6061 Aluminum Flat Bars - 5/8 Inch X 1-1/4 Inch
6061-T6 Aluminum Flat Bar - 5/8" x 1-1/4" x 144"
This 5/8" x 1-1/4" 6061-T6 aluminum flat bar provides a versatile combination of high strength and workability. Conforming to ASTM B211, it features 45,000 PSI tensile strength, good machinability, and excellent corrosion resistance, making it ideal for structural and fabrication projects. In stock Los Angeles.
- 6061-T6 Aluminum Construction
- ASTM B211 Certified
- 45,000 PSI Tensile Strength
- Excellent Machinability & Weldability
6061-T6 aluminum is a precipitation-hardened alloy containing magnesium and silicon, solution heat-treated and artificially aged for optimal strength. This process results in a material that conforms to ASTM B211 and offers excellent weldability, good machinability, and high resistance to corrosion. The flat bar form provides a solid, rectangular cross-section ideal for general-purpose structural and fabrication applications.
As a medium-width bar, this 1-1/4" x 5/8" size is perfectly suited for manufacturing structural bracing, support brackets, machine ways, base plates, and wear strips where a balance of strength and compact profile is required.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 5/8" Thickness x 1-1/4" Width x 144" Length
- Finish: T6 Temper Mill Finish
- Certifications: Mill Test Report (MTR) Available
Applications
- Structural Fabrication: Bracing and support members - high strength-to-weight ratio for frames and chassis.
- Machinery: Custom brackets and mounting plates - good machinability for precise components.
- Transportation: Trailer components and frames - lightweight and corrosion-resistant for vehicle bodies.
- Architectural: Door sills and support trim - clean finish and resistance to atmospheric corrosion.
Target Users
Fabricators, machinists, and structural engineers rely on 6061-T6 flat bar for its versatile performance in manufacturing and construction projects throughout the Los Angeles area.
Finish Options
This product comes standard with a T6 temper mill finish, which may have minor surface variations. For specific project requirements, finishes such as anodizing, powder coating, or polishing can be applied after purchase. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Flat bar is measured by its Width (A) and Thickness (B). Use calipers or a tape measure to determine the dimensions of the rectangular cross-section.
Example: To order this flat bar, specify "6061-T6 Aluminum Flat Bar, 1-1/4" wide by 5/8" thick".
Order Checklist
- Product name and required dimensions (1-1/4" x 5/8" x 144")
- Material specification and quantity
- Confirm grade (6061-T6) meets requirements
- Surface finish requirements (T6 Mill Finish)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- 6061 Aluminum Flat Bars - 5/8 Inch X 1-1/4 Inch
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, good machinability, excellent weldability
- Primary Applications
- Structural bracing, machine ways, wear strips
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061-T6 Aluminum Flat Bar in widths from 1/2" to 6" and thicknesses from 1/8" to 2". This 1-1/4" x 5/8" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

