6061 Aluminum Flat Bars - 3 Inch X 4-1/2 Inch
6061-T6 Aluminum Flat Bar - 3" x 4-1/2" x 144"
This 3" x 4-1/2" 6061-T6 aluminum flat bar provides a robust, large-format solution for structural applications. Certified to ASTM B211, it features high strength, excellent corrosion resistance, and good machinability, making it ideal for base plates and heavy fabrication. 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 heat-treatable, precipitation-hardened alloy containing magnesium and silicon. This grade delivers a versatile blend of high strength, excellent corrosion resistance, and good workability, conforming to ASTM B211 specifications. Its T6 temper signifies it has been solution heat-treated and artificially aged to achieve optimal mechanical properties, including excellent weldability for strong, durable joints in fabricated assemblies.
As a large-format bar, this 3" x 4-1/2" piece is engineered for heavy-duty applications. Its substantial cross-section makes it the ideal starting stock for large machine base plates, heavy structural supports, die components, and any application requiring a strong, stable, and lightweight material that can be easily machined to precise dimensions.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 3" Thickness x 4-1/2" Width x 144" Length
- Finish: T6 Temper, Mill Finish
- Certifications: Mill Test Report (MTR) Available
Applications
- Heavy Equipment: Base plates & mounting blocks - the large width provides a stable foundation for machinery.
- Structural Engineering: Gussets & support members - its high strength-to-weight ratio is ideal for load-bearing applications.
- Tool & Die: Jigs, fixtures & die components - easily machined to precise tolerances for manufacturing tools.
- Marine Fabrication: Structural frames & supports - excellent corrosion resistance for saltwater environments.
Target Users
Machinists, fabricators, and structural engineers rely on 6061-T6 flat bar for its strength and versatility in industrial and construction projects throughout the Los Angeles area.
Finish Options
This product comes standard with a smooth mill finish in the T6 temper condition, suitable for most industrial applications. 6061 aluminum can be easily anodized for enhanced corrosion resistance and color, powder coated, or polished. 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). Ensure measurements are taken from the flat faces, not the corners.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 3" x 4-1/2" x 144" length".
Order Checklist
- Product name and required dimensions (3" x 4-1/2" 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 - 3 Inch X 4-1/2 Inch
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, good machinability, excellent corrosion resistance
- Primary Applications
- Base plates, structural supports, die components
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061 Aluminum Flat Bar in thicknesses from 1/8" to 3" and widths from 1/2" to 6". This 3" x 4-1/2" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing