The Difference between Carbon Steel Castings and Mild Steel Castings |
Posted: August 22, 2017 |
Valve bodies, turbine wheels, mining equipments, machineries of marine, pump casings-all these items of different varieties and utilities have one thing in common and that is that they all require steel casting. It is a specific kind of casting with various kinds of steels involved and is usually called for when cast iron is not able to provide required strength or resistance from shock. Even though it is a lot more complicated to cast steel than it is to cast iron due to steel’s higher melting point and the bigger rate of shrinkage, it also offers a balanced mixture of ductility and strength; the result being that the steel castings are tough enough to sustain under a considerable amount of stress and strain without damage. Depending on chemical composition of the steel, steel castings are roughly classified into two categories: carbon steel castings and mild steel castings. See the Brief info about all this in below infographics: Read more in detialed here: What is carbon steel? Carbon steel possesses approximately 0.05-1.70% of carbon in their weight. The higher the carbon percentage, the stronger becomes the steel. But at the same time, the presence of carbon tends to make the steel more brittle and less tensile. Hence achieving a right balance of carbon has to be attained in order to increase the utility of the steel. Carbon steel is further divided into two categories: high carbon steel (0.3-1.70% carbon) and low carbon steel (0.05-0.15% carbon). What is mild steel? Mild steel contains a very low amount of carbon in it, along with a couple of other elements including silicon, manganese and very little amount of phosphorous. Mild steel is the most prevalent type of steel and the credit of its popularity can be easily given to its ductility, strength and economic cost. The difference between the two types of castings: Though these two types of steel castings have their own advantages and disadvantages, the basic difference between the two can be listed as follows:
With all their differences, the carbon steel castings and mild steel castings are also different in their usages. In case of low-stress, consumer application designs, mild steel is a better option to go for as it is lightweight as well as economic. But in case of high-stress and especially industrial usage, designs should be including carbon steel castings, as they provide better strength and shock resistance.
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