High Strength 5000 Series 5083 Aluminum Marine Plate Aluminium 5083 Sheet

5083 aluminum sheet belongs to Al-Mg series alloy. It is the highest strength corrosion-resistant

alloy among practical non-heat-treated alloys. And it is suitable for welding structures. Also, it is

worth mentioning that 5083 aluminum sheet has good resistance to seawater and low-temperature characteristics.

Key Properties of 5083 Aluminum Alloy

5083 aluminum alloy is a non-heat-treatable Al-Mg series alloy with exceptional marine-grade

characteristics:

♦ High Strength & Toughness

Tensile strength: 275-350 MPa (varies by temper, e.g., H116/H321)

Yield strength: ≥125 MPa (O temper) to ≥215 MPa (H116)

Excellent impact/fatigue resistance for dynamic loads (e.g., wave impacts)

♦ Superior Corrosion Resistance

High Mg content (4.0-4.9%) provides industry-leading seawater corrosion resistance

Resists stress corrosion cracking (SCC) in long-term marine exposure

♦ Outstanding Weldability

Compatible with MIG/TIG/FSW (friction stir welding)

As-welded joint strength retains >90% of base material

No post-weld heat treatment required

♦ Lightweight Advantage

Density: 2.66 g/cm³ (~65% lighter than steel) reduces vessel fuel consumption

♦ Cryogenic Performance

Maintains toughness in Arctic conditions (-196°C) without brittle fracture

Thickness Guidelines for Marine Plate

Material Selection & Processing Notes

Temper Selection:

H116/H321: Standard for optimized strength/corrosion resistance

O temper: For complex cold-formed shapes

Corrosion Protection:

Combine with sacrificial anodes or epoxy coatings

Welding:

Use 5356/5183 filler wires for best performance

Comparison with Other Marine Alloys

5052: Lower strength (interior/cost-sensitive uses)

6061: Heat-treatable but inferior seawater resistance

5083 dominates marine engineering due to its unmatched balance of corrosion resistance, strength,

and weldability, making it ideal for safety-critical maritime structures.

We own the World-advanced Equipments

Qingdao Jero steel company is a professional raw material integrated supplier, located in the beautiful costal city, Qingdao,

mainly product is steel material and Aluminum alloy sheet/coil.

We own a very comfortable work environment, and humanized management system, we hope that a job can not only bring

salary, ability, friendship, experience, but also bring happiness, passion, and the sense of achievement.

• We guarantee the product quality by our inspection team, professional equipment, that is the key point for getting a stable

 and sustainable development.

• We have strictly constraint for every step, such as production, package, inspection, delivery etc.

• Besides, we have excellent sales team, each member have over 4 years raw material export experience, they can judge the

 market changes to a certain extent and provide some reasonable advice for customers.

A stable customer can bring us good reputation and constantly economic benefit. For the past years, relying on a perfect quality

management system and a rigorous service attitude, we get a trusted brand image in the minds of customers.