Although extremely strong, chain tends to falter when exposed to temperature extremes. The acceptable temperature range will vary depending on the grade of the chain and will also vary in reduction of Working Load Limit (WLL).
Temperature Ratings by Chain Grade
See the chart below from the American Society of Mechanical Engineers (ASME) regarding standard B30.9-2014 and reduction in WLLs. Both temporary (while heated) and permanent (after cooled) temperatures are included. Keep in mind that the effects are cumulative over time.
This means that each time the sling heats to an excessive temperature, its WLL continues to reduce. These effects are cumulative, so each time that same chain sling is heated to the excessive temperature, its working load limit will be reduced by an additional percentage.
Please note that the Occupational Safety and Health Administration (OSHA) requires all slings exposed to temperatures over 1000º F to be removed from service. When slings are exposed to extreme temperatures, contact the sling manufacturer for instruction.
Chain Slings from U.S. Cargo Control
We offer a wide variety of different chain slings suitable to your specific lifting and rigging needs. These slings are the ideal product for when you need extra strength and durability to lift cargo items. Choose your chain sling based on brand (KWB, Crosby, Pewag), by chain length, chain diameter, or end fitting. You can also request custom chain if you don't see any options available to fit your needs. Send in a request, and our expert manufacturing team will craft these high-quality chain assemblies for you in no time.
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