5083 Aluminium Sheet

5083 aluminium sheet is a high-magnesium, non-heat-treatable Al-Mg alloy sheet, renowned for its excellent corrosion resistance, superior weldability, and medium-to-high strength. It is one of the most widely used marine-grade aluminium alloys, offering exceptional performance in harsh environments.

Product Details

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.