The composition of track fasteners, crucial components in railway construction, primarily involves medium carbon steel. This material choice provides a balance between strength and ductility, enabling the spike to withstand significant loads while also allowing it to deform rather than fracture under stress. The specific grade of steel used can vary, but it generally falls within a range that ensures sufficient tensile strength to maintain a secure connection between the rail and the tie.
The utilization of this particular metal offers several advantages. Its robustness ensures longevity and minimizes the need for frequent replacements, contributing to cost-effectiveness in the long run. Moreover, the inherent properties of the chosen metal allow for effective transfer of forces from the rolling stock to the supporting structure, maintaining track gauge and overall stability. Historically, this material has been favored due to its availability and relative ease of manufacturing, contributing significantly to the expansion of rail networks.