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High-Quality 5083 Aluminium Sheet from China Suppliers - Durable Marine-Grade Aluminium Factory
Chemical Composition (Mass %)
Element |
Content Range |
Aluminium (Al) |
Balance |
Magnesium (Mg) |
4.0 – 4.9 |
Manganese (Mn) |
0.4 – 1.0 |
Chromium (Cr) |
0.05 – 0.25 |
Silicon (Si) |
≤ 0.4 |
Iron (Fe) |
≤ 0.4 |
Copper (Cu) |
≤ 0.1 |
Zinc (Zn) |
≤ 0.25 |
Titanium (Ti) |
≤ 0.15 |
Mechanical Properties (Typical Values for Common Tempers)
Temper |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
O (Annealed) |
270 – 310 |
110 – 145 |
≥ 20 |
H111/H112 |
260 – 320 |
150 – 200 |
12 – 18 |
H116 (Marine Grade) |
300 – 360 |
200 – 230 |
10 – 16 |
H321 |
290 – 350 |
180 – 220 |
10 – 16 |
Key Characteristics
- ✓ Highest strength among non-heat-treatable aluminium alloys.
- ✓ Retains excellent strength and ductility after welding.
- ✓ Outstanding resistance to seawater and industrial chemical corrosion.
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Not recommended for service temperatures exceeding 65°C (149°F).
Applications
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1. Marine & Offshore Engineering
- Shipbuilding: Hull plates, decks, bulkheads, and superstructures for commercial ships, yachts, and naval vessels.
- LNG Carriers: Cryogenic storage tanks and containment systems.
- Offshore Platforms: Structural components for drilling rigs and production platforms.
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2. Transportation
- Automotive: Tank truck bodies, fuel tanks, air reservoirs, bus body panels, and structural components.
- Railway: Freight car bodies and structural parts.
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3. Pressure Vessels & Industrial Equipment
- Pressure Vessels: For storage of gases and liquids in chemical, petrochemical, and food industries.
- Refrigeration: Cold storage panels and LNG equipment.
- Mining & Construction: Mine skips, cages, and structural supports.
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4. Other Specialized Uses
- Aerospace: Aircraft fuel tanks and non-structural components.
- Electrical: GIS high-voltage switch enclosures.
- General Fabrication: Components requiring high weldability and corrosion resistance.
Other Names for 5083 Aluminium Sheet
- AA5083 Sheet/Plate
- EN AW-5083 Sheet
- UNS A95083 Sheet
- DIN 3.3547 Sheet
- 5083-H116/H321 Marine Aluminum Sheet
Major Global Buyers
Top buyers are in marine, shipbuilding, and pressure vessel sectors: Hyundai Heavy Industries, Daewoo Shipbuilding, China State Shipbuilding Corporation (CSSC), Fincantieri. Also Maersk Tankers, Teekay, and global LNG/LPG carriers. Industrial buyers: Air Liquide, Linde (cryogenic tanks), China CRRC (railway), and BASF/Dow (chemical storage). All demand 5083 for its excellent corrosion resistance, weldability, and marine-grade performance.
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Frequently Asked Questions (FAQ)
Q
What is 5083 aluminium sheet used for?
5083 aluminium sheet is widely used in marine and offshore engineering, shipbuilding, LNG carriers, pressure vessels, transportation (automotive and railway), aerospace fuel tanks, and industrial equipment requiring high corrosion resistance and weldability.
Q
What is the difference between 5083-H116 and 5083-H321 tempers?
Both H116 and H321 are strain-hardened tempers with similar mechanical properties (tensile strength 290–360 MPa). H116 is specifically designated as a marine grade with enhanced resistance to exfoliation and stress corrosion cracking in seawater environments, while H321 is produced through a thermal stabilization process. Both are commonly specified for marine and structural applications.
Q
Is 5083 aluminium suitable for welding?
Yes. 5083 aluminium is renowned for its excellent weldability. It retains high strength and ductility after welding, making it one of the preferred alloys for welded structural applications in shipbuilding, pressure vessels, and marine fabrication.
Q
What is the maximum service temperature for 5083 aluminium?
5083 aluminium is not recommended for use at service temperatures exceeding 65°C (149°F). Prolonged exposure above this temperature can cause sensitization, increasing susceptibility to stress corrosion cracking.
Q
What are the equivalent standards for 5083 aluminium sheet?
5083 aluminium sheet is recognized under several international standards and designations, including AA5083 (Aluminum Association), EN AW-5083 (European standard), UNS A95083 (Unified Numbering System), and DIN 3.3547 (German standard). These all refer to the same alloy composition and properties.
Q
Why is 5083 aluminium preferred for marine applications?
5083 aluminium offers outstanding resistance to seawater and saltwater corrosion, making it ideal for marine environments. Combined with its high strength (the highest among non-heat-treatable alloys), excellent weldability, and low maintenance requirements, it is the material of choice for shipbuilding, offshore platforms, and LNG carrier construction worldwide.