Herramientas prácticas para trabajos de precisión
Calculadora de Peso de Metal y Lista de Corte
Calcule el peso de placa, barra redonda, barra cuadrada, tubo o perfil angular a partir de la sección transversal, la densidad y la lista de corte.
7850 kg/m³ (= 0.284 lb/in³)
Sección transversal esquemática, no a escala. Las dimensiones mostradas en el dibujo están siempre en milímetros.
como funciona
Respuesta directa. Pick a profile (plate, round bar, square bar, round tube or angle), enter its cross-section dimensions and a material density, then list every cut length and how many pieces you need of each. The total weight is the sum of every piece's volume times the density.
Método. Each profile's cross-section area comes from basic solid geometry - a rectangle for plate, π×r² para barra redonda, un cuadrado, un anillo (π × (R² − r²)) for tube, and two overlapping rectangles for an angle. Weight = cross-section area × length × density, summed across every cut piece.
Ejemplo resuelto. Una barra redonda de 25 mm de acero dulce (7.850 kg/m³): área = π × 12,5² ≈ 490,87 mm². Cuatro longitudes de 6 m (6.000 mm): volumen por pieza = 490,87 × 6.000 = 2.945.243 mm³ ≈ 0,002945 m³, peso por pieza ≈ 0,002945 × 7.850 ≈ 23,12 kg, por lo que cuatro piezas ≈ 92.5 kg total - matching this calculator's defaults.
Densidades. The material dropdown gives typical, widely published reference densities for common metal families (mild/carbon steel, 300-series stainless, aluminum, brass, copper) - not a specific alloy's certified value. Choose "Custom" and enter your own figure whenever you have a mill certificate or datasheet density for the exact alloy and temper you're using.
Limitaciones
This calculates theoretical weight from nominal geometry and a typical density - it does not account for mill tolerances, actual-vs-nominal dimensions, surface coatings, or a specific supplier's certified product weight. Real stock can vary by a few percent from the nominal size and density used here; for a purchasing or shipping-weight decision, confirm against the mill certificate or supplier's published weight-per-length figure for your exact product.
Preguntas frecuentes
Why is my actual stock heavier or lighter than this result?
Mill tolerances mean real bar, tube, and plate stock rarely matches its nominal dimensions exactly, and density varies alloy-to-alloy within a family (for example, different aluminum alloys typically span roughly 2,640-2,810 kg/m³). Use a certified density and measured dimensions when precision matters.
Can I mix different profiles or materials in one total?
Not in a single calculation - each run covers one profile and one density across all its cut pieces. For a mixed job, run the calculator once per profile/material combination and add the totals yourself.
What does the angle profile assume?
It models a standard L-shaped (equal or unequal-leg) angle cross-section as two overlapping rectangular strips, which matches common structural and fabrication angle stock. It does not model rounded internal fillets or rolled-corner radii, which real angle iron has and which very slightly reduce the true cross-section area.
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