In a corrosive environment, the damage caused by the chemical or electrochemical action of the metal and the surrounding medium is called corrosion. In corrosive environments, corrosion can also occur when stainless steel is not properly selected.

Corrosion has many classification methods.

1. According to the nature of the action can be divided into chemical corrosion and electrochemical corrosion.

2. According to the form of corrosion, it can be divided into general (comprehensive, uniform) corrosion. The so-called general rot, the corrosion of the system is distributed on the entire stainless steel surface. The so-called local corrosion pitting, crevice corrosion, stress corrosion, corrosion fatigue, selective corrosion, Scour corrosion and so on.

3. According to the environment and conditions of corrosion, it can be divided into atmospheric corrosion, industrial water corrosion, soil corrosion, acid, alkali, salt corrosion, seawater corrosion, high temperature corrosion, (including liquid metal, molten salt, gas corrosion).

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