What Is Marine Grade Aluminium Sheet 5083?
Marine grade class aluminium sheet 5083 is one of the most popular aluminum alloys for harsh environments. It belongs to the 5000 series aluminum-magnesium alloy family. The magnesium content gives it outstanding corrosion resistance, especially in seawater and saltwater environments.
5083 aluminum sheet is the top choice for shipbuilding, offshore structures, and marine equipment worldwide. It offers excellent strength, good weldability, and long service life even in extreme conditions.
If you need a reliable material for marine applications, 5083 aluminum sheet is the industry standard.
Why Choose 5083 Aluminum for Marine Use?
5083 aluminum is not just any aluminum alloy. It has specific properties that make it ideal for marine environments.
Here are the key reasons:
- Highest corrosion resistance among non-heat-treatable alloys
- Excellent seawater resistance – does not rust or corrode easily
- High strength – stronger than 5052 and 1xxx series alloys
- Good weldability – easy to weld without losing strength
- Lightweight – much lighter than steel
- Long service life – proven performance in harsh marine conditions
- Wide certification – meets international marine and military standards
These properties make 5083 the preferred marine grade aluminium sheet for shipbuilders and engineers globally.
5083 Aluminum Sheet Price
What Is the Current Price?
The price of 5083 aluminum sheet depends on several factors. The LME (London Metal Exchange) aluminum price changes daily. This directly affects the final product price.
Factors That Affect 5083 Aluminum Sheet Price
1. Alloy and Temper
5083-H116 and H321 are the most common marine tempers. These tempers require extra processing, which adds to the cost.
2. Thickness and Size
Thicker plates cost more per sheet. Large custom sizes also affect pricing.
3. Surface Finish
Mill finish is standard. Anodized or coated surfaces cost more.
4. Order Quantity
Larger orders get better unit pricing. Bulk buyers save more per ton.
5. Market Conditions
Global aluminum supply and energy costs affect the final price.
Estimated Price Range
| Thickness | Temper | Estimated Price (USD/ton) |
|---|---|---|
| 1.0 – 3.0 mm | H111, O | $2,800 – $3,400 |
| 3.0 – 6.0 mm | H116, H321 | $3,000 – $3,600 |
| 6.0 – 12.0 mm | H116, H321 | $3,100 – $3,800 |
| 12.0 – 50 mm | H116, H321 | $3,200 – $4,000 |
Note: Prices change with market conditions. Contact us for a real-time quote.
5083 Aluminum Plate – Full Specifications
Chemical Composition
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Magnesium (Mg) | 4.0 – 4.9 |
| Manganese (Mn) | 0.40 – 1.0 |
| Chromium (Cr) | 0.05 – 0.25 |
| Silicon (Si) | ≤ 0.40 |
| Iron (Fe) | ≤ 0.40 |
| Copper (Cu) | ≤ 0.10 |
| Zinc (Zn) | ≤ 0.25 |
| Titanium (Ti) | ≤ 0.15 |
Mechanical Properties
| Property | H116 | H321 | O (Annealed) |
|---|---|---|---|
| Tensile Strength | 305 MPa min | 305 MPa min | 270 MPa min |
| Yield Strength | 215 MPa min | 215 MPa min | 115 MPa min |
| Elongation | ≥ 10% | ≥ 10% | ≥ 16% |
| Hardness (Brinell) | ~78 HB | ~78 HB | ~67 HB |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.66 g/cm³ |
| Melting Point | 570 – 638°C |
| Thermal Conductivity | 117 W/m·K |
| Electrical Conductivity | 29% IACS |
| Modulus of Elasticity | 70.3 GPa |
Size Range
| Parameter | Range |
|---|---|
| Thickness | 0.5 mm – 200 mm |
| Width | 500 mm – 2650 mm |
| Length | 500 mm – 16000 mm |
| Common Sheet Size | 4×8 ft (1220 x 2440 mm) |
| Temper | O, H111, H112, H116, H321 |
Aluminium 5083 Data Sheet – Key Technical Information
Temper Explanation
Understanding the temper is important when ordering 5083 aluminum plate.
O Temper (Annealed)
- Fully annealed, softest condition
- Best formability
- Lower strength
- Used for bending and forming applications
H111 Temper
- Slightly strain-hardened
- Good for general fabrication
- Better than O temper in strength
H116 Temper
- Specially designed for marine use
- High resistance to exfoliation and stress corrosion cracking
- Meets ASTM B928 marine specification
- Most popular temper for shipbuilding
H321 Temper
- Stabilized by thermal treatment
- Similar properties to H116
- Also meets marine specifications
- Good for welded marine structures
Corrosion Performance
5083-H116 and H321 pass strict corrosion tests including:
- ASTM G66 (ASSET test for exfoliation)
- ASTM G67 (NAMLT test for intergranular corrosion)
This is why H116 and H321 are the standard tempers for marine grade aluminium sheet 5083.
Marine Grade Aluminum Sheet – Main Applications
5083 aluminum sheet works in many demanding industries. Here are the most common applications:
Shipbuilding and Marine Structures
This is the primary market for marine grade aluminium sheet 5083.
- Ship hulls and decks
- Patrol boats and naval vessels
- Fishing boats and trawlers
- Yachts and sailboats
- Ferries and passenger vessels
- Offshore platforms and structures
- Submarine components
5083 aluminum replaces steel in many marine structures. It saves weight while maintaining strength and corrosion resistance.
Transportation
- Rail car bodies and panels
- Truck bodies and trailers
- Armored vehicles
- Fuel tankers
Pressure Vessels and Storage
- Cryogenic storage tanks (LNG, LPG)
- Pressure vessels
- Chemical storage tanks
- Silos and containers
Construction and Industrial Use
- Structural panels
- Bridge decking
- Mining equipment
- Industrial machinery parts
Marine Grade Aluminum 5083 vs 5052 – What Is the Difference?
Many customers ask about the difference between 5083 and 5052 marine grade aluminum. Both are 5000 series alloys with good corrosion resistance. But they are quite different in performance.
Comparison Table
| Property | 5083 | 5052 |
|---|---|---|
| Mg Content | 4.0 – 4.9% | 2.2 – 2.8% |
| Tensile Strength | 305 MPa (H116) | 228 MPa (H32) |
| Yield Strength | 215 MPa (H116) | 193 MPa (H32) |
| Corrosion Resistance | Excellent (marine grade) | Very Good |
| Weldability | Excellent | Excellent |
| Formability | Good | Excellent |
| Marine Certification | Yes (H116, H321) | Limited |
| Typical Thickness | 1.5 – 200 mm | 0.5 – 50 mm |
| Price | Higher | Lower |
| Best Use | Shipbuilding, offshore | General sheet metal, tanks |
Which One Should You Choose?
Choose 5083 if:
- You need certified marine grade material
- Your application involves direct seawater contact
- You need higher strength
- You are building ships, boats, or offshore structures
Choose 5052 if:
- You need excellent formability
- Cost is the main concern
- Your application does not require full marine certification
- You are making fuel tanks, panels, or enclosures
For true marine grade applications, 5083 is the correct choice.
5083 Aluminum vs 6061 – Quick Comparison
Some customers also compare 5083 with 6061 aluminum.
| Property | 5083 | 6061 |
|---|---|---|
| Series | 5xxx (Al-Mg) | 6xxx (Al-Mg-Si) |
| Tensile Strength | 305 MPa | 310 MPa |
| Corrosion Resistance | Superior in seawater | Good (not marine grade) |
| Weldability | Excellent | Good |
| Heat Treatable | No | Yes |
| Marine Use | Standard choice | Not recommended |
| Machinability | Moderate | Excellent |
5083 is far better than 6061 for marine environments. 6061 can suffer from corrosion in saltwater over time. 5083 maintains its performance even after years of seawater exposure.
Quality Standards and Certifications
Our marine grade class aluminium sheet 5083 meets the following international standards:
| Standard | Description |
|---|---|
| ASTM B209 | Standard for aluminum sheet and plate |
| ASTM B928 | Marine alloy specification (H116, H321) |
| EN 485 | European standard for aluminum sheet |
| EN 573-3 | Chemical composition standard |
| ABS | American Bureau of Shipping approval |
| DNV GL | Det Norske Veritas approval |
| BV | Bureau Veritas certification |
| LR | Lloyd’s Register approval |
Marine classification society approvals (ABS, DNV, BV, LR) are critical for shipbuilding projects. We can provide these certificates upon request.
5083 Aluminum for Sale – How to Buy
Step 1 – Confirm Your Requirements
Before placing an order, confirm these details:
- Alloy: 5083
- Temper: H116, H321, O, or H111
- Thickness (mm)
- Width and length (mm) or standard 4×8 sheet
- Quantity (kg or tons)
- Surface finish required
- Any certifications needed (ABS, DNV, etc.)
Step 2 – Request a Quote
Send your requirements to our sales team. We respond within 24 hours with a detailed price quote including shipping options.
Step 3 – Order Confirmation
We confirm the order with a proforma invoice. Payment terms are flexible: T/T, L/C, or other arrangements.
Step 4 – Production and Inspection
We produce your order and inspect every plate before shipment. Mill test certificates are provided for every batch.
Step 5 – Shipping and Delivery
We ship worldwide by sea, air, or land. Standard export packing includes waterproof wrapping and wooden pallets.
Minimum Order Quantity
| Order Type | MOQ |
|---|---|
| Standard stock size | 1 ton |
| Custom size | 2 tons |
| Mixed alloy order | 3 tons |
Marine Grade Aluminum Sheet Price – How to Get the Best Deal
Here are practical tips to get the best price on marine grade aluminum sheet:
1. Order in larger quantities
More volume means better unit pricing. Even 5 tons vs 1 ton can make a significant price difference.
2. Choose standard sizes
4×8 ft (1220 x 2440 mm) sheets are always in stock. Custom sizes cost more and take longer.
3. Order in advance
Aluminum prices fluctuate. Ordering when the market is stable saves money.
4. Buy directly from the manufacturer
Skip traders and distributors. Direct factory prices are always lower.
5. Combine different products
If you need multiple products, combine them in one order to reduce freight costs.
Why Choose Us as Your 5083 Aluminum Supplier?
We are a professional marine grade aluminium sheet 5083 manufacturer and exporter. Here is what sets us apart:
✅ Direct Factory Pricing
We produce everything in-house. No middlemen. You always get factory-direct pricing.
✅ Marine Certifications Available
We provide ABS, DNV GL, BV, and LR certifications for marine projects. Full documentation support.
✅ Wide Size Range
Thickness from 0.5 mm to 200 mm. Width up to 2650 mm. Custom sizes available.
✅ All Marine Tempers in Stock
H116 and H321 are always available from stock. Fast delivery for urgent orders.
✅ Strict Quality Control
Each plate passes chemical composition testing, mechanical property testing, and corrosion resistance testing.
✅ Export Experience
We export to over 60 countries. Our team handles all shipping documents including CO, mill certificates, and packing lists.
✅ Responsive Customer Service
Our technical team responds within 24 hours. We support English, Arabic, Spanish, and other languages.
Countries We Export To
We supply 5083 aluminum plate and marine grade aluminum sheet to customers worldwide:
| Region | Key Markets |
|---|---|
| Middle East | UAE, Saudi Arabia, Qatar, Kuwait, Oman |
| Southeast Asia | Vietnam, Indonesia, Thailand, Philippines, Malaysia |
| Europe | Norway, Netherlands, Germany, Poland, Greece |
| Africa | Nigeria, South Africa, Egypt, Kenya |
| Americas | USA, Canada, Brazil, Mexico |
| Oceania | Australia, New Zealand |
We have extensive experience serving shipyards, fabricators, and distributors in all these regions.
Frequently Asked Questions
Q1: What temper is best for marine use?
H116 and H321 are the standard marine tempers for 5083 aluminum. Both meet ASTM B928 requirements. H116 is the most widely used in shipbuilding.
Q2: What is the difference between 5083-H116 and H321?
Both offer similar mechanical properties and corrosion resistance. H116 is strain-hardened. H321 is thermally stabilized. Either is acceptable for marine applications. H116 is more commonly available.
Q3: Can 5083 aluminum be welded?
Yes. 5083 has excellent weldability. Use 5183 or 5356 filler wire for best results. Welded joints retain about 90% of base metal strength.
Q4: Is 5083 aluminum magnetic?
No. Aluminum is not magnetic. This is an advantage in certain marine and electronic applications.
Q5: What standard sheet size is available?
The most common size is 4×8 ft (1220 x 2440 mm). We also stock 5×10 ft and other standard sizes. Custom sizes are available.
Q6: Do you provide mill test certificates?
Yes. We provide full mill test certificates (MTC) for every order. The certificate includes chemical composition and mechanical properties.
Q7: How long is the delivery time?
Stock items ship within 3–7 days. Custom orders take 10–20 days depending on quantity and specification.
Q8: Can you provide ABS or DNV certified plates?
Yes. We can supply ABS, DNV GL, BV, and LR approved 5083 aluminum plates for shipbuilding projects. Please specify your certification requirement when requesting a quote.