For most applications where the material is used as a beam to withstand bending, rectangular tubes offer better and more efficient load-bearing capacity. However, for applications where the material is used as a column to withstand compression, both have their advantages and disadvantages.1. Bending Load-Bearing CapacityWhen a material is used as a beam (e.g., support frame, crossbeam), its resistance to bending is primarily determined by its section modulus. The larger the s...