A 4-1/2″ aluminum round bar 6061-T6 is a solid cylindrical rod made from 6061 aluminum alloy, with a diameter of 4-1/2 inches (4.500″). This size is typically used for large, heavy-duty structural, mechanical, and custom-machined components that require a high level of strength, durability, and resistance to corrosion, while still benefiting from aluminum’s lightweight properties.

📐 Basic Specifications:

• Diameter: 4-1/2 inches (4.500″ or ~114.30 mm)
• Material: Aluminum Alloy 6061
• Temper: T6 (solution heat-treated and artificially aged)
• Shape: Solid round bar (not hollow)

🧪 6061-T6 Aluminum Properties:

• Tensile Strength: ~45,000 psi
• Yield Strength: ~40,000 psi
• Hardness: Brinell ~95
• Corrosion Resistance: Excellent — highly resistant to corrosion, making it ideal for marine, outdoor, and industrial environments
• Machinability: Excellent — can be easily drilled, milled, cut, and turned
• Weldability: Excellent — works well with MIG and TIG welding processes

🔧 Common Uses for 4-1/2″ Round Bar:

• Shafts, spindles, and axles for very large and heavy-duty machinery or equipment
• Pins, standoffs, and dowels for robust mechanical assemblies
• Heavy-duty structural rods or support beams for industrial, aerospace, or construction projects
• Custom machined parts for critical, high-stress applications
• Tooling, fixtures, and die components
• Automotive, aerospace, and marine applications
• Large-scale DIY projects, prototyping, and industrial fabrication