China Aluminum Hollow Hexagon Tube Bar 6061 T651 Supplier
6061-T651 hollow aluminum hex tube bar is a hexagonal aluminum alloy bar with a precision internal bore, offering an ideal balance of strength, lightweight design, and machinability. Produced from heat-treated and stress-relieved 6061 aluminum, it provides excellent dimensional stability, corrosion resistance, and consistent performance during machining. Specified by distance across flats (AF) and inner diameter (ID), 6061-T651 hollow hex bars are available in custom sizes and are widely used in drone frames, cable and conduit carriers and hydraulic systems.
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 hollow 6061-t651 aluminum tube bar
Structural Features:
Based on the solid version, the hollow hex tube 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 hollow hex tube bar stock size
| Across Flats × Inner Diameter (mm) | Across Flats × Inner Diameter (mm) | Across Flats × Inner Diameter (mm) | Across Flats × Inner Diameter (mm) | Across Flats × Inner Diameter (mm) |
|---|---|---|---|---|
| H5 × Φ2.2 | H12 × Φ6.5 | H19 × Φ12 | H28 × Φ15 | H44 × Φ31 |
| H6 × Φ2.6 | H12 × Φ7.1 | H19 × Φ14 | H29 × Φ18.6 | H46 × Φ20 |
| H6 × Φ2.8 | H12 × Φ9.1 | H20 × Φ7.2 | H29 × Φ25 | H50 × Φ39 |
| H6 × Φ3.5 | H13 × Φ2.5 | H20 × Φ11 | H30 × Φ4.5 | H55 × Φ44 |
| H6.35 × Φ3 | H13 × Φ4.3 | H21 × Φ9.5 | H30 × Φ16 | H56 × Φ40 |
| H7 × Φ3.35 | H14 × Φ4.3 | H21 × Φ12.5 | H30 × Φ22 | H65 × Φ45 |
| H7 × Φ3.5 | H14 × Φ5 | H22 × Φ5 | H32 × Φ11.5 | H75 × Φ56.5 |
| H8 × Φ2.5 | H14 × Φ5.5 | H22 × Φ10 | H32 × Φ15 | |
| H8 × Φ3.5 | H14 × Φ6 | H22 × Φ12.5 | H32 × Φ18 | |
| H8 × Φ4.2 | H14 × Φ8 | H23 × Φ8 | H32 × Φ26.3 | |
| H8 × Φ4.35 | H14 × Φ9.2 | H24 × Φ8 | H33.5 × Φ25 | |
| H8.5 × Φ3.8 | H15 × Φ5.5 | H24 × Φ10.2 | H34 × Φ15.6 | |
| H9 × Φ4.4 | H15 × Φ8 | H24 × Φ14 | H35 × Φ15.6 | |
| H9 × Φ5 | H15.9 × Φ8.1 | H24 × Φ15.2 | H35 × Φ22.2 | |
| H9.4 × Φ5.1 | H16 × Φ5.1 | H25 × Φ10.6 | H35 × Φ27 | |
| H9.5 × Φ3.4 | H17 × Φ6 | H26 × Φ14.6 | H36 × Φ20 | |
| H9.5 × Φ5.2 | H17 × Φ6.8 | H26 × Φ18.5 | H36 × Φ23.5 | |
| H9.8 × Φ5 | H17 × Φ8 | H26 × Φ19 | H38 × Φ25 | |
| H10 × Φ4.5 | H17 × Φ11.5 | H27 × Φ11.8 | H38 × Φ27 | |
| H11 × Φ6.5 | H18 × Φ7 | H27 × Φ14 | H40 × Φ29.5 | |
| H12 × Φ2 | H18 × Φ9 | H27 × Φ19 | H41 × Φ15.5 | |
| H12 × Φ3.7 | H19 × Φ8.1 | H28 × Φ12 | H42 × Φ26 | |
| H12 × Φ4.1 | H19 × Φ9 |
