6061 Aluminum Flat Bars - 3/8 Inch X 5 Inch
6061-T6 Aluminum Flat Bar - 3/8 Inch X 5 Inch
This 3/8" x 5" 6061-T6 Aluminum Flat Bar delivers a versatile combination of high strength, good workability, and excellent corrosion resistance. Conforming to ASTM B211, it is ideal for structural framing, base plates, and machined components. In stock Los Angeles.
- 6061-T6 Aluminum Construction
- ASTM B211 Certified
- 45,000 PSI Tensile Strength
- Excellent Corrosion Resistance & Weldability
6061-T6 aluminum is a precipitation-hardened alloy containing magnesium and silicon, known for its high strength-to-weight ratio. The T6 temper indicates it has been solution heat-treated and artificially aged to achieve optimal mechanical properties, including 45,000 PSI tensile strength. Conforming to ASTM B211, this grade offers excellent weldability, machinability, and corrosion resistance, making it a go-to material for general fabrication.
As a large-format 5" wide bar, this material is exceptionally suited for robust structural applications. It is frequently used for machinery base plates, heavy-duty structural bracing, jig and fixture components, and support brackets where stiffness and strength are critical requirements for reliable performance.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 3/8" Thickness X 5" Width X 144" Length
- Finish: T6 Temper (Mill Finish)
- Certifications: MTR Available
Applications
- Structural Framing: Base plates and supports - high strength-to-weight ratio for load-bearing members.
- Machinery & Automation: Mounting blocks and jig components - excellent machinability for precise parts.
- Transportation: Trailer cross-members and frames - combines light weight with durability and corrosion resistance.
- Marine: Fittings and structural components - excellent resistance to saltwater environments.
Target Users
Machinists, structural fabricators, and engineers rely on 6061-T6 flat bar for its reliable strength and versatility in construction, aerospace, and marine industries throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish, characteristic of the T6 temper process. The surface is smooth and ready for machining or fabrication. For enhanced corrosion resistance or aesthetic requirements, 6061 aluminum can be easily anodized, 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 Width (B). Use calipers for an accurate measurement of the rectangular cross-section.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 3/8" x 5" x 144" length".
Order Checklist
- Product name and required dimensions (3/8" x 5" 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 - 3/8 Inch X 5 Inch
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, Excellent Machinability, Excellent Weldability
- Primary Applications
- Base plates, structural bracing, machined components
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061 Aluminum Flat Bar in widths from 1/2" to 8" and thicknesses from 1/8" to 2". This 3/8" x 5" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

