Abstract:Many stainless steel joints and carbon steel joint...
Many stainless steel joints and carbon steel joints appearing on the market now, although the signboard says stainless steel, many are actually "stainless iron" products.
So, how to identify stainless steel and carbon steel joints? Identify from the mark: many stainless steel products are stamped with steel stamps, such as: 13-0, 18-8, etc. The numbers in front of the short line indicate the chromium content of the product, and the number behind the short line The numbers indicate the nickel content in the product.
For example, 13-0 indicates that it only contains chromium and no nickel, commonly known as "carbon steel"; while 18-8 indicates that the product contains chromium and nickel, which is stainless steel. Negotiating from sound: tapping stainless steel joints or "carbon steel joints" can also be used as a way of discrimination. Attract with permanent magnets: real stainless steel is not attracted by magnets, "carbon steel" can be attracted by magnets. Although "stainless iron" can be attracted by magnets. "There are differences in properties from stainless steel, but in terms of their ability to resist rust, they are significantly better than wrought iron and cast iron cookware.
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