For Wire Rope Slings with Fiber Core, what is the acceptable temperature range?

• A. Between 0 degrees and 100 degrees Fahrenheit
• B. Between 400 degrees Fahrenheit and -40 degrees Fahrenheit
• C. Between -40 degrees and 200 degrees Fahrenheit
• D. Between 180 degrees Fahrenheit and -40 degrees Fahrenheit

Answer: (D)

Wire rope slings with a fiber core have a limited safe temperature range to protect both the steel rope and the fiber core. The lower limit of -40°F is set because extreme cold can make components brittle and lubricants less effective, increasing the risk of damage during handling and use. The upper limit of 180°F reflects the fiber core’s greater sensitivity to heat; higher temperatures can degrade the core material and reduce sling strength, leading to failure under load. Choices that start above -40°F or that allow temperatures up to 200°F, 400°F, or higher do not account for the fiber core’s temperature sensitivity, so they are not appropriate.