Does the stainless steel water cup really not rust?

Regarding the issue of rusting of stainless steel water cups, the editor has made a lot of explanations from different angles in the previous article.Including 201 stainless steel can not be used for the production of water cups, especially can not be used for the use of water cup liners.Because 201 stainless steel is not food grade, and 201 stainless steel will rust and so on.So why did the editor write this content today? Is the content still the same?Answer: No.Does the stainless steel water cup really not rust?

At present, the food-grade stainless steel that can be used in the production of stainless steel water cups on the market is 304 stainless steel and 316 stainless steel.These two stainless steels are used in water cups and stainless steel products for people's daily life due to their stable structure and high-quality safety indicators.Usually we are saying that the stainless steel water cup will not rust once 304 stainless steel and 316 stainless steel are used.There is no problem with this simple explanation, but it cannot be said that these two types of stainless steel will not rust.

The reason why stainless steel does not rust is due to a special material ratio, so that stainless steel has strong corrosion resistance.But it cannot be said that stainless steel will not rust in any environment, even food-grade 304 stainless steel and 316 stainless steel.

These two stainless steel cups and other daily necessities cannot be soaked in beverages with strong acid and alkali for a long time, nor can they be used for a long time in an environment with high salt concentration.Both types of conditions will cause corrosion of 304 stainless steel and 316 stainless steel cups.The lighter corrosion shows that the product starts to turn black, and the more serious the material surface starts to corrode and peel off.

But in our ordinary daily life, these two types of environments are rarely encountered.So as long as the stainless steel cup made of 304 stainless steel and 316 stainless steel is used, you can still use it with confidence.At the same time, when stainless steel water cups are sold, there are usually some usage tips, such as not to hold carbonated drinks for a long time.

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