Yes, metal expansion joints can be used in high-temperature applications. The maximum temperature that metal expansion joints can withstand depends on several factors such as the type of metal used, the design of the expansion joint, and the specific application requirements.
The most commonly used metals for high-temperature expansion joints are stainless steel, Inconel, and Hastelloy. Stainless steel is often used in applications where the temperature range is between -100°C to 500°C (-148°F to 932°F), while Inconel and Hastelloy are used in more extreme temperature ranges up to 1100°C (2012°F) and 1200°C (2192°F), respectively.
The design of the expansion joint is also critical in determining its maximum temperature capability. For example, the bellows' thickness and the number of plies in the expansion joint can affect its ability to withstand high temperatures. Additionally, the end fittings and welds used in the construction of the expansion joint must also be able to withstand the high temperatures.
It is important to note that the maximum temperature that an expansion joint can withstand also depends on the specific application and the conditions under which it is used. Factors such as the rate of temperature change, the pressure, the vibration, and the presence of corrosive materials can all affect the performance of an expansion joint at high temperatures. Therefore, it is crucial to consult with a qualified engineer or manufacturer to determine the appropriate type and design of the expansion joint for a specific high-temperature application.