While many materials can be cast, including several types of metals and composites, steel is generally the best and most popular. Steel has excellent mechanical properties and is suitable for a wide range of applications. Although the two look similar, they have distinct differences. Let's take a look at the difference between steel castings and iron castings.

carbon content
Both iron and steel are ferrous metals mainly composed of iron atoms. Carbon composition is the main difference between cast iron and steel. Cast iron typically contains more than 2% carbon, while cast steel typically contains 0.1-0.5% carbon. The carbon in the casting makes the material hard enough to use.

Castability
Cast iron is relatively easy to cast because it is easy to pour and does not shrink like steel. This fluidity makes cast iron an ideal metal for architecture or ornate ironwork structures such as fences and street furniture. Casting steel is much more difficult. It is less fluid than molten iron and more reactive to mold materials. It also shrinks more as it cools, which means more molten material needs to be poured.

Shock, Corrosion and Wear
While steel is better at withstanding sudden shocks without bending, deforming, or breaking, iron has better corrosion resistance. Cast iron generally has better resistance to mechanical wear than steel, especially in the case of frictional wear.