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Can hoist hooks be repaired?


Can hoist hooks be repaired?

Typically hoist hooks are forgings processed from hot-rolled alloy steel blanks of medium carbon content,
such as grade AISI 4140. Hooks can be used in the “as forged” condition or further enhanced by thermal
processing (heat treatment). Although fatigue strength improves with heat treatment, there is a resulting
loss of ductility and elongation.

A repair that involves welding or any kind of heat treatment can affect the strength and ratings of a hook
and therefore is not recommended.

Keep in mind, when a hook is damaged or broken, it can be an indicator that the hoist was overloaded,
in which case the entire unit should be inspected for other damages.

In addition to referencing OSHA and ANSI requirements for hook repair, we also recommend that you always
contact the manufacturer before making any questionable repairs on their products.