Why is forged steel preferred for shackles used in overhead lifting?

Forged steel is preferred for shackles used in overhead lifting primarily because it provides increased toughness. The forging process involves shaping the steel under high pressure, which aligns the grain structure of the metal. This results in a material that can withstand higher stress and has improved fatigue resistance compared to cast steel or other alternatives. The enhanced toughness of forged steel ensures that it can absorb impacts and resist deformation during lifting operations, contributing to a safer rigging environment. This quality is critical for maintaining the integrity of lifting equipment and ensuring the safety of personnel involved in lifting operations.

While other materials may offer benefits in terms of weight or cost, the essential characteristic of toughness in shackles made from forged steel is what makes it especially suitable for the demanding conditions of overhead lifting tasks.