Questions about austenitic stainless steel
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The hydrocracking reactor is made of austenitic stainless steel; the previous material used was 2 1/4Cr1Mo, while we now use the latest material, 12Cr2Mo1R. My question is: what are the differences between these two materials, and what are the characteristics of the new material?
To correct that, the material used for hydrogenation reactors is generally chromium-molybdenum steel with a stainless steel lining. The two materials you mentioned are names of different steel grades under two different standards; their properties are essentially the same. One is produced by *, so it naturally carries a * brand name, while the other is from * abroad, so it naturally has an overseas brand name. The domestically produced ones have also passed the tests, so there’s no need to worry. Check the relevant standards when applying. Thank you
Aen hydrogenation reactor usually doesn’t have a lining structure, right? It seems like they all require stainless steel cladding!
The two types of steel can be compared and analyzed based on their chemical composition and physical and chemical properties; it is generally appropriate to use domestically produced materials for such comparisons.
LZ, the material you mentioned is not stainless steel; hydrogenation reactors are made of CrMo steel with a stainless steel overlay.
LZ, the material you mentioned is not stainless steel; hydrogenation reactors are made of CrMo steel with a stainless steel overlay.
2 1/4Cr1Mo and 12Cr2Mo1R are the same CrMo steel; 12Cr2Mo1R is the name used for it. At present, this material still has better quality, especially when it is very thick. Large hydrogenation reactors still use steel grades from foreign brands at present.
It turns out to be the same material in different specifications; so what is the effect of hydrogen embrittlement on this chromium-molybdenum steel with a stainless steel lining? What are the requirements for temperature and pressure? How to avoid hydrogen embrittlement from causing corrosion?