Aluminum Round Tube Weight Calculator
Calculate the weight of Aluminum Round Tube by entering your dimensions. The density of Aluminum is 0.0975 lb/in³ (2699 kg/m³). Use this calculator for quick stock weight estimates in your CNC machining projects. Accurate weight calculations are essential for shipping quotes, material cost estimation, fixturing load analysis, and structural design verification. The theoretical weight formula assumes a uniform cross-section and standard alloy density; actual weights may differ slightly by grade and mill tolerance. Weight data is calculated using the standard volumetric formula multiplied by the material density constant shown above.
Material Properties
| Material | Aluminum |
| Shape | Round Tube |
| Density | 0.0975 lb/in³ / 168.5 lb/ft³ / 2699 kg/m³ |
| Example Weight | 0.861 lb / 0.391 kg |
Compare Materials — Round Tube
| Material | Weight (lb) | Weight (kg) |
|---|---|---|
| Aluminum (current) | 0.861 | 0.391 |
| Steel | 2.503 | 1.135 |
| Stainless Steel | 2.54 | 1.152 |
| Brass | 2.708 | 1.228 |
| Copper | 2.863 | 1.299 |
Sourcing and Use Notes
Aluminum stock for machining and fabrication ships in several common alloys: 6061-T6 is the structural workhorse for plates, brackets, and tooling fixtures; 7075-T6 trades weldability for higher yield strength and is preferred in aerospace ribs and high-load shafts; 5052-H32 dominates marine and sheet-metal work because of its corrosion resistance and formability. Specify the alloy explicitly on the purchase order — distributors will quote on generic '6061' if you let them, which can be 6061-T6511 extrusion that machines very differently from cold-finished 6061-T6 plate.
Round tube serves both structural and fluid-handling roles, and the stocking grade matters. Mechanical tubing (ASTM A513) covers general-purpose structural use with electric-resistance-welded (ERW) or drawn-over-mandrel (DOM) variants — DOM is concentric enough for hydraulic cylinder bodies. Welded tubing (cheaper) has an internal weld bead that may interfere with sliding parts. Seamless tubing (ASTM A106) is required for high-pressure steam and high-purity gas service. Aluminum tube is typically 6061-T6 with a clean drawn ID suitable for telescoping fits.
Common Applications
Aluminum Round Tube is a standard stock form used in structural frames, machine bases, brackets, and fabricated components. Its consistent cross-section simplifies weight-per-foot calculations and material takeoffs for procurement and shipping cost estimates. Engineers and machinists rely on theoretical weight data during the quoting and planning stages before final parts are produced. For large orders or weight-critical designs, request certified mill test reports (MTRs) to confirm actual density and alloy composition.
Sourcing and Weight Tolerance Note
This weight is based on the theoretical density of Aluminum. Mill tolerances (ASTM A6 allows ±2.5% on cross-sectional area for structural shapes) and surface treatments (anodizing, plating, painting) may add 1–3% to actual shipped weight. Order 5–10% material overage to account for saw kerfs and offcuts. Always verify actual material density with your supplier's material test report (MTR) for critical structural or load-bearing applications. Compare weights across materials using the comparison table above to make informed material selection decisions for your project.