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Can the 304 electric kettle with rusty bottom still be used?
Yes The 304 electric kettle can still be used if there is rust on the bottom. Generally speaking, there will be an oxide layer of iron and chromium on the surface of stainless steel. When stainless steel is used for a long time, the oxide layer will oxidize and produce rust spots. This is a normal phenomenon. As long as the kettle is clean, there is no need to be overly nervous.