6061 Aluminum Flat Bars - 5/8 Inch X 6 Inch
6061-T6 Aluminum Flat Bar - 6" x 5/8" x 144"
This 6" x 5/8" 6061-T6 Aluminum Flat Bar is a high-strength, structural alloy specified to ASTM B211. Its T6 temper ensures a 45,000 PSI tensile strength, making it ideal for base plates, heavy structural supports, and machined parts requiring excellent corrosion resistance. In stock Los Angeles.
- 6061-T6 Aluminum Construction
- ASTM B211 Certified
- 45,000 PSI Tensile Strength
- Excellent Corrosion Resistance
6061-T6 aluminum is a precipitation-hardened alloy containing magnesium and silicon, offering a versatile combination of mechanical properties. The T6 temper indicates it has been solution heat-treated and artificially aged to its peak strength. Conforming to ASTM B211, it provides good machinability, excellent weldability, and superior corrosion resistance, making it one of the most widely used aluminum alloys for general-purpose structural and fabrication applications.
As a large-format bar, this 6" wide by 5/8" thick profile is ideal for applications requiring substantial surface area and rigidity. Its dimensions are perfectly suited for fabricating machinery base plates, heavy structural supports, die components, and large mounting brackets where a lightweight yet strong, flat, and stable material is essential for performance and longevity.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 6" Width x 5/8" Thickness x 144" Length
- Finish: T6 Temper, Mill Finish
- Certifications: Mill Test Report (MTR) Available
Applications
- Industrial Machinery: Base plates - provides a stable, corrosion-resistant foundation for heavy equipment.
- Structural Engineering: Support braces and gussets - high strength-to-weight ratio for robust framing.
- Aerospace & Automotive: Jigs and fixtures - dimensionally stable and easily machined for tooling.
- General Fabrication: Mounting blocks and manifolds - thick cross-section allows for drilling and tapping.
Target Users
Machinists, fabricators, and structural engineers rely on 6061-T6 flat bar for its reliable strength and workability in demanding applications throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish, which may have minor surface imperfections from the manufacturing process. For specific project requirements, 6061 aluminum can be easily anodized for enhanced durability and color, or powder coated for a protective finish. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Flat bar is measured by its Width (B) and Thickness (A). Use calipers or a tape measure to confirm the rectangular cross-section dimensions.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 6" width x 5/8" thickness x 144" length".
Order Checklist
- Product name and required dimensions (6" x 5/8" 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 Aluminum Flat Bars - 5/8 Inch X 6 Inch
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, Excellent Weldability, Excellent Corrosion Resistance
- Primary Applications
- Base plates, structural bracing, machined components
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061 Aluminum Flat Bar in widths from 1/2" to 6" and thicknesses from 1/8" to 2". This 6" x 5/8" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

