Stainless steel can be roughly divided into three categories: 200 series, 300 series, and 400 series.

The 300 series is the most commonly used, and the 200 series and 400 series are substitutes for the 300 series to a certain extent.
Strictly speaking, the 400 series is not called stainless steel, but stainless steel. Because it does not contain nickel, it can be attracted by magnets.
The 200 series and 300 series are made of nickel, so they are not magnetic and cannot be attracted by iron.
304 is the most common variety in the 300 series, so the price trend of the entire stainless steel can generally be judged from the price changes of 304.
The 200 series contains less nickel, the 400 series does not contain nickel, and the 300 series contains the most nickel, so the 300 series is most affected by the nickel price.

Stainless steel can be roughly divided into three categories: 200 series, 300 series, and 400 series. The 300 series is the most commonly used, while the 200 series and 400 series are substitutes for the 300 series to a certain extent. It should be noted that the 400 series is often called stainless iron because it does not contain nickel, so it can be attracted by magnets. However, the 200 series and 300 series contain nickel, so they are not magnetic and cannot be attracted by magnets.

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