SUS304 316L 321 stainless steel plate, industrial white steel plate, laser drilling, circular cutting, zero cutting

The two most commonly used types of stainless steel 304316 (or corresponding to German/European standards 1.4308 and 1.4408), the main difference in chemical composition between 316 and 304 is that 316 contains Mo, and it is generally recognized that 316 has better corrosion resistance, which is more resistant to corrosion than 304 in high-temperature environments. So in high-temperature environments, engineers generally choose 316 material components. But the saying goes, there is no absolute thing. In a concentrated sulfuric acid environment, no matter how high the temperature is, do not use 316. Otherwise, this matter will become a big deal. People who study mechanics have all learned about threads. Remember the black solid lubricant that needs to be applied to prevent thread bite under high temperatures: molybdenum disulfide (MoS2). From this, two conclusions can be drawn: firstly, Mo is indeed a high-temperature resistant substance (do you know what crucible gold is melted in? Molybdenum crucible!). 2： Molybdenum easily reacts with high valent sulfur ions to form sulfides. So no type of stainless steel is super invincible and corrosion-resistant. After all, stainless steel is a piece of steel with a lot of impurities (although these impurities are more corrosion-resistant than steel), and steel can react with other substances