6061 Aluminum Flat Bars - 3 Inch X 5 Inch
6061 Aluminum Flat Bars - 3 Inch X 5 Inch
This 5" x 3" 6061-T6 Aluminum Flat Bar provides a high strength-to-weight ratio for demanding structural jobs. Conforming to ASTM B211, it combines 45,000 PSI tensile strength with good machinability and excellent corrosion resistance, making it ideal for large machined parts. 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, known for its versatile mechanical properties. This heat-treated grade conforms to ASTM B211 and offers a reliable combination of high strength, excellent corrosion resistance, and good weldability. Its rectangular profile with sharp corners ensures consistent dimensions for fabrication and precision machining operations.
As a large-format bar, this 5" x 3" size is specified for heavy-duty applications. It is commonly used for manufacturing structural base plates, mounting blocks for industrial machinery, large jigs and fixtures, and robust framework components where stability and strength are critical.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 5" Width x 3" Thickness x 144" Length
- Finish: T6 Temper (Solution heat-treated, artificially aged)
- Certifications: MTR Available
Applications
- Heavy Structural: Base plates for columns and machinery - provides a stable, strong foundation.
- Industrial Machinery: Die components and mounting blocks - excellent machinability and dimensional stability.
- Tooling & Jigs: Large fixture bases - resists deformation under load.
- General Fabrication: Heavy bracing and support members - high strength-to-weight ratio for robust assemblies.
Target Users
Machinists, structural fabricators, and engineers rely on 6061-T6 Flat Bar for its versatility and strength in industrial and architectural projects throughout the Los Angeles area.
Finish Options
This product comes standard with a T6 temper mill finish, which may have some surface imperfections. For projects requiring enhanced corrosion resistance or a specific color, 6061 aluminum is an excellent candidate for anodizing or powder coating. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Flat bar is measured by its Width (B), Thickness (A), and overall Length. Use calipers for precise width and thickness measurements.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 5" wide x 3" thick x 144" long".
Order Checklist
- Product name and required dimensions (5" x 3" x 144")
- Material specification and quantity
- Confirm grade (6061-T6) meets requirements
- Surface finish requirements (T6 Temper Mill Finish)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- 6061 Aluminum Flat Bars - 3 Inch X 5 Inch
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, Excellent Weldability, Good Machinability
- Primary Applications
- Base plates, heavy structural, die components
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061 Aluminum Flat Bar in a wide range of sizes, including widths from 1/2" to 6" and various thicknesses. This 5" x 3" x 144" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

