Cast iron vs. cast steel: advantages and disadvantages

Casting fusion molds is one of the most popular methods of producing durable, high-quality parts. Because casting allows for a high level of detail, no additional fabrication or assembly is required. While a wide range of materials can be cast, steel and iron are the most commonly used due to their excellent mechanical qualities in a wide range of applications.

Differences between cast iron and cast steel
Castability
Cast iron is a fairly simple material to work with because it can be poured smoothly and does not shrink nearly as much as steel. Because of its fluidity, cast iron is an excellent metal for use in construction or ornate ironwork structures such as fences and street furniture.
Corrosion Resistance
In terms of corrosion resistance, iron is superior to steel. This does not preclude the possibility of corrosion in both cases. If left unprotected, both metals will oxidize in the presence of moisture. They will eventually decay completely. It is recommended that cast steel and cast iron parts be coated to prevent this from happening.
Cost
Cast iron is usually cheaper than cast steel due to the lower price of materials, energy, and labor required to make the final product. Although raw steel is more expensive, prefabricated steel can also be used. This includes plates, bars, rods, tubes and beams.
Advantages and disadvantages of cast steel
The design flexibility of cast steel is known to be its main feature. The designer of castings has the greatest creative freedom. Now it is possible to realize complex shapes and hollow section pieces. Cast steel, on the other hand, is less shock-absorbing, wear-resistant and fluid. Compared to cast iron, casting properties are inferior. In addition, the cost is higher than ordinary cast iron.

Advantages and disadvantages of cast iron
Cast iron has many advantages including high wear resistance, machinability and low notch sensitivity. On the other hand, its tensile strength and elongation are extremely low. As a result, it can only be manufactured in limited quantities and for metal products with low physical requirements. Both steel and iron castings have advantages and disadvantages. Depending on the application and physical characteristics, either of them should be used.