[Difficult Issue] The problem of high-temperature softening in copper pipes
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This post was last edited by hutom123 on 2009-6-16 at 15:27. I want to use purple copper tubes with an outer diameter of 8 mm as reaction tubes, placing them in a salt bath at 450 degrees Celsius. However, purple copper softens easily at high temperatures; is this approach too dangerous? Are there any ways to improve it?
The annealing process was stopped, and other pipes were used instead
For 2# hzh04213, brass tubes can be used, which will increase the heat exchange area by 10%
Copper tubes tend to anneal and soften at high temperatures; our company used to use this property for making gaskets
Copper has poor high-temperature performance; below 120 degrees Celsius, its allowable tensile strength is 29.3 MPa. As the temperature rises further, its mechanical strength drops sharply. When the temperature reaches 250 degrees Celsius, its allowable tensile strength is only two-thirds of that at room temperature, making it unsuitable for use under pressure.