Why Choose Marine Grade Aluminum 6061
In real-world marine applications, the benefits of marine-grade 6061 aluminum are highly significant. Its low density helps reduce the vessel's overall weight while increasing payload capacity. Additionally, its outstanding corrosion resistance ensures longer service life in harsh marine environments. This alloy also offers excellent weldability as well as favorable processing and forming characteristics.
GNEE supplies both 6061 aluminum profiles and 6061 aluminum sheets for shipbuilding. These materials feature excellent weldability, strong corrosion resistance, and easy formability. Along with superior electroplating properties, toughness, and stability-without deformation after processing-6061 aluminum is widely used in ship and tanker construction due to its compact and defect-free structure.
Different Types of 6061 Aluminum Alloys
6061 Aluminum Wide Plate
Standard international plate widths are 1000 mm, 1200 mm, and 1220 mm. Plates with widths above 1500 mm are categorized as wide plates. 6061 wide aluminum plates generally start at thicknesses above 1 mm.
6061 Aluminum Checker Plate
Available in various patterns such as one-bar, two-bar, three-bar, five-bar, compass, etc., this material has outstanding anti-slip performance and is commonly used for ship deck flooring.
6061 Aluminum Profile
GNEE provides a range of 6061 aluminum profiles, including T-shaped profiles, round tubes, and I-shaped profiles. While its strength is not as high as the 2xxx or 7xxx series, 6061 excels in weldability and maintains balanced mechanical performance, making it suitable for numerous structural uses.
Specifications of 6061 Marine Grade Aluminum
Chemical Composition (Wt%)
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Zr |
|---|---|---|---|---|---|---|---|---|---|
| 6061 | 0.40–0.80 | ≤0.70 | 0.15–0.40 | ≤0.15 | 0.80–1.20 | 0.04–0.35 | ≤0.25 | ≤0.15 | – |
Mechanical Properties
| Alloy | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|---|
| 6061 | T6 | ≥260 | ≥240 | ≥9 |
| 6061 | T651 | ≥290 | ≥240 | ≥9 |
Product Size Range
| Alloy | Temper | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|---|
| 6061 | F, O, T4, T6, T651 | 3–50 | 500–2800 | 500–16000 |
Applications of 6061 Aluminum
Sailboat Masts & Marine Components
With magnesium and silicon as key alloying elements, 6061 aluminum provides excellent machinability, corrosion resistance, high toughness, and stability after processing, making it ideal for masts and various marine accessories.
Catamaran Construction
Catamarans use two or more hulls connected horizontally. The lightweight, high-strength, and corrosion-resistant characteristics of 6061 aluminum profiles make them widely used in multi-hull vessel designs.
Ship Decking
As a crucial structural element, the deck requires reliable materials. 6061 aluminum checker plate provides excellent corrosion resistance, weather durability, and slip resistance, making it essential for marine deck fabrication.
Advantages of GNEE 6061 Marine Aluminum
High-capacity Production Line
GNEE's advanced "1+1 production line" significantly increases 6061 plate output, supporting large-scale and stable supply.
Certification and Quality Assurance
GNEE's 6061 aluminum products have obtained CCS, SGS, and ISO14000 certifications.
Advanced Stretching Process
A state-of-the-art 3000-ton stretching machine performs 1.0%–3.0% permanent stretch deformation to remove residual internal stress generated during quenching. This ensures that plates remain stable and do not deform during downstream processing.
Customers' Requirements for 6061 Aluminum
Tight thickness tolerances (typically positive tolerance).
Hardness must meet standards (HB ≥ 95).
Minimal deformation during processing.
Excellent flatness.
