Aluminum Square Tube

With great strength, weldability, and corrosion resistance, aluminum square tubes also offer unique characteristics, depending on their alloy, for various projects. 6061 aluminum square tube offers higher strength and structural performance, while 5053 aluminum square tube provides enhanced corrosion resistance and greater formability. Aluminum square tube is identified by its outside dimensions and wall thickness. For example, 1-1/2” x 1-1/2” x 0.125” describes a tube measuring 1-1/2” on each outside dimension with a 0.125” wall thickness. Competitive Metals is an aluminum square tube supplier with an inventory that features different sizes and specifications for both 6061 and 6063 alloys, in unpolished, raw-mill finishes.

If you have questions about which alloy is right for your project, contact Competitive Metals, and one of our representatives will be happy to assist you.

Differences Between 6061 and 6063 Aluminum Square Tubes

Each aluminum alloy has its own set of material properties, making one better suited to certain projects over the other. 6061 aluminum square tube offers rigidity, strength, and weldability, ideal for structural or load-bearing applications. Whereas 6063 aluminum square tube is more formable and corrosion-resistant, providing an architectural and aesthetic material option. Other distinctive material properties of 6061 and 6063 aluminum square tubes include:

Material Property	6061 Aluminum	6063 Aluminum
Strength	Higher. Commonly used where greater structural strength is required.	Lower than 6061. Well suited for lighter-duty and architectural applications
Fabrication & Workability	Good machinability, weldability, and general fabrication characteristics.	Excellent formability and extrudability; well suited for architectural shapes.
Corrosion Resistance	Very good corrosion resistance for most general applications.	Excellent corrosion resistance and commonly selected for exposed architectural applications.
Surface Finish	Standard mill finish; typically selected more for performance than appearance.	Typically provides a smoother surface finish and is commonly used where appearance is important.

Aluminum Square Tube Sizes and Specifications

Competitive Metals offers 6061 and 6063 aluminum square tubes in a range of dimensions, sizes, and wall thicknesses to meet the needs of your projects. Our in-stock selection includes the following dimensions:

6061 Aluminum Square Tube

1" x 1" x 0.065"
1" x 1" x 0.125"
1-1/2" x 1-1/2" x 0.065"
1-1/2" x 1-1/2" x 0.125"
2" x 2" x 0.125"

6061 aluminum square tube comes in standard mill lengths of 20’, with material sold in 5’, 10’, and 20’. 6063 aluminum square tube is available in standard mill lengths of 24’, with material sold in 6’, 12’, and 24’. Competitive Metals can saw-cut aluminum square tube to the length required for your project. Don’t see the size or wall thickness you need? Competitive Metals can source additional aluminum square tube sizes and specifications upon request. Contact our sales team for availability.

Applications of 6061 and 6063 Aluminum Square Tubes

6061 and 6063 aluminum square tubes offer lightweight, corrosion-resistant materials for various projects across industries. However, each alloy is best suited to a range of specific applications, including:

6061 Aluminum Square Tube

Structural frames and supports
Equipment frames and racks
Automotive and truck fabrication
Machine frames
Platforms and support structures
Fabricated and machined components

6063 Aluminum Square Tube

Architectural frames
Displays and retail fixtures
Enclosures
Furniture frames
Decorative fabrication
Interior and exterior architectural projects

Partner with Competitive Metals for a Reliable Aluminum Square Tube Supplier

Competitive Metals is a San Diego-based metal distributor with an extensive inventory that features metal materials in different sizes, shapes, and alloys, including aluminum products. Material is available for pickup, local delivery, or nationwide shipping. With a 50,000 sq. ft. facility and a fleet of delivery trucks, we are a trusted local aluminum square tube supplier to San Diego and the surrounding area, building a reputation for high-quality materials and fast, reliable service. We work with FedEx and nationwide LTL freight carriers to supply metal products to various businesses, hobbyists, and other end users throughout the United States. Find instructions on how to order, visit our resources for more information, or contact us to discuss your metal order; you can also request a quote to place your order today.