Does 45 Quenched And Tempered Steel have the same corrosion resistance in different media

The corrosion resistance of 45 Quenched And Tempered Steel (45 quenched and tempered steel) in different media is different. The following is a specific analysis:
In the atmospheric environment: 45 quenched and tempered steel will react with oxygen, water vapor, etc. in the atmosphere to form an oxide film on the surface. If the humidity in the atmosphere is high or contains a certain amount of acidic gas (such as sulfur dioxide, carbon dioxide, etc.), it will accelerate the corrosion of the steel, but the corrosion rate is relatively slow.
In the freshwater environment: Generally, 45 quenched and tempered steel has a certain corrosion resistance in fresh water. However, if the water contains more dissolved oxygen, trace amounts of acidic and alkaline substances or some electrolytes (such as chloride ions), it will destroy the oxide film on the surface of the steel, trigger an electrochemical reaction, and cause the steel to corrode.
In the seawater environment: Seawater contains a large amount of chloride ions and other electrolytes, which are very corrosive to 45 quenched and tempered steel. Chloride ions have strong penetrability and can easily destroy the passivation film on the surface of steel, exposing the steel to the corrosive medium, thereby accelerating the corrosion process and causing local corrosion phenomena such as pitting and crevice corrosion.
In acidic medium: 45 Quenched And Tempered Steel has poor corrosion resistance in acidic medium. For example, in strong acid environments such as hydrochloric acid and sulfuric acid, the steel will react chemically with the acid and dissolve rapidly, leading to severe corrosion. Even in some weak acid environments, long-term contact will gradually reduce the performance of the steel.
In alkaline medium: 45 Quenched And Tempered Steel has relatively good corrosion resistance in alkaline medium. In general weak alkaline solutions, a protective film will form on the surface of the steel to hinder further corrosion. However, if the concentration of the alkali solution is high and the temperature is high, it may also corrode the steel.
If you want to know the corrosion resistance of 45 Quenched And Tempered Steel in different media, you can consult our customer service staff, and we will serve you wholeheartedly 24 hours a day!