Some customers of Qingdao TianHua YiHe foundry asked us about the difference between cast iron and ductile iron, including their advantages and disadvantages. Here in, we listed their main properties and hope to give you a reference for material selection. Actually, before comparison, we need to clarify a definition. The cast iron is meaning a category of iron material, whose carbon content is higher than 2.1%. Therefore, it includes many different types according to different graphite shapes and microstructures, such as grey iron, ductile iron, white iron, malleable iron, vermicular iron, austenitic iron etc.
We will compare cast iron and carbon steel from mechanical and physical properties.Cast iron includes gray iron and ductile iron. Gray iron is cheaper than ductile iron, but it has much lower tensile strength and ductility than ductile iron, so gray iron is not replaceable material for carbon steel.
Ductile Iron Material Grades Choosing Guide This guide will help you to choose the suitable ductile iron material grades.You know that the foundry should use ductile iron to produce the castings for you, but actually, there are several different material grades.