Long-term/short-term temperature resistance of metal materials
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Dear fellow enthusiasts, I would like to discuss the temperature tolerance of common metal materials (such as Q235, 304, 316, 316L, and 904L, etc.) when used over the long or short term. Upon searching for information, I found many conflicting opinions; I’m reaching out to all of you experts for help.
Hello, fellow sea traveler! I’m not expressing myself clearly; I’m sorry! I just want to ask, for example, with 304SS, can it be used continuously for 24 hours in an environment at 750°C? Or, although it is 750°C, the operation is discontinuous – it is not used 24 hours a day – so it is uncertain whether 304SS can withstand such conditions.
One question plus one explanation – the end result: the question is utterly nonsensical. When it comes to metal materials and temperature alone, it’s like: 1+A+B=C. So what is the value of A? What is B? What is C? There are too many factors involved here, such as fatigue, temperature, operating conditions, environment, and so on. What do you think is a good way to discuss it? Or, more simply, you can just raise the question and everyone can discuss together what solutions exist for it. Also, forums are different now from before; there are very few people who are willing to engage in serious discussions and answer questions, and it’s already considered hard work to even respond. Many experts simply answer by saying “find the standard”. There are even some experts whose only purpose for posting and replying is to sell things!
It depends on the load. Normal stainless steel cannot withstand temperatures of 750 degrees; nickel-based alloys might be able to. Normal stainless steel can typically handle temperatures between 650 and 700 degrees. But since you only require 24 hours, as long as the load does not exceed the creep strength at that temperature, there should be no problem
Material issues – which one is not a matter that requires comprehensive consideration? It is, of course, also my responsibility for not thinking things through properly. I agree with your point – forums are not what they used to be; there are very few people who are willing to engage in serious discussions and answer questions, and it’s already considered hard work to simply reply. Indeed, things have changed a lot.