6061 Aluminum Square Tube - 3 Inch X 0.125
6061-T6 Aluminum Square Tube - 3" x 3" x 0.125"
This 3" x 3" x 0.125" wall 6061-T6 Aluminum Square Tube is an extruded structural alloy known for its high strength-to-weight ratio. Conforming to ASTM B221, it provides 45,000 PSI tensile strength, excellent weldability, and corrosion resistance for demanding applications. In stock Los Angeles.
- 6061-T6 Aluminum Construction
- ASTM B221 Certified
- 45,000 PSI Tensile Strength
- Excellent Weldability & Corrosion Resistance
6061-T6 aluminum square tube is a versatile extruded product made from an alloy of magnesium and silicon. The T6 temper indicates it has been solution heat-treated and artificially aged, a process that significantly increases strength. It conforms to ASTM B221 standards, offering a combination of good machinability, excellent weldability, and superior corrosion resistance, making it a reliable structural material.
As a medium-sized 3" tube, this profile is perfectly suited for applications requiring significant structural integrity without excessive weight. Common uses include handrails, equipment frames, support columns, roll cages for vehicles, and custom fabrication projects where strength and durability are critical.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B221
- Strength/Tensile: 45,000 PSI
- Dimensions: 3" x 3" OD, 0.125" Wall, 144" Length
- Finish: T6 Temper (Mill Finish)
- Certifications: Mill Test Report (MTR) Available
Applications
- Structural Framing: Support trusses, machine frames, and workstations - Excellent strength-to-weight ratio.
- Automotive & Transportation: Roll cages, trailer frames, and roof racks - Lightweight and strong.
- Architectural Fabrication: Railing systems, support posts, and gate frames - High corrosion resistance and finishability.
- Marine Applications: Boat railings, T-tops, and structural marine hardware - Resists corrosion in saltwater environments.
Target Users
Fabricators, engineers, and construction professionals rely on 6061-T6 square tube for its reliable strength and versatility in structural applications throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish in the T6 temper condition, characterized by a smooth, semi-dull surface. For specific project requirements, 6061 aluminum is well-suited for anodizing, powder coating, or painting to enhance corrosion resistance or for aesthetic purposes. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Square tube is measured by its outer dimensions (A x B), wall thickness, and length. For a square tube, dimensions A and B will be identical. Use calipers for an accurate reading of the wall thickness.
Example: To order this square tube, specify "6061 Aluminum Square Tube, 3 inch x 3 inch with 0.125 inch wall x 144 inch length".
Order Checklist
- Product name and required dimensions (3" x 3" OD, 0.125" Wall, 144" L)
- Material specification and quantity
- Confirm grade (6061-T6) meets requirements
- Surface finish requirements (T6 Temper)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- 6061-T6 Aluminum Square Tube - 3" x 0.125"
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B221
- Key Properties
- 45,000 PSI tensile, Excellent Weldability, Excellent Corrosion Resistance
- Primary Applications
- Structural frames, handrails, roll cages
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061-T6 Aluminum Square Tube in sizes from 3/4" to 4" and lengths up to 288". This 3" x 3" x 0.125" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing