6" x 4" Aluminum Structural I-Beam – 6061-T6 – Ideal for Boat Docks & Boat Hoists
Heavy-Duty Marine Grade Structural Support
Whether you're building a new boat dock, upgrading a boat hoist, or constructing a waterfront platform, this 6061-T6 Aluminum Structural I-Beam delivers the strength, corrosion resistance, and durability needed for demanding marine environments.
Manufactured from high-strength 6061-T6 aluminum, this structural beam offers an excellent strength-to-weight ratio while resisting rust and corrosion commonly associated with freshwater and saltwater applications.
Product Specifications
| Specification | Details |
|---|---|
| Material | Aluminum |
| Type | Structural I-Beam |
| Alloy | 6061 |
| Temper | T6 |
| Beam Size | 6" x 4" |
| Flange Thickness | 0.350" |
| Web Thickness | 0.210" |
| Weight | 4.70 lbs. per linear foot |
| Length | 12-1/2 ft. |
| Finish | Mill Finish Aluminum |
Common Applications
✔ Boat Dock Construction
✔ Boat Lift & Boat Hoist Framework
✔ Waterfront Platforms
✔ Marina Structures
✔ Catwalks & Walkways
✔ Marine Equipment Supports
✔ Structural Bracing & Framing
✔ Custom Fabrication Projects
Why Choose 6061-T6 Aluminum?
- Excellent corrosion resistance in marine environments
- High structural strength with reduced weight compared to steel
- Easy to machine, weld, and fabricate
- Naturally rust-resistant
- Long service life with minimal maintenance
- Ideal for freshwater and coastal applications
Built for the Waterfront
This structural aluminum I-beam is a popular choice among dock builders, marine contractors, waterfront property owners, and boat lift manufacturers. Its lightweight design makes installation easier while still providing the structural integrity needed for heavy-duty marine applications.
Whether you're supporting a boat hoist, extending a dock, or building a custom marine structure, this beam is engineered to perform where strength and corrosion resistance matter most.
Sold individually.
Need multiple beams or a custom dock package? Contact us for bulk pricing and freight quotes.
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