Cast iron and ductile iron are not the same thing.
Ductile iron is a type of cast iron, and the main difference lies in the morphology and properties of the graphite.
Different Graphite Morphologies
Cast iron: Carbon exists as flake, nodular, or vermicular graphite. Specific types include gray cast iron, malleable cast iron, and vermicular graphite cast iron.
Ductile cast iron: Graphite is spheroidized through a spheroidizing process, significantly improving its mechanical properties.
Differences in Mechanical Properties
Cast iron: Ordinary gray cast iron has lower strength and toughness, suitable for parts subjected to compressive loads (such as machine bases).
Ductile cast iron: Strength, toughness, and plasticity are close to steel, suitable for complex stress or wear-resistant applications (such as automotive parts).
Applications
Cast iron: Covers gray cast iron, malleable cast iron, etc., with wide applications but varying properties.
Ductile cast iron: As a subtype of cast iron, it is specifically used in fields requiring high strength and high wear resistance.
The above is a detailed explanation of the differences between cast iron and ductile iron. They are generally easily confused. However, if you have a large-scale demand for custom castings, you can choose to cooperate with Mulan Metal. Mulan Metal has 12 years of experience in metal casting production and processing, and has helped clients in more than 30 countries complete various commissioned production of casting products, receiving consistent praise. We look forward to your consultation.
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