Which property is most important when selecting pipe for bending?

When selecting pipe for bending, lower carbon content is crucial because it typically leads to improved ductility. Ductility refers to the material's ability to deform under stress without breaking, which is essential when bending pipes. A pipe with high carbon content can be more brittle, making it prone to cracking or breaking during the bending process. Therefore, selecting pipe with lower carbon content helps ensure that the material can withstand the mechanical stresses involved in bending without compromising structural integrity.

The other properties, while important in various contexts, do not directly influence the bending process as significantly as ductility does. High tensile strength is beneficial for durability and load-bearing but does not guarantee the ability to bend without cracking. Low thermal expansion is more relevant in applications where temperature fluctuations are expected, as it affects the fit of connections, rather than bending capability. Corrosion resistance is essential for longevity and performance in specific environments but does not address the mechanical properties needed for bending operations.