201 stainless steel is not the best , in some strange circumstances do not rust . Many types of stainless steel , suitable for the application environment is different , even if the same stainless steel in the same environment, anti-rust capability is also different because the main elements of stainless Cr, and Ni \ Ti different contents , but also on ability to produce rust difference , but the cost will be significantly different .
At present, many small manufacturing enterprises to reduce cost requirements , product design timber more relaxed , generally from good stainless steel to stainless steel , and some companies even use carbon steel , the cost is low , but the life of the product line decreased , it is not technology beyond the control of the ! ! ! Sold in the Chinese market, the majority of 200 series stainless steel according to GB almost no control of sulfur , carbon content, with manganese ( and nitrogen ) to replace some or all of the production of lower nickel content of nickel austenitic stainless steel . The disadvantage of this series of materials are: 18% chromium content with a low nickel content and the formation of reach balance of ferrite , for 200 series stainless steel of the chromium content to 15 % to 16% , in some cases dropped to 13 % to 14% , its corrosion resistance is 304 and can not be compared to other similar steels .
Source:
Tags: