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

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

• A. -40°F to 120°F
• B. 0°F to 100°F
• C. -20°F to 100°F
• D. -60°F to 100°F

Answer: (A)

Temperature affects the strength and ductility of chain used in lifting, so ASME B30.9 defines a normal-use range to keep the published capacities valid. The standard sets -40°F to 120°F (-40°C to 49°C) as the range where the chain can be used without derating. Inside this window, the material maintains its designed properties; outside it, brittleness at very low temperatures or reduced strength at high temperatures can compromise safety and performance. If you must operate outside this range, you’d need to refer to the standard or the manufacturer for derating guidance or to select a chain rated for those temperatures.

Temperature affects the strength and ductility of chain used in lifting, so ASME B30.9 defines a normal-use range to keep the published capacities valid. The standard sets -40°F to 120°F (-40°C to 49°C) as the range where the chain can be used without derating. Inside this window, the material maintains its designed properties; outside it, brittleness at very low temperatures or reduced strength at high temperatures can compromise safety and performance. If you must operate outside this range, you’d need to refer to the standard or the manufacturer for derating guidance or to select a chain rated for those temperatures.