6061 Aluminum Flat Bars - 3/8 Inch X 4-1/2 Inch
6061-T6 Aluminum Flat Bar - 4-1/2" x 3/8" x 144"
This 4-1/2" x 3/8" 6061-T6 Aluminum Flat Bar is a versatile, heat-treatable grade specified to ASTM B211. It combines high strength (45,000 PSI tensile), excellent weldability, and corrosion resistance, making it a top choice for structural applications like base plates and heavy bracing. 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. This grade is heat-treated and artificially aged to the T6 temper, achieving optimal strength while maintaining good formability and excellent weldability. Conforming to ASTM B211, it is one of the most widely used aluminum alloys for its robust mechanical properties and superior resistance to corrosion.
As a large-format bar, its 4-1/2" width provides substantial surface area and structural integrity. This size is ideal for manufacturing heavy-duty components such as machine base plates, die components, structural support members, and mounting blocks where stability and strength are critical requirements for the assembly.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 4-1/2" Width x 3/8" Thickness x 144" Length
- Finish: T6 Temper, Mill Finish
- Certifications: MTR Available
Applications
- Structural Engineering: Base plates - The wide 4-1/2" profile distributes loads effectively for machinery and equipment.
- Automotive & Transport: Trailer frames and crossmembers - High strength-to-weight ratio reduces vehicle weight without sacrificing durability.
- Marine: Boat lifts and structural fittings - Excellent corrosion resistance provides longevity in wet environments.
- General Fabrication: Heavy brackets and gussets - Easily cut, drilled, and welded for custom support structures.
Target Users
Fabricators, machinists, 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 mill finish characteristic of the T6 temper process. It is ready for fabrication but can be further processed. For specific project requirements, finishes such as anodizing or powder coating can be applied for enhanced durability or aesthetics. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Flat bar is measured by its Width (A) and Thickness (B). Use calipers for an accurate reading of the rectangular cross-section.
Example: To order this flat bar, specify "6061 Aluminum Flat Bar, 4-1/2" wide by 3/8" thick".
Order Checklist
- Product name and required dimensions (4-1/2" x 3/8" x 144")
- 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-T6 Aluminum Flat Bar - 4-1/2" x 3/8"
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, Excellent Weldability, Good Machinability
- Primary Applications
- Base plates, structural bracing, marine components
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061-T6 Aluminum Flat Bar in widths from 1/2" to 12" and thicknesses from 1/8" to 4". This 4-1/2" x 3/8" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing