KEVOS® MAKEOS · Materials
Stock Volume and Mass
What is the theoretical mass of this stock geometry?
Estimate mass for rectangular stock, solid round bar or round tube using an explicitly supplied density.
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How this tool works
Inputs, units and where to find them
| Input | Unit | Typical source |
|---|---|---|
| Shape | choice | Select the constant cross-section of the stock. |
| Length | mm | Overall length of the stock. |
| Width / outside diameter | mm | Width for rectangular stock; outside diameter for round stock. |
| Thickness / wall thickness | mm | Rectangular thickness or tube wall; ignored for solid round bar. |
| Density | kg/m³ | Material supplier density at the relevant condition; default is illustrative. |
Method and formulas
- Rectangular area = width × thickness. Round area = π × diameter² / 4.
- Tube inside diameter = outside diameter − 2 × wall; area = π × (outside² − inside²) / 4.
- Volume (m³) = area (mm²) × length (mm) / 10⁹. Mass = volume × density. Example: 1000 × 100 × 10 mm at 7850 kg/m³ is 7.85 kg.
Limitations
- Uniform cross-section and density only; ignores tolerances, weld beads, coatings and removed features.
- Theoretical mass is not a rated lifting load or a substitute for weighing.
- Example values are illustrations. Replace them with values for your actual task.
Typical uses
- material weight
- bar mass
- tube mass
- plate mass
Who it is for
- Estimators
- Designers
- Fabricators
What you get
- Cross-sectional area
- Volume
- Theoretical mass
Interpreting the result
- Include allowances for purchasing and handling only when supported by the actual stock and task.
References
- Machinery’s Handbook, 29th edition (Industrial Press, 2012), printed pp. 66–87, 380–384. Topic reference; no source tables or recommended settings are reproduced.
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