6061 Aluminum Rounds - 4-1/4 Inches
6061-T6 Aluminum Round Bar - 4-1/4" x 144"
This 4-1/4" diameter 6061-T6 Aluminum Round Bar offers a versatile combination of high strength, workability, and corrosion resistance. Conforming to ASTM B211, its substantial size is ideal for machining heavy-duty structural components and large shafts. In stock for Los Angeles pickup.
- 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, known for its high strength-to-weight ratio. The T6 temper indicates it has been solution heat-treated and artificially aged to achieve its peak strength. Conforming to ASTM B211, this grade provides good machinability and excellent weldability, making it a reliable choice for a wide range of fabrication projects.
As a large-diameter bar, this 4-1/4" round is specifically suited for demanding applications. It is frequently used as stock for heavy-duty shafts, industrial rollers, large hydraulic manifolds, and custom-machined structural parts where strength and dimensional stability are critical for performance and safety.
Specifications
- Material: 6061-T6 Aluminum
- Standards: ASTM B211
- Strength/Tensile: 45,000 PSI
- Dimensions: 4-1/4" Diameter x 144" Length
- Finish: T6 Temper, Mill Finish
- Certifications: Mill Test Report (MTR) Available
Applications
- Industrial Machinery: Heavy-duty shafts and rollers - high strength handles significant torque and load.
- General Fabrication: Forging stock and large base plates - excellent workability for custom structural parts.
- Aerospace & Automotive: Jigs, fixtures, and structural components - strong, lightweight, and easily machined to precise tolerances.
- Marine: Large fittings and structural supports - superior corrosion resistance in harsh marine environments.
Target Users
Machinists, industrial fabricators, and engineers rely on large-diameter 6061-T6 Round Bar for robust and reliable components in demanding applications throughout the Los Angeles area.
Finish Options
This product comes standard with a T6 temper and a mill finish, which may have minor surface imperfections from the manufacturing process. It is an excellent substrate for anodizing, painting, or powder coating for enhanced protection or aesthetics. 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 its circular cross-section. Use calipers or a micrometer for an accurate measurement.
Example: To order this round bar, specify "6061-T6 Aluminum Round Bar, 4-1/4" diameter x 144" length".
Order Checklist
- Product name and required dimensions (4-1/4" x 144")
- Material specification and quantity
- Confirm grade (6061-T6) meets project requirements
- Surface finish requirements (Mill Finish)
- Certifications required (Mill Test Report)
- Special cutting, handling, or delivery needs
Quick Facts
- Product
- 6061-T6 Aluminum Round Bar - 4-1/4" x 144"
- Material
- 6061-T6 Aluminum
- Standards
- ASTM B211
- Key Properties
- 45,000 PSI tensile, good 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-T6 Aluminum Round Bar in diameters from 1/8" to 6" and standard lengths of 144". This 4-1/4" x 144" size is available for immediate pickup in Los Angeles.
Custom cutting services available.
Contact for Sizing

