5083 H116 Aluminum Sheet & Plate - Marine Grade, High-Strength Alloy
5083 marine aluminum plate 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.
5083 aluminum plate 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
5083-h116 and 5083-H321 aluminum plates have better corrosion resistance and are more suitable for the underwater environment of the ocean than H111 and H112 temper.
Although the temperature of 5083H116 and H321 aluminum sheets are slightly different in the production process, the corrosion resistance is significantly better than other tempers
Specification of 5083 Marine Aluminum Sheet
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 |
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 |
Compare 5083 H116 aluminum sheet and 5083 H321 aluminum plate. Both are marine-grade, high-strength alloys, but differ in temper and typical form. H116 offers superior corrosion resistance for sheet applications like hulls, while H321 provides a stabilized temper for thicker plate used in structural components.
Detailed Comparison & Guide:
| Feature | 5083 H116 Aluminum (Sheet) | 5083 H321 Aluminum (Plate) |
|---|---|---|
| Core Temper | H116: A special strain-hardened temper specifically for magnesium alloys (like 5083) to provide superior resistance to exfoliation and marine corrosion. | H321: Strain-hardened and then stabilized by a low-temperature thermal treatment. Designed to hold strength better at slightly elevated temperatures. |
| Typical Form | Primarily supplied as sheet (thinner gauges, typically under 1/4" or 6.35mm, but can go thicker). | Primarily supplied as plate (thicker gauges, typically 1/4" / 6mm and above). |
| Key Property | Excellent corrosion resistance, especially in saltwater environments. The H116 temper prevents the magnesium from forming harmful precipitates at grain boundaries. | Excellent weldability and good thermal stability. The stabilization offers good performance in welded structures and where brief exposure to higher temps may occur. |
| Primary Applications | Marine: Boat hulls, superstructures, gunwales. Transportation: Truck bodies, dump trailers, railcars. Pressure Vessels. |
Marine/Structural: Ship decks, bulkheads, offshore platforms, military vehicle armor. Welded structures requiring strength and stability. |
| When to Choose | Choose 5083 H116 sheet when your primary concern is maximum corrosion resistance for marine or chemical exposure applications, especially in thinner, formed sections. | Choose 5083 H321 plate when you need thicker, structural components that will be welded or require stability in environments with varying temperatures. |