The oxidation behavior of S355JR steel mainly refers to its chemical reaction with oxygen at high temperature (usually above 500℃). Under these conditions, the iron, carbon and other elements in S355JR steel will combine with oxygen to form iron oxides, and these oxides will form an oxide film of varying thickness on the surface of the steel. The oxide film can protect the inside of the steel from further oxidative erosion, but it can also fail for a variety of reasons.
The composition and properties of the oxide film have great influence on the heat resistance, oxidation resistance and mechanical properties of S355JR steel. For example, the small thickness and dense oxide film can improve the corrosion resistance and wear resistance of S355JR steel; And too thick oxide film may affect the mechanical properties of steel.
In addition, the oxide film can also affect the surface potential and electrochemical behavior of S355JR steel, thus affecting its corrosion behavior in a specific environment. Therefore, understanding the oxidation behavior of S355JR steel is an important step to improve its performance and extend its service life.
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