When the appearance of the shell metal stampings appeared brown rust, many people will be surprised to think: stainless steel is not rusty, rust is not stainless steel, steel may be a problem.
In fact, under certain conditions will rust stainless steel.
Shrapnel metal stamping data with atmospheric oxidation resistance, called stainless steel.
Acid, alkali and salt corrosion resistance.
However, as the chemical composition of steel, processing conditions, different types of conditions of use and the environment medium the size of its corrosion resistance will also change.
For example, in a dry and clean atmosphere, rust protection is very good, if you move it to the sea areas, in the sea fog contains a lot of salt, it will soon be rusty, and 316 is excellent.
So any kind of stainless steel is not under any circumstances to resist corrosion and rust.
Shrapnel metal stamping pieces of shrapnel metal stamping is a very thin layer and hard chrome oxide film (
To avoid oxygen into continuously, oxidation, and obtain the function of corrosion.
Once the protective film is a substance.
In air or liquid oxygen constantly entering or metal iron atoms in the separation, forming loose iron oxide, metal surface rust.
There are many types of the surface film failure mode, common with dust, metal particles, covering organic liquid.
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