What precautions should be taken when using Austenitic stainless steel JXSBDM01－0040 at temperatures above 525°C? Reason?
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What precautions should be taken when using Austenitic stainless steel JXSBDM01－0040 at temperatures above 525°C? Reason? This post was last edited by Drifting in the north on 2008-12-19 15:43]
GB150-1998 stipulates that when austenitic steel is used at temperatures above 525°C, its carbon content must be at least 0.04%. This is because when austenitic steel is used at temperatures above 500–550°C, if its carbon content is too low, its strength and oxidation resistance will decrease significantly. Therefore, general guidelines are established for the range of applications of ultra-low carbon (C≤0.03%) austenitic stainless steels: 18-9 grade materials can be used up to around 400°C, while 18-12-2 grade materials can be used up to around 450°C. When the operating temperature exceeds 650°C, abroad it is common to require H-grade 304 and 316 grades, meaning a slightly higher carbon content (C=0.04–0.1%), primarily to ensure corrosion resistance as well as heat resistance and thermal strength.
GB150-1998 stipulates that when austenitic steel is used at temperatures above 525°C, its carbon content must be at least 0.04%. It is mainly to consider high-temperature strength and prevent oxidation, which could lead to a decrease in strength.