6061 Aluminum Flat Bars - 3 Inch X 4-3/8 Inch
6061-T6 Aluminum Flat Bar - 3" x 4-3/8"
This 3" x 4-3/8" 6061-T6 Aluminum Flat Bar is a versatile, heat-treatable structural alloy meeting ASTM B211 standards. It combines high strength (45,000 PSI tensile), good machinability, and excellent weldability, making it ideal for robust fabrication projects. In stock Los Angeles.
- 6061-T6 Aluminum Construction
- ASTM B211 Certified
- 45,000 PSI Tensile Strength
- Excellent Weldability & Corrosion Resistance
6061-T6 Aluminum Flat Bar is a precipitation-hardened alloy containing magnesium and silicon, making it one of the most widely used structural aluminums. The T6 temper indicates it has been solution heat-treated and artificially aged to achieve its optimal strength. Conforming to ASTM B211, it offers a versatile combination of high strength, excellent weldability, and superior corrosion resistance, suitable for a wide range of fabrication projects.
As a large-format bar, this 3" x 4-3/8" size provides substantial strength and rigidity. It is frequently used for fabricating heavy-duty equipment base plates, structural supports in machinery, die components, and load-bearing members in custom frames where lightweight performance and durability are critical requirements.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 3" Thickness x 4-3/8" Width x 144" Length
- Finish: T6 Temper (Solution Heat Treated & Artificially Aged)
- Certifications: MTR Available
Applications
- Heavy Equipment: Base plates - provides a stable, strong, and flat mounting surface for machinery.
- Structural Engineering: Support gussets and braces - high strength-to-weight ratio for load-bearing members.
- Tool & Die: Jigs, fixtures, and die components - good machinability for creating custom tooling.
- Marine Fabrication: Structural frames and supports - excellent corrosion resistance in marine environments.
Target Users
Machinists, fabricators, and structural engineers rely on 6061-T6 flat bar for its strength, workability, and corrosion resistance in industries throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish in the T6 temper condition, characterized by a smooth, unpolished surface. For specific project requirements, it can be anodized for enhanced surface hardness and color, or powder coated. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Flat bar is measured by its Thickness (the smaller dimension) and its Width (the larger dimension). Use calipers for an accurate measurement of the rectangular cross-section.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 3" x 4-3/8" x 144" length".
Order Checklist
- Product name and required dimensions (3" x 4-3/8" x 144")
- Material specification and quantity
- Confirm grade (6061-T6) meets requirements
- Surface finish requirements (T6 Temper)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- 6061-T6 Aluminum Flat Bar - 3" x 4-3/8"
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, Excellent Weldability, Good Machinability
- Primary Applications
- Base plates, structural supports, machine components
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061-T6 Aluminum Flat Bar in thicknesses from 1/8" to 3" and widths up to 6". This 3" x 4-3/8" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing