5083 H116 Aluminum Sheet Vs. 5086 h321 Aluminum Plate

2026-01-25News

5083 H116 aluminum sheet and 5083 H321 aluminum plate are both strong, marine-grade alloys. However, they differ in temper and shape. H116 has great corrosion resistance for sheet applications, such as hulls. H321 offers a stable temper for thicker plates used in structural parts.

5083 H116 aluminum sheet and plate offer excellent corrosion resistance, especially in marine and saline environments. It is strong, easy to weld, and durable. This makes it popular for boat hulls, offshore structures, transportation equipment, and industrial uses. Available in various thicknesses and sizes.

5083 H116 aluminum sheet manufacturer

5083-H116 aluminum sheet is a strong alloy with a lot of magnesium. It does not need heat treatment. This alloy is known for its great resistance to corrosion, especially in seawater. It also has high strength and is easy to weld. It is a top-quality marine-grade material (ASTM B928). It is often used for ship hulls, decks, fuel tanks, and cryogenic applications. This material usually comes in thicknesses from 1/8 to 2 inches.

Comparison & Guide choosing 5083 H116 / H321 Aluminum sheet:

Feature	5083 H116 Aluminum (Sheet)	5083 H321 Aluminum (Plate)
Core Temper	H116: This is a special strain-hardened temper made for magnesium alloys, like 5083. It offers great 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 you need maximum corrosion resistance. This is important for marine or chemical exposure applications, especially in thinner, formed sections.	Choose 5083 H321 plate when you need thicker, structural parts that will be welded or need stability in changing temperatures.

The 5083 aluminum alloy, renowned for its exceptional marine-grade corrosion resistance, high strength, and excellent weldability. The 5083 H116 aluminum sheet is a strong material. It is made to resist exfoliation and saltwater corrosion. This makes it a top choice for boat hulls, superstructures, and transport uses. It is ideal for tough environments where durability is important.

The 5083 H321 aluminum plate undergoes a stabilizing thermal treatment, offering enhanced thermal stability for welded structures and applications with variable temperatures. It is primarily supplied as thicker plate for structural components like ship decks, offshore platforms, and military vehicle armor. Choosing between them depends on your needs. If you need maximum corrosion resistance in sheet form, choose H116. If you need strong, thick welded plate sections, go for H321.

5083 Aluminum Sheet Dimensions

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

Previous post 5005 Aluminum Sheet Vs 5052 Aluminum Plate

Blog

5083 H116 Aluminum Sheet Vs. 5086 h321 Aluminum Plate

Comparison & Guide choosing 5083 H116 / H321 Aluminum sheet:

Leave a Reply Cancel reply