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stainless steel pipe 316l

来源:PUTIE发布日期:2022.04.27浏览:49|加入收藏
stainless steel pipe 316l

stainless steel pipe 316l,The two most commonly used stainless steels are 304 and 316 (or 1.4308 and 1.4408 corresponding to German/European standards). The main difference between 316 and 304 in chemical composition is that 316 contains Mo, and it is generally recognized that 316 has better corrosion resistance. More resistant to corrosion than 304 in high temperature environments. Therefore, in high temperature environments, engineers generally choose parts made of 316 materials. But the so-called things are not absolute, in the environment of concentrated sulfuric acid, no matter how high the temperature is, do not use 316. Otherwise, it will be a big problem. Anyone who has studied mechanics has learned threading, and still remember the black solid lubricant that needs to be applied in order to prevent the thread from being seized at high temperature: molybdenum disulfide (MoS2), from which two conclusions can be drawn: One: Mo is indeed a high temperature resistant substance (do you know what kind of crucible is used to melt gold? Molybdenum crucible!). Two: Molybdenum easily reacts with high-valent sulfur ions to form sulfides. So no stainless steel is super invincible and corrosion-resistant. After all, stainless steel is a piece of steel with more impurities (but these impurities are more corrosion-resistant than steel), and steel can react with other substances.
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