Theoretical Weight vs. Actual Weight of Materials
All steel, aluminum and other metals are quoted and sold to a theoretical weight but this may not be the exact weight of material you receive. This is because theoretical weight is calculated by nominal dimensions (volume) and density and does not account for manufacturing deviations. All materials are produced within a tolerance and allow deviations in the materials resulting in weights that can be more or less than the theoretical weight. Actual weight call only be obtained by weighing the material with a scale.