But before you can decide on steel, you must first decide what type of steel you want to use.
Carbon steel or stainless steel?
The differences between carbon and stainless steel include:
corrosion resistance
The most obvious difference between carbon steel and stainless steel is corrosion resistance.As the name suggests, stainless steel is the more corrosion resistant material between the two.Carbon steel and stainless steel contain iron.
Iron oxidizes when exposed to the environment, resulting in rust.
The addition of chromium in stainless steel, chromium will increase the corrosion resistance of stainless steel, thus making stainless steel more corrosion resistant than carbon steel.
Chromium binds to oxygen more easily than iron.
When chromium attaches to oxygen, it forms a layer of chromium oxide, which protects steel from degradation and corrosion.
Carbon steel has little chromium content, and a small amount of chromium cannot form the chromium oxide layer.
And oxygen combined with iron, will lead to iron oxide, rust.
Therefore, if corrosion resistance is a key factor for you, stainless steel is your steel of choice.
mechanical properties
Because of the differences in mechanical properties between carbon steel and stainless steel, generalizations are difficult.Stainless steels are generally more malleable than carbon steels, mainly because of their higher nickel content.
However, some stainless steels are very brittle, such as martensitic stainless steels.
If carbon steel has enough carbon content, such as 0.30% carbon content, then carbon steel is easier to heat treatment than austenitic stainless steel.
appearance
If you are doing work that needs to be more aesthetically pleasing, you must consider the appearance of the metal.If appearance is important, it is best to choose stainless steel with a special finish.
Although both can be sanded and polished for a bright, shiny appearance.
But carbon steel needs to be quickly coated with a clear coat or paint after the polishing process.
If these are not used, carbon steel will lose its luster and eventually rust.
cost
Although different types of steel have different costs, stainless steel is generally more expensive than carbon steel.
This is mainly due to the addition of a variety of alloy elements in stainless steel, such as chromium, nickel, manganese and so on.
All these extra elements in stainless steel add to the cost compared to carbon steel.
Carbon steel, on the other hand, consists mainly of the relatively inexpensive elements iron and carbon.
If your project is on a tight budget, carbon steel may be the best choice.
How to choose?
In the choice of steel, you should carefully weigh the above factors to consider.If the metal is not exposed, then you don't have to worry about appearance.
However, if the steel is not exposed but subject to the corrosive environment, stainless steel may actually be the best choice.
In the end, which steel you choose will depend on your use and needs.
