNV, ABS, Lloyd's) – though specific certifications are available upon request.
The chemical composition of 5083 includes magnesium (4.0-4.9%), manganese (0.4-1.0%), and small amounts of silicon, iron, copper, and zinc, all carefully controlled to achieve the desired properties. The H116 temper is achieved through strain hardening and a special stabilization heat treatment, which enhances resistance to exfoliation corrosion and stress corrosion cracking.
Typical applications for our 5083-H116 plates include:
- Ship hulls, decks, and bulkheads
- Superstructures and masts
- Offshore platforms and marine equipment
- Pressure vessels for cryogenic liquids
- Military and naval vessels (fast patrol boats, landing craft)
- LNG tank lining and support structures
We understand that the marine industry demands reliability and consistency. That's why we maintain a large inventory of 6mm-50mm thickness plates in various widths and lengths, ready for quick delivery. Our quality control team conducts rigorous inspections including ultrasonic testing, dimensional checks, and surface defect analysis.
Why Choose Hemaokang Steel?
Established in 2025, Hemaokang Steel (Shandong) Co., Ltd. has quickly become a trusted supplier in the global aluminum market. With a dedicated team of 51-100 employees and an annual export value of US$50 million to US$100 million, we serve customers across all major regions including North America, Europe, Asia, Africa, and Oceania. Our ISO9001 certification ensures that every product meets the highest quality standards. We offer competitive pricing, flexible payment terms, and professional after-sales support. Whether you need a small sample or a bulk order for a large shipbuilding project, we are committed to exceeding your expectations.
Contact us today to discuss your requirements or request a quotation. Our team of experts will help you select the right grade, size, and finish for your application. Experience the Hemaokang difference – quality, reliability, and service you can trust.
Frequently Asked Questions (FAQ)
Q1: Is the 5083-H116 aluminum plate suitable for direct contact with seawater?
A: Yes, 5083-H116 is specifically designed for marine environments and offers excellent resistance to seawater corrosion. It is widely used in ship hulls, offshore platforms, and other submerged structures.
Q2: Can you provide plates with classification society certification (e.g., DNV, ABS, Lloyd's)?
A: Yes, we can arrange for third-party inspection and certification from classification societies upon request. Please contact our sales team with your specific requirements.
Q3: What is the minimum order quantity (MOQ) for these plates?
A: For standard sizes, the MOQ is typically 1 ton. For custom sizes or special thicknesses, the MOQ may vary. We welcome small trial orders for testing purposes.
Q4: How do you ensure the flatness of thick plates (e.g., 50mm)?
A: Our plates are produced using advanced leveling equipment, and we routinely check flatness per ASTM standards. Tighter flatness tolerances are available upon request.
Q5: Can you cut the plates to specific shapes or sizes?
A: Yes, we offer custom cutting services including plasma cutting, sawing, and machining. You can provide your drawings, and we will deliver ready-to-weld pieces.
Q6: What is the typical lead time for an order?
A: For standard sizes in stock, delivery can be within 7-15 days. For custom orders or large quantities, lead time is usually 20-30 days depending on production schedule.
Q7: How does the 5083-H116 compare to 6061-T6 in marine applications?
A: 5083-H116 offers superior corrosion resistance and low-temperature toughness compared to 6061-T6, making it the preferred choice for seawater environments. 6061-T6 has higher strength but is more susceptible to corrosion in marine settings.
Q8: Do you provide samples before bulk order?
A: Yes, we can provide small samples (e.g., 300x300mm) for evaluation. The sample cost is negotiable, and shipping charges apply. Please contact us for details.
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