6061 Aluminum Flat Bars - 3/4 Inch X 1-1/4 Inch
6061 Aluminum Flat Bar - 3/4" X 1-1/4"
This 1-1/4" x 3/4" 6061-T6 aluminum flat bar provides an excellent strength-to-weight ratio and superior corrosion resistance. Certified to ASTM B211, it is heat-treatable and offers good machinability, making it a reliable choice for structural frames and custom machined parts. In stock Los Angeles.
- 6061-T6 Aluminum Construction
- ASTM B211 Certified
- 45,000 PSI Tensile Strength
- Excellent Weldability & Corrosion Resistance
6061-T6 is a precipitation-hardened aluminum alloy with magnesium and silicon as its primary elements. This grade is one of the most versatile heat-treatable alloys, offering a strong combination of mechanical properties, weldability, and corrosion resistance. Conforming to ASTM B211, the T6 temper indicates it has been solution heat-treated and artificially aged to achieve optimal strength.
As a medium-width bar, this 1-1/4" x 3/4" size is a fundamental component for structural and fabrication applications. It is frequently used for machine ways, support braces, base plates, mounting blocks, and transportation equipment where a strong, lightweight, and flat profile is required for assembly and machining.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 1-1/4" Width x 3/4" Thickness x 144" Length
- Finish: T6 Temper, Mill Finish
- Certifications: MTR Available
Applications
- Structural Framing: Bracing and support members - excellent strength-to-weight ratio for rigid assemblies.
- Machinery & Automation: Base plates and mounting blocks - good machinability for custom fixtures and parts.
- Transportation: Trailer and truck body components - lightweight and corrosion resistant for vehicle fabrication.
- General Fabrication: Wear strips and gussets - versatile profile for repairs and custom builds.
Target Users
Fabricators, machinists, and engineers rely on 6061-T6 flat bar for its versatile properties in structural and manufacturing applications throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish, reflecting the T6 temper condition. Its surface is suitable for most applications or can be prepared for further finishing. For specific project requirements, finishes such as anodizing or powder coating may be applied. 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 for an accurate measurement of the rectangular cross-section.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 1-1/4" wide x 3/4" thick x 144" length".
Order Checklist
- Product name and required dimensions (1-1/4" x 3/4" 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 - 3/4 Inch X 1-1/4 Inch
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, Excellent Weldability, Good Machinability
- Primary Applications
- Structural Bracing, Machined Parts, Base Plates
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061-T6 Aluminum Flat Bar in widths from 1/2" to 8" and thicknesses from 1/8" to 2". This 1-1/4" x 3/4" x 144" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

