According to ASME B30.9, what is the normal temperature range for the use of chain?

The correct choice reflects the standard established by ASME B30.9 regarding the temperature range for chain usage, which is specifically set at -40°F to 400°F. This range allows for sufficient flexibility in various environmental conditions, ensuring that the materials used in chains maintain their properties without becoming brittle or losing strength due to temperature extremes.

Selecting this range is critical for safe operation in both extremely cold and warm climates, as it encompasses a broad spectrum applicable in many industrial and outdoor settings where chains are frequently employed. It ensures that operators can rely on the chain's integrity during hoisting and rigging tasks, mitigating risks associated with temperature-induced failures.

Other temperature ranges provided in the options fall outside the parameters defined by ASME B30.9, highlighting the importance of adhering to established standards for equipment use in various temperatures. This adherence ensures both safety and reliability when employing chains in line work and other applications.