High Strength Marine Grade 5083 Aluminum Alloy For Ship Hull Plate
5083 aluminum remains a top choice for ship hulls due to its marine-grade durability, weldability,
and lightweight properties.
Typical Thickness
♦ Thin plates: 3–6 mm (small boats, non-critical areas).
♦ Medium plates: 6–12 mm (most commercial vessels, yachts).
♦ Thick plates: 12–25 mm (large ships, high-stress zones like keels).
Typical Tempers
H116/H321:
H116: Optimized for stress corrosion resistance (ideal for marine environments).
H321: Stabilized after hot rolling, balances strength and corrosion resistance.
O (Annealed): Superior formability but lower strength; requires post-weld heat treatment.
Physical properties for 5083 aluminum alloy
| Property | Value |
| Density | 2650 kg/m3 |
| Melting Point | 570°C |
| Modulus of Elasticity | 72 GPa |
| Electrical Resistivity | 0.58 x 10-6 Ω.m |
| Thermal Conductivity | 121 W/m.K |
| Thermal Expansion | 25 x 10-6/K |
Key Advantages
♦ Superior Cryogenic Performance:
Retains high toughness at liquid hydrogen (-253°C) and oxygen (-183°C) temperatures without
embrittlement.
♦ Fuel Compatibility:
Resistant to aviation fuels (e.g., RP-1), hydrazine, and oxidizers (e.g., LOX).
♦ Low-Temperature Toughness:
No brittle fracture risk in Arctic/polar applications.
♦ Weldability:
Compatible with TIG, laser, and friction stir welding (FSW), with weld joint efficiency ≥90%.
♦ Fatigue Resistance:
Low crack propagation rate under cyclic loading, ideal for reusable spacecraft (e.g., rockets).
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High Strength Marine Grade 5083 Aluminum Alloy For Ship Hull Plate Images
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