China High-Quality 5083 Aluminium Sheet from China Suppliers - Durable Marine-Grade Aluminium Factory Products Manufacturers, Manufacturer

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China High-Quality 5083 Aluminium Sheet from China Suppliers - Durable Marine-Grade Aluminium Factory Products Manufacturers, Manufacturer

Our 5083 aluminium sheet, a premium Al-Mg alloy, is a high-magnesium, non-heat-treatable material recognized for its outstanding corrosion resistance, excellent weldability, and medium-to-high strength. As one of the leading marine-grade aluminium alloys, it delivers superior performance even in the most challenging environments. Sourced from trusted suppliers in China and manufactured in our state-of-the-art factory, this alloy is ideal for a variety of applications in marine, industrial, and architectural settings.

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Product Description

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.

⚠️ Not recommended for service temperatures exceeding 65°C (149°F).

Applications

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.

2 Transportation

Automotive: Tank truck bodies, fuel tanks, air reservoirs, bus body panels, and structural components.
Railway: Freight car bodies and structural parts.

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.

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 makes 5083 aluminium sheet suitable for marine applications?

5083 aluminium offers outstanding resistance to seawater and saltwater corrosion, making it the preferred choice for shipbuilding, offshore platforms, and LNG carriers. Its H116 and H321 tempers are specifically certified as marine grade for long-term immersion and splash zone environments.

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 produced by controlled rolling and is primarily used for marine plate applications. H321 is produced by thermal stabilization and is also widely used in shipbuilding and pressure vessel fabrication. Both meet marine-grade corrosion resistance requirements.

Q Can 5083 aluminium sheet be welded easily?

Yes. 5083 aluminium is known for its excellent weldability. It retains high strength and ductility in the heat-affected zone after welding, which is critical for structural applications. It is typically welded using MIG (GMAW) or TIG (GTAW) processes with compatible 5356 or 5183 filler wire.

Q What is the maximum service temperature for 5083 aluminium?

5083 aluminium sheet is not recommended for continuous service at temperatures exceeding 65°C (149°F). Prolonged exposure above this temperature can cause sensitization, leading to reduced corrosion resistance. However, it performs excellently at cryogenic temperatures, making it ideal for LNG and cold storage applications.

Q What international standards apply to 5083 aluminium sheet?

5083 aluminium sheet is recognized under multiple international standards: AA5083 (Aluminum Association, USA), EN AW-5083 (European Standard), UNS A95083 (Unified Numbering System), and DIN 3.3547 (German Standard). It also complies with ASTM B209 for sheet and plate products.

Q How does 5083 compare to other aluminium alloys like 5052 or 6061?

5083 offers significantly higher strength and superior corrosion resistance compared to 5052, making it preferred for heavy-duty marine and structural applications. Compared to 6061, 5083 has better weldability and corrosion resistance in marine environments, though 6061 offers higher strength after heat treatment and is more commonly used in aerospace and precision machining applications.

Product Detail

China High-Quality 5083 Aluminium Sheet from China Suppliers - Durable Marine-Grade Aluminium Factory Products Manufacturers, Manufacturer

Product Description

Chemical Composition (Mass %)

Mechanical Properties (Typical Values for Common Tempers)

Key Characteristics