6061 Aluminum Flat Bars - 3 Inch X 4 Inch
6061 Aluminum Flat Bars - 3 Inch X 4 Inch
This 4" x 3" 6061-T6 aluminum flat bar offers a high strength-to-weight ratio for structural applications. Conforming to ASTM B211, its combination of 45,000 PSI tensile strength, good machinability, and weldability makes it ideal for heavy components. 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, known for its excellent mechanical properties and weldability. Conforming to ASTM B211, this material provides a versatile combination of high strength, good workability, and superior corrosion resistance. The T6 temper indicates it has been solution heat-treated and artificially aged to achieve its optimal strength, making it one of the most widely used aluminum alloys.
As a large-format flat bar, this 4" x 3" stock is engineered for heavy-duty use. Its substantial cross-section is ideal for creating robust equipment base plates, structural support beams, die components, and large-scale machined fixtures where strength and stability are critical design requirements. Its flat, consistent surfaces are ready for milling, drilling, and welding.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 4" Width x 3" Thickness x 144" Length
- Finish: T6 (Solution heat-treated, artificially aged)
- Certifications: Mill Test Report (MTR) Available
Applications
- Industrial Machinery: Base plates - large, flat surface provides stable mounting for heavy equipment.
- Structural Engineering: Support beams and frames - high strength-to-weight ratio for load-bearing applications.
- Tool & Die: Jigs and fixtures - dimensionally stable and easily machined into complex shapes.
- Fabrication: Gussets and brackets - excellent weldability for reinforcing large structural joints.
Target Users
Machinists, fabricators, and structural engineers rely on 6061-T6 aluminum flat bar for its strength and reliability in industrial and construction projects throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish, characteristic of the extrusion process. For applications requiring enhanced corrosion resistance or a specific aesthetic, finishes such as anodizing or powder coating are common. Contact our Los Angeles sales team for custom finish inquiries or secondary processing options.
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, 4 inches wide by 3 inches thick".
Order Checklist
- Product name and required dimensions (4" x 3" 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 Inch
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, good machinability, excellent corrosion resistance
- 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 widths from 1/2" to 6" and thicknesses from 1/8" to 3". This 4" x 3" x 144" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing