Aluminum alloys are widely used in engineering, construction, transportation, and marine industries due to their strength-to-weight ratio, corrosion resistance, and workability. Among the most commonly used aluminum grades are AW 6082 and 5754. Although both are part of the wrought aluminum alloy family, they differ in chemical composition, mechanical properties, and ideal applications.
This article explores the key differences between AW 6082 and 5754 aluminum, helping engineers, designers, and buyers make informed material selections for their projects.
What Is AW 6082?
AW 6082, also known as EN AW-6082, belongs to the 6000 series aluminum alloys, which are aluminum-magnesium-silicon alloys. It is known for its high strength, excellent corrosion resistance, and good machinability. It is often chosen as a structural alloy and is widely used in transportation and construction.
Key Features:
-
Medium to high strength
-
Good corrosion resistance
-
Excellent weldability
-
Heat treatable (can be supplied in T6 or T651 temper)
What Is 5754 Aluminum?
5754 aluminum is part of the 5000 series, which are aluminum-magnesium alloys. It offers superior corrosion resistance, especially in marine and industrial environments. It is not heat treatable but gains strength through cold working.
Key Features:
-
Medium strength
-
Outstanding corrosion resistance, especially to seawater
-
Excellent weldability
-
Good formability
Chemical Composition Comparison
| Element | AW 6082 (%) | 5754 (%) |
|---|---|---|
| Aluminum (Al) | Balance | Balance |
| Magnesium (Mg) | 0.6 – 1.2 | 2.6 – 3.6 |
| Silicon (Si) | 0.7 – 1.3 | ≤ 0.4 |
| Manganese (Mn) | 0.4 – 1.0 | ≤ 0.5 |
| Iron (Fe) | ≤ 0.5 | ≤ 0.4 |
| Chromium (Cr) | ≤ 0.25 | 0.15 – 0.35 |
Summary:
-
5754 contains more magnesium, giving it better corrosion resistance.
-
6082 has higher silicon and manganese, enhancing strength and machinability.
Mechanical Properties
| Property | AW 6082 (T6) | 5754 (H111) |
|---|---|---|
| Tensile Strength (MPa) | 290 – 330 | 190 – 240 |
| Yield Strength (MPa) | 240 – 280 | 80 – 120 |
| Elongation (%) | 8 – 12 | 12 – 20 |
| Hardness (Brinell) | 90 – 100 | 60 – 70 |
Interpretation:
-
AW 6082 has significantly higher strength, making it better suited for load-bearing applications.
-
5754 has greater ductility and better formability, ideal for deep drawing and bending.
Corrosion Resistance
-
5754 aluminum is superior in corrosion resistance, especially against saltwater, making it a preferred choice in marine applications.
-
AW 6082 also has good corrosion resistance but is less suitable than 5754 for environments with constant salt or moisture exposure.
Weldability and Machinability
Weldability:
-
Both alloys have excellent weldability, but 5754 is slightly better for welding due to lower silicon content, reducing the risk of cracking.
Machinability:
-
AW 6082 is easier to machine due to its higher strength and silicon content, making it suitable for precision components and milled parts.
-
5754 is harder to machine and more prone to galling.
Heat Treatment and Workability
-
AW 6082 is heat-treatable, meaning it can be strengthened via artificial aging (T6 condition).
-
5754 is non-heat-treatable, but its strength can be improved through cold working (H111, H22 tempers).
Surface Finish and Appearance
-
Both alloys respond well to anodizing, which improves corrosion resistance and aesthetic finish.
-
5754 is often used in textured or tread plate form for flooring due to its formability.
-
6082 is commonly used in extrusions, bars, and machined components that require tight tolerances.
Typical Applications
AW 6082:
-
Structural components
-
Bridges and trusses
-
Rail cars and trucks
-
Scaffolding systems
-
Aerospace fittings
-
CNC machined parts
5754:
-
Marine hulls and components
-
Pressure vessels and storage tanks
-
Automotive panels and fuel tanks
-
Food processing equipment
-
Building facades
-
Road signs and transportation panels
Summary Table: AW 6082 vs 5754
| Property | AW 6082 | 5754 |
|---|---|---|
| Alloy Series | 6000 | 5000 |
| Strength | Higher | Medium |
| Corrosion Resistance | Good | Excellent |
| Heat Treatable | Yes (T6, T651) | No |
| Formability | Moderate | Excellent |
| Machinability | Excellent | Fair |
| Marine Use | Good | Best |
| Weldability | Excellent | Excellent |
Which One Should You Choose?
| Requirement | Recommended Alloy |
|---|---|
| High strength | AW 6082 |
| Saltwater exposure | 5754 |
| Complex forming | 5754 |
| Machined parts | AW 6082 |
| Lightweight structures | AW 6082 |
| Non-structural panels | 5754 |
Trusted Supplier of Aluminum Alloys – sasaaluminum
At sasaaluminum, we provide top-quality aluminum alloy products tailored to the needs of diverse industries. Whether you’re building marine vessels, architectural frames, or automotive components, we deliver:
-
AW 6082 and 5754 plates, sheets, bars, tubes
-
Custom-cut lengths and CNC machining services
-
Global shipping with full material certifications
-
Expert technical guidance and alloy selection support
When performance matters, sasaaluminum ensures reliability, consistency, and compliance with international standards.
Conclusion
So, what is the difference between AW 6082 and 5754?
In summary:
-
AW 6082 offers higher strength and is heat treatable, making it suitable for structural and machined applications.
-
5754 provides superior corrosion resistance, better formability, and is ideal for marine and industrial uses.
Understanding the differences between these alloys ensures you choose the right material for your project’s requirements. For top-quality aluminum materials and reliable service, trust sasaaluminum to be your partner in performance.
Post time: Aug-05-2025