6061 Aluminum Flat Bars - 3 Inch X 6 Inch
6061-T6 Aluminum Flat Bar - 3" x 6"
This 3" x 6" 6061-T6 Aluminum Flat Bar provides a substantial cross-section for structural applications. Conforming to ASTM B211, it combines 45,000 PSI tensile strength with good workability and excellent corrosion resistance, making it ideal for base plates and machine frames. In stock Los Angeles.
- 6061-T6 Aluminum Construction
- ASTM B211 Certified
- 45,000 PSI Tensile Strength
- Excellent Weldability & Corrosion Resistance
6061-T6 aluminum is a precipitation-hardened alloy containing magnesium and silicon, offering a versatile mix of high strength, good corrosion resistance, and excellent weldability. This heat-treatable grade conforms to ASTM B211 standards and is one of the most widely used aluminum alloys for general fabrication. Its T6 temper indicates it has been solution heat-treated and artificially aged to achieve optimal strength properties.
As a large-format bar, the 3" x 6" cross-section provides exceptional rigidity and strength for demanding applications. It is ideal for manufacturing heavy-duty base plates for machinery, structural framing members, large jigs and fixtures, and robust die components where dimensional stability and a high strength-to-weight ratio are crucial.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 3" Thickness x 6" Width x 144" Length
- Finish: Mill Finish (T6 Temper)
- Certifications: Mill Test Report (MTR) Available
Applications
- Heavy Equipment: Base plates - provides a stable, strong, and lightweight foundation.
- Structural Engineering: Support beams and frames - high strength-to-weight ratio for industrial structures.
- Tool & Die: Jig and fixture bases - machinable and dimensionally stable for precision tooling.
- Marine Fabrication: Structural boat components - excellent corrosion resistance in marine environments.
Target Users
Fabricators, machinists, and structural engineers rely on 6061-T6 flat bar for its combination of strength and workability in industrial applications throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish, characteristic of the T6 temper condition. For specific project requirements, other finishes such as anodizing for enhanced surface protection or precision grinding may be available via special order. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Flat bar is measured by its Thickness (A) and its Width (B). Use calipers for an accurate measurement of the rectangular cross-section.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 3" thick x 6" wide x 144" length".
Order Checklist
- Product name and required dimensions (3" x 6" x 144")
- Material specification and quantity
- Confirm grade (6061-T6) meets requirements
- Surface finish requirements (Mill Finish)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- 6061-T6 Aluminum Flat Bar - 3" x 6"
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, good machinability, excellent weldability
- Primary Applications
- Base plates, structural frames, die components
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061-T6 Aluminum Flat Bar in widths from 1/2" to 12" and thicknesses from 1/8" to 4". This 3" x 6" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

