Material Weight Calculator.
Calculate weight of plates, bars, pipes, tubes, and structural shapes. 60+ materials including Indian standards (IS 2062, EN, SS 304/316/410, Al 6061/7075, brass, copper, titanium).
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Indian + international density values (g/cm³)
TOTAL WEIGHT
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Material density quick reference
| Material | Density (g/cm³) | Density (kg/m³) | Notes |
|---|---|---|---|
| Mild Steel (IS 2062, EN8, 1018) | 7.85 | 7,850 | Most common structural steel |
| Stainless 304 / 316 | 8.00 | 8,000 | Austenitic — non-magnetic |
| Stainless 410 / 420 | 7.75 | 7,750 | Martensitic — magnetic, hardenable |
| Cast Iron (gray) | 7.20 | 7,200 | Lower than steel due to graphite |
| Aluminium 6061 | 2.70 | 2,700 | 1/3 weight of steel |
| Aluminium 7075 | 2.81 | 2,810 | Highest strength aluminium |
| Brass (IS 319) | 8.50 | 8,500 | Cu-Zn alloy |
| Copper | 8.96 | 8,960 | Pure |
| Titanium Grade 2 | 4.51 | 4,510 | 56% of steel weight, equal strength |
| Inconel 625 | 8.44 | 8,440 | Nickel super-alloy |
| Lead | 11.34 | 11,340 | Heaviest common engineering metal |
Material Weight Calculation
Estimating raw material weight is foundational for quoting, shipping, and machining cost calculation. Density × volume gives weight; the trick is computing volume for irregular shapes.
Common Material Densities
- Mild steel: 7.85 g/cm³
- Stainless 304/316: 7.95 g/cm³
- Aluminum 6061: 2.70 g/cm³
- Brass C36000: 8.50 g/cm³
- Copper: 8.96 g/cm³
- Titanium Ti-6Al-4V: 4.43 g/cm³
- Cast iron (gray): 7.20 g/cm³
- Polyethylene UHMW: 0.93 g/cm³
Volume Formulas by Shape
- Round bar: V = π × (D/2)² × L
- Plate: V = L × W × T
- Tube: V = π × ((OD/2)² − (ID/2)²) × L
- Hex bar: V = (3√3/2) × s² × L (where s = across-flats / √3)
Worked Example
500 mm of ⌀40 mild steel round bar:
- V = π × (20)² × 500 = 628,318 mm³ = 628.3 cm³
- Weight = 628.3 × 7.85 = 4.93 kg
Adding Allowances for Machining
Stock weight ≠ finished part weight. Account for:
- Machining allowance: 1-3 mm per side for milling, less for turning
- Clamping length: 30-50 mm extra for chucking
- Saw kerf: 2-3 mm per cut
- Yield loss: typically 5-15% scrap rate built into stock requirement
Multiply finished weight by 1.15-1.30 for milled parts, 1.05-1.10 for turned parts.
Related Tools
For full part costing, see Cycle Time Calculator. For material hardness, see Hardness Conversion. Document material spec in AS9102 Form 3.