6061 Aluminum Flat Bars - 3/8 Inch X 3-1/2 Inch
6061 Aluminum Flat Bars - 3/8 Inch X 3-1/2 Inch
This 3/8" x 3-1/2" 6061-T6 Aluminum Flat Bar provides a versatile combination of high strength, excellent corrosion resistance, and good machinability. Manufactured to ASTM B211 standards, it is a top choice for structural applications, from framing and brackets to base plates. 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, delivering a strong, lightweight, and versatile material. Conforming to ASTM B211, its T6 temper indicates it has been solution heat-treated and artificially aged to achieve optimal strength. This process results in excellent weldability, good machinability, and superior resistance to corrosion, making it one of the most widely used aluminum alloys.
With a substantial 3-1/2" width, this large-format flat bar is engineered for robust applications. It is commonly used for fabricating heavy-duty structural components, equipment base plates, support brackets, and die components where strength and rigidity are essential for performance and safety.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 3/8" Thickness x 3-1/2" Width x 144" Length
- Finish: T6 Temper, Mill Finish
- Certifications: Mill Test Report (MTR) Available
Applications
- Structural Fabrication: Base plates and support members - high strength-to-weight ratio for load-bearing parts.
- Machinery & Tooling: Jigs, fixtures, and die components - good machinability and dimensional stability.
- Marine & Automotive: Brackets and framing - excellent corrosion resistance in demanding environments.
- Architectural: Support structures and trim - clean mill finish and resistance to weathering.
Target Users
Fabricators, machinists, and structural engineers rely on 6061-T6 Flat Bar for its predictable performance and versatility in industrial and commercial projects throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish, typical of extruded aluminum profiles. For specific project requirements, finishes such as anodizing or powder coating can be applied for enhanced surface protection or aesthetics. 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). Use calipers for an accurate reading of both dimensions.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 3/8" thick by 3-1/2" wide".
Order Checklist
- Product name and required dimensions (3/8" x 3-1/2")
- Material specification and quantity
- Confirm grade (6061-T6) meets requirements
- Surface finish requirements (T6 Temper, Mill Finish)
- Certifications required (Mill Test Report)
- Special handling or delivery requirements
Quick Facts
- Product
- 6061 Aluminum Flat Bars - 3/8 Inch X 3-1/2 Inch
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, Excellent Workability, Excellent Corrosion Resistance
- Primary Applications
- Base plates, structural framing, machine 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 lengths up to 144". This 3/8" x 3-1/2" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

