The reason why 34 stainless steel rusts is that stainless steel will corrode quickly in chloride ion environment.
The alloy elements in p>34 stainless steel are not dissolved into the matrix, which leads to low alloy content in the matrix and poor corrosion resistance. Moreover, it does not contain materials such as titanium and niobium, so there will be a tendency of intergranular corrosion, and low carbon content will also lead to intergranular corrosion of stainless steel.
after deep processing or grinding of p>34 stainless steel products, line-mounted or point-like concave mark defects occur on the surface of the products. Moreover, the surface of 34 stainless steel molded products will be shaped like orange peel under grinding or other conditions.
Extended information:
Characteristics of stainless steel:
1. Weldability
Most products need good weldability of raw materials, such as second-class tableware, thermos cups, steel pipes, water heaters, drinking fountains, etc.
2. Corrosion resistance
Most stainless steel products require good corrosion resistance, such as first-class and second-class tableware, kitchen utensils, water heaters, drinking fountains, etc. Some foreign businessmen also do corrosion resistance tests on products:
3. Polishing performance
Stainless steel products are generally polished during production, and only a few products, such as water heaters and drinking fountains, do not need polishing.
4. Heat resistance
means that stainless steel can still maintain its excellent physical and mechanical properties at high temperature.
5. Corrosion resistance
When the number of chromium atoms in steel is not less than 12.5%, the electrode potential of steel will suddenly change from negative potential to positive electrode potential. Prevent electrochemical corrosion.
Baidu encyclopedia -34 stainless steel