Why does stainless steel lose its color?
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I bought a stainless steel rice cooker, but when I wash it and wipe it with paper, black marks appear. Some people say it’s because the manganese content is too high and the quality is poor, while others say that using some kind of polishing agent will fix the problem. After all, it’s something used for eating, and I’m really worried :( So I’m going to ask those who are experts where to find out whether this rice cooker can still be used Could it be harmful to the body? :L
Stainless steel is also a matter of degree; it indeed has a much stronger resistance to rust compared to ordinary steel, but this is still a relative concept. When exposed to certain slightly corrosive substances, stainless steel can still rust and lose its color! There are many types of stainless steel, such as 201, 304, 316, and so on. The stainless steel basins we buy in the market are actually made of 201 steel; they contain very little nickel, and are commonly referred to as \"stainless iron\", which is why they lose their color over time