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.

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.

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.







