At what temperature should alloy chain slings be temporarily de-rated?

Alloy chain slings should be temporarily de-rated at a temperature of 400 degrees Fahrenheit. This is because exposure to high temperatures can significantly affect the mechanical properties of the alloy steel used in the chains. Heat can cause loss of strength, making the sling less capable of safely carrying loads.

By de-rating the sling, users are advised to reduce its working load limit to account for the reduction in strength, thereby ensuring safety during material handling. The specific temperature threshold of 400 degrees Fahrenheit is a standard guideline established to help operators identify when it is necessary to adjust the sling's capacity in order to prevent potential hazards such as failure of the sling during use.

Temperatures above this point can lead to permanent damage to the metal structure of the sling, reducing its efficiency and safety in lifting operations. Knowing this threshold is essential for maintaining the integrity and reliability of rigging equipment, enhancing workplace safety.