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5083 Aluminum Plate Marine Grade Sheet

Nov 05, 2025

5083 aluminum plate is a high-magnesium alloy renowned for its excellent corrosion resistance, particularly in marine environments. It offers high strength, good weldability, and exceptional performance in harsh conditions. Available in a variety of tempers, 5083 aluminum is commonly used in shipbuilding, transportation, pressure vessels, and defense applications.

 

Chemical Composition of 5083 Aluminum:

Element % Composition
Magnesium (Mg) 4.0–4.9%
Manganese (Mn) 0.4–1.0%
Chromium (Cr) 0.05–0.25%
Iron (Fe) ≤ 0.4%
Silicon (Si) ≤ 0.4%
Copper (Cu) ≤ 0.1%
Zinc (Zn) ≤ 0.25%
Titanium (Ti) ≤ 0.15%
Aluminum (Al) Balance

 

Mechanical Properties of 5083 Aluminum:

Property Typical Value
Tensile Strength 270–350 MPa
Yield Strength 125–240 MPa
Elongation (at break) 10–20%
Hardness (Brinell) 75–95 HB
Density 2.66 g/cm³
Thermal Conductivity ~121 W/m·K
Modulus of Elasticity ~70 GPa

 

5083 Aluminum Plate Tempers Comparison:

Temper Description Yield Strength Elongation Typical Use
O Annealed for maximum ductility ~125 MPa ≥ 20% Cold forming, cryogenic tanks
H111 Slightly strain-hardened ~145 MPa 17% Marine panels
H112 As fabricated, limited strain-hardening ~150 MPa 15% General purpose
H116 Special marine temper with improved corrosion resistance ~215 MPa 12–16% Shipbuilding, hulls
H321 Stabilized for better corrosion and strength stability ~240 MPa 10–12% LNG tanks, offshore platforms

 

5083 Aluminum vs Other Alloys:

Alloy Strength Corrosion Resistance Weldability Common Use
5083 ★★★★☆ ★★★★★ ★★★★★ Marine, defense, tanks
5086 ★★★☆☆ ★★★★★ ★★★★★ Boats, trucks
5052 ★★☆☆☆ ★★★★☆ ★★★★☆ Panels, fuel tanks
5080 ★★★☆☆ ★★★★★ ★★★★☆ Naval structures
5754 ★★☆☆☆ ★★★★☆ ★★★★☆ Car bodies, packaging
6061 ★★★★☆ ★★★☆☆ ★★★★☆ Structural, aerospace
6082 ★★★★☆ ★★★☆☆ ★★★★☆ Bridges, rail
7075 ★★★★★ ★★☆☆☆ ★★☆☆☆ Aerospace, high-load parts

 

5083 Aluminum Plate Sizes:

Product Temper Thickness (mm) Width (mm) Length (mm)
5083 aluminum plate H111, H112, H116, H321, H131 5–220 1000–2650 500–16000

 

What is 5083 Aluminum Plate Used For?

Common Applications:

Marine hulls and deck structures: Due to its high strength and superior corrosion resistance in saltwater, 5083 marine-grade aluminum is ideal for shipbuilding.

Pressure vessels and LNG tanks: Its excellent weldability and stress corrosion resistance make 5083 aluminum suitable for pressure vessels and LNG tank manufacturing.

Fuel tanks and pipelines: 5083 aluminum provides leak-proof integrity and resists corrosion from fuel, making it reliable for fuel tanks and pipeline systems.

Truck trailers and tankers: Lightweight yet strong, 5083 aluminum improves fuel efficiency and structural performance in transportation vehicles.

Industrial mold base plates: Its good machinability and stability under load make 5083 aluminum a solid choice for heavy-duty base plates.

Special Applications:

Cryogenic storage: 5083 aluminum remains tough and ductile at extremely low temperatures, ideal for liquid gas containment.

Armor plating in military vehicles: Its high strength-to-weight ratio and blast resistance make it suitable for military-grade armor.

Offshore oil and gas platforms: 5083 aluminum resists pitting and crevice corrosion, perfect for offshore structural components.

Aluminum-magnesium battery shells: The high magnesium content of 5083 aluminum enhances durability and safety in battery enclosures and electric vehicle components.

5083 Aluminum Plate

FAQ about 5083 Aluminum:

Can you anodize 5083 aluminum?
Yes, 5083 aluminum can be anodized, though the finish may appear dull or grey due to its high magnesium content. It's typically used for protective anodizing rather than decorative purposes.

Can 5083 aluminum be folded?
Yes, 5083 aluminum can be folded, especially in softer tempers like O or H111. However, due to its high strength, proper tooling and larger bend radii are recommended to avoid cracking.

Is 5083 aluminum weldable?
Yes, 5083 aluminum is highly weldable, making it popular in marine and structural welding applications. It retains good corrosion resistance and strength after welding.

What filler rod for 5083 aluminum?
ER5356 is the most commonly used filler rod for welding 5083 aluminum. It provides strong welds with excellent corrosion resistance, particularly in saltwater environments.

5083 Aluminum Plate Marine Grade Sheet

GNEE, a trusted Chinese supplier, offers stock and custom sizes of 5083 aluminum plates, as well as 5083 round bars, to meet your needs. Contact us for more details.