Forging and casting are two very different manufacturing processes used to manipulate the shape of metal. In the casting process, metal is heated until molten. Then it is poured into a mold or vessel to create a desired shape. In the forging process, material is pressed or hammered into a certain shape while still maintaining a solid state. Now the question is which one is better?
Generally speaking, Forging is stronger than casting.
• Forged parts had a 26% higher tensile strength than the same cast parts.
• Forged parts had a 37% higher fatigue strength resulting in a much longer lifespan than cast parts.
• Cast iron only had 66% of the yield strength of forged steel, a measurement that indicates the load amount metal can hold before deforming.
However, casting do offer a wider range of metal options and it can be done for more complicated shapes.
The answer is it depends!