6061 Aluminum Rounds - 3-3/4 Inches
6061-T6 Aluminum Round Bar - 3-3/4" x 144"
This 3-3/4" diameter 6061-T6 Aluminum Round Bar delivers a superior combination of strength, machinability, and corrosion resistance. Certified to ASTM B211, it features a 45,000 PSI tensile strength, making it ideal for large-scale structural and machined applications. In stock Los Angeles.
- 6061-T6 Aluminum Construction
- ASTM B211 Certified
- 45,000 PSI Tensile Strength
- Excellent Machinability & Weldability
6061-T6 aluminum is a precipitation-hardened alloy containing magnesium and silicon, solution heat-treated and artificially aged to achieve its impressive strength-to-weight ratio. This process results in a material with good machinability, excellent welding characteristics, and superior corrosion resistance. Conforming to ASTM B211 standards, it provides reliable and consistent performance for demanding industrial applications.
As a large-diameter bar, this 3-3/4" round is particularly suited for fabricating heavy-duty shafts, large machined components, forging stock for custom parts, and industrial rollers where strength and dimensional stability under load are critical requirements.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 3-3/4" diameter x 144" length
- Finish: T6 Temper, Mill Finish
- Certifications: MTR Available
Applications
- Industrial Machinery: Heavy-duty shafts, rollers, and large machined parts - High strength and stability for heavy loads.
- Structural Fabrication: Base plates and load-bearing supports - Excellent strength-to-weight ratio.
- Aerospace & Defense: Forging stock for large fittings and structural components - Reliable and lightweight.
- Marine: Large boat fittings and structural frames - Superior corrosion resistance in marine environments.
Target Users
Machinists, fabricators, and engineers rely on 6061-T6 large-diameter round bar for its consistent performance and versatility in demanding structural and mechanical applications throughout the Los Angeles area.
Finish Options
This product comes standard with a mill finish in the T6 temper condition. 6061 aluminum is an excellent candidate for finishing; other options such as polishing or anodizing for enhanced surface hardness and color may be available via special order. Contact our Los Angeles sales team for custom finish inquiries.
How to Measure
Round bar is measured by its diameter — the distance across the widest point of the circular cross-section. Use calipers or a micrometer for an accurate measurement.
Example: To order this round bar, specify "6061 Aluminum Round Bar, 3-3/4" diameter x 144" length".
Order Checklist
- Product name and required dimensions (3-3/4" 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-T6 Aluminum Round Bar - 3-3/4" x 144"
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, Excellent Machinability, Excellent Corrosion Resistance
- Primary Applications
- Heavy-duty shafts, forging stock, large machined parts
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock 6061 Aluminum Round Bar in diameters from 1/8" to 6" and standard lengths of 144". This 3-3/4" x 144" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

