5083 aluminum alloy

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5083 aluminum alloy is known for exceptional performance in extreme environments. 5083 is highly resistant to attack by both seawater and industrial chemical environments. Alloy 5083 also retains exceptional strength after welding. It has the highest strength of the non-heat treatable alloys but is not recommended for use in temperatures in excess of 65°C.

With good overall mechanical properties, 5083 aluminum alloy benefits from good weldability and retains its strength after this process. The material combines excellent ductility with good formability and performs well in low-temperature service.

Applications of 5083 aluminum alloy

5083 aluminum alloy is a typical Al-Mg-Si alloy with high corrosion and rust resistance. The underwater part of the hull, especially in the sea water, must be able to resist the corrosion of seawater. The most commonly used ones are 5083-H116 and 5083-H321 aluminum sheets.
The keel is a longitudinal member connecting the bow post and the stern post in the center of the base of the hull. 5083 aluminum sheet is the common choice.
5083 aluminum alloy is mainly used in the deck, engine pedestal, side of the ship, and the outer plate of the bottom of the ship.
5083-H116 aluminum sheet is also used in transportation field, such as automobile and aircraft fuel tank, etc.

Specification of 5083 aluminum alloy

Chemical composition

Alloy	Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Zr	Unit
5083	≦0.4	≦0.4	≦0.1	0.40-1.00	4.00-4.90	0.05-0.25	≦0.25	≦0.15	-	Wt%

Mechanical properties

Alloy	Temper	Rm(Mpa) Tensile strength	Rp0.2(MPa) Yield strength	Elongation A(%)	Exfoliation corrosion	Intergranular corrosion Mg/cm2	Certification
5083	O/H111/H112	≥275	≥125	≥16	-	-	DNV, GL, ABS, CCS, BV, LR
	H116	≥305	≥215	≥10	≦PB	≦15
	H321	305-385	215-295	≥12	≦PB	≦15

Size

Alloy

Temper

Thickness(mm)

Width（mm）

Length(mm)

5083

O,H12,H14,

H16,H18,H19,

H22,H24,H26,

H28,H32,H34

H36,H38,H111,

H112,H114,H 116,H321

3-50 mm

2000 mm or customized

6000/8000/9000/12000mm or customized

Advantages of 5083 aluminum alloy

1. 5083 aluminum plate is of low density, contributing to the light weight of the ships and less fuel consumption. It can also improve the the length-to-width ratio of the ship and stability,which makes the ship easier to maneuver.

2. 5083 aluminum alloy is of extremely good corrosion resistance, reducing maintenance costs such as oiling.

3. It has good processing and forming performance, which is easy to be processed in various forms such as cutting, stamping, cold bending, forming and cutting. This is helpful for the light weight and reasonable structure of the ships.

4. 5083 aluminum sheet is of good welding performance, reducing numbers of welds.