China Aluminum Hexagon Bar 6061 T651 Supplier

What is aluminum hex bar 6061 T651?

Aluminum hex bars are widely used in industrial manufacturing thanks to their excellent combination of strength, machinability, and corrosion resistance. Depending on the design requirements, they are typically available in two main types — solid hex bars and hollow hex bars.

• Solid hex bars focus on structural strength and precision machining, ideal for bolts, shafts, and mechanical connectors.

• Hollow hex bars emphasize lightweight design and multifunctional integration, suitable for applications requiring wiring, cooling, or flow channels.

6061 T651 aluminum hexagon bar is a type of aluminum alloy bar with a hexagonal cross-section. The  "T651" indicates the temper or heat treatment applied to the metal. 6061 T651 aluminum hexagon bars come in various sizes, typically specified by the distance across the flats (AF). 

Chemical composition of 6061 T651 aluminum 

• Aluminum (Al): 95.85 - 98.56%

• Magnesium (Mg): 0.8 - 1.2%

• Silicon (Si): 0.4 - 0.8%

• Iron (Fe): 0.0 - 0.7%

• Copper (Cu): 0.15 - 0.4%

• Zinc (Zn): 0.0 - 0.25%

• Titanium (Ti): 0.0 - 0.15%

• Manganese (Mn): 0.0 - 0.15%

• Chromium (Cr): 0.04 - 0.35%

• Residuals: 0.0 - 0.15%

6061 T651 Mechanical Properties

• Ultimate Tensile Strength: 310 MPa (45,000 psi)

• Yield Tensile Strength: 275 MPa (40,000 psi)

• Fatigue Strength: 96.5 MPa (14,000 psi)

• Shear Strength: 207 MPa (30,000 psi)

• Hardness: 95 Brinell

• Elongation at Break: 12% (for thicknesses 1.6 mm and above)

• Modulus of Elasticity: 68.9 GPa (10,000 ksi)

Features and applicatins of of solid/hollow 6061-t651 aluminum bar 

Solid 6061-T651 Hex Bar — Strength and Stability

Structural Features:
The solid hex bar maintains maximum material density without internal voids, ensuring high radial strength and reliable load-bearing capability. Common across-flat sizes range from 5 mm to 500 mm, customizable upon request.

Typical Applications:

• Mechanical / Equipment Components: Bolts, nuts, shafts, and pins for automation machinery, medical devices, and compact industrial equipment.

• Transportation & Aerospace: Brackets, seat joints, and pipe clamps for aircraft and rail systems—reducing overall weight and enhancing corrosion protection.

• Electronics / Instrumentation: Precision support posts, conductive frames, and heat-dissipating mounts in devices like oscilloscopes and LED power systems.

• Tooling & Consumer Hardware: Fixtures, jigs, and structural parts in bicycles, furniture, and outdoor gear requiring strength with low mass.

Hollow 6061-T651 Hex Bar — Lightweight and Multifunctional

Structural Features:
Based on the solid version, the hollow hex bar introduces an internal cavity, reducing weight by 30–60% (depending on wall thickness, typically 1–5 mm). This design retains the hexagonal profile for anti-rotation benefits while adding internal space for wiring, cooling, or fluid transfer.

Typical Applications:

• Lightweight frameworks: Tent poles, drone frames, and bicycle tubes where reduced weight improves handling and endurance.

• Cable and conduit carriers: Structural supports that double as wiring channels in electronics or automotive interiors.

• Fluid and cooling systems: Pneumatic or coolant conduits that utilize the hex shape for easy fixing and alignment.

• Decorative / Functional Structures: Anodized hollow hex columns for adjustable furniture or rehabilitation devices — combining beauty, lightness, and practicality.

6061 t651 hexogonal bar stock size

Solid hex bar

Hollow hex tube

Shenzhen Chinalco Metal supplies high-quality 6061-T651 aluminum hex bars in custom dimensions, finishes, and processing forms. Moreover, 6061 t6 aluminum round bar and flat bar also available. 
Whether you need solid or hollow hex bars, precision cutting, or surface treatments (anodizing, coating), our engineering team can deliver the ideal solution for your project.
Contact us today to get specifications, samples, or a customized quotation.