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Definition of stainless steel

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2018/10/11 17:14
Stainless steel, in simple terms: stainless steel is not steel that will not rust, but steel that is not easy to rust. In 1910, it was found that 12% chromium Cr was added to plain carbon steel, which has corrosion resistance and oxidation resistance. Therefore, in the general definition, 12% chromium Cr can be called stainless steel.
According to the national standard GB20878-2007 stainless steel and heat-resistant steel grades and chemical composition of the definition: stainless steel, stainless steel, corrosion resistance characteristics, chromium Cr content of at least 10.5%, and the maximum carbon content should not exceed 1.2%.
However, according to the recent national standard GB20878-2007 stainless steel and heat-resistant steel grades and chemical composition of the definition: stainless steel, stainless steel, corrosion resistance characteristics, chromium Cr content of at least 10.5%, and the maximum carbon content should not exceed 1.2%.
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