Aluminum square tubing provides lightweight strength for framing, architectural projects, and DIY builds. This article highlights top square tube stock options in 6063-T52 alloy, known for corrosion resistance and good formability. We compare common sizes from 2″ x 2″ to 4″ x 4″ with 1/8″ wall, plus versatile 1″ and 1-1/4″ profiles. Each product showcases compatibility with machining, welding, and modular framing systems. Use this guide to identify the best aluminum square tubing for your next fabrication project.
| Product | Size / Wall | Length | |
|---|---|---|---|
| OnlineMetals 2″ x 2″ Square | 2″ x 2″, 1/8″ | 36″ | Premium 6063-T52, mill finish |
| OnlineMetals 1-1/4″ x 1-1/4″ | 1.25″ x 1.25″, 1/8″ | 36″ | Easy to fabricate, structural use |
| OnlineMetals 4″ x 4″ | 4″ x 4″, 1/8″ | 12″ | Architectural strength and corrosion resistance |
| EZTube 1″ x 1″ | 1″ x 1″, notched | 94″ | Aerospace-grade 6063-T5, quick-connect |
| Gisafai 1″ OD Tubes | ~1″ OD, 0.12″ wall | 24″ | Includes 2 pieces, versatile DIY use |
These selections cover common commercial sizes used in framing, machinery guards, furniture, and railing systems. They’re suitable for projects ranging from hobby builds to shop fixtures. The common thread across these options is the combination of corrosion resistance, weldability, and ease of fabrication that aluminum provides. The following sections highlight five representative products with quick-access links and practical details to help you compare at a glance.
OnlineMetals 2″ x 2″ Aluminum Square Tubing, 36″ Length
6063-T52 aluminum square tubing with a 2″ x 2″ cross-section and 1/8″ wall thickness offers notable stiffness for framing and architectural projects. The stock arrives with a clean mill finish, ready for machining, welding, drilling, or cutting. Its corrosion resistance makes it suitable for indoor and outdoor uses, including railing systems and structural supports. This size is a common choice for DIY frames and modular framing systems, delivering reliable performance without excessive weight.
OnlineMetals 1-1/4″ Square Tubing, 36″ Length
This 1-1/4″ x 1-1/4″ aluminum square tube shares the 6063-T52 alloy and ASTM B221 compliance, with a 1/8″ wall and 36″ length. It is designed for frames, cages, and structural supports. The mill finish supports straightforward fabrication, including welding and bending. It pairs well with 80/20 style framing systems and versatile square metal tubing designs, offering a balanced combination of strength, ease of fabrication, and modular compatibility.
OnlineMetals 4″ x 4″ Aluminum Square Tubing, 12″ Length
A larger square tube option, the 4″ x 4″ profile provides higher stiffness for load-bearing frames and architectural features. The 1/8″ wall thickness ensures a solid feel while remaining lighter than equivalent steel members. It is corrosion resistant and suitable for indoor and outdoor projects. While dimensionally bigger, it remains compatible with common fabrication methods and can form the backbone of robust framing systems and structural elements in design-build applications.
EZTube 1″ x 1″ Aluminum Square Tubing, 94″ Length
EZTube offers aerospace-grade 6063-T5 aluminum with a 1″ x 1″ square profile and a 94″ length. This option emphasizes quick-connect, tool-free assembly, and precise tolerances for secure connections. It is well suited for modular frames, linear guide systems, and DIY projects requiring fast, repeatable assembly. The product supports American manufacturing and provides dedicated customer service for frame-building needs.
Gisafai 2 Pcs 1″ Aluminum Square Tubing, 24″ Length
These 1″ OD aluminum tubes are 0.12″ wall, 24″ long, crafted from 6061 alloy for durability and corrosion resistance. The two-piece package suits multiple DIY projects, enabling welding or cutting to fit custom designs. The silver finish provides a clean aesthetic for furniture, frames, and machine housings. While 6061 differs from 6063 in some properties, both are widely used for structural aluminum tubing and offer strong, versatile performance.
Forney 49250 Square Aluminum Tubing, 3/4″ x 3/4″
Forney 6063-T5 aluminum square tubing is suitable for light to medium-duty projects and is weldable with typical aluminum MIG or TIG processes. Its 3/4″ x 3/4″ cross-section offers compact framing options and is ideal for small fixtures, machine guards, and decorative structures. This size complements larger frames and provides flexibility in assembling mixed-sized structures.
Buying Guide: Key Considerations When Selecting Aluminum Square Tubing
- Alloy and temper: 6063-T52 is common for architectural and structural use, offering good corrosion resistance and formability. 6063-T5 offers a balance of strength and ease of fabrication. Consider the harshness of the environment and required strength.
- Wall thickness and weight: Thicker walls increase stiffness and load capacity but add weight. Common options include 1/8″ walls for many framing projects.
- Size and compatibility: Choose profiles that fit existing framing systems or standard mounting patterns. Larger profiles deliver rigidity but require appropriate joints and fasteners.
- Finish and fabrication readiness: A mill finish streamlines machining, welding, drilling, and bending. Powder-coated or anodized finishes may be needed for outdoor use or specific aesthetics.
- Length and sourcing: Longer lengths reduce seams in large frames, but may require on-site cutting. Consider supplier availability, lead times, and expansion considerations for DIY vs. industrial builds.
- Cost vs. performance: Weigh the benefits of lighter weight against required strength. Aluminum offers corrosion resistance and ease of handling but can be more expensive than some alternatives.
- Modular compatibility: For projects using modular framing or 80/20-style systems, verify connector compatibility and joint tolerances to ensure smooth assembly.
When selecting aluminum square tubing, assess the project’s structural needs, environment, and fabrication capabilities. These options provide a spectrum from compact 3/4″ profiles to larger 4″ frames, with different alloys and tempering that influence strength and weldability. Always verify exact dimensions, wall thickness, and length availability with the supplier before purchasing to ensure a precise fit for your build.