Ductile cast iron outperforms conventional cast iron in specific properties,
but its specific advantages need to be determined based on the specific application scenario:
Mechanical Property Comparison
The graphite in ductile cast iron is distributed in a spherical shape, effectively reducing matrix fracture. Its tensile strength and toughness are similar to those of forged steel, making it suitable for manufacturing high-load, high-wear-resistant parts. Conventional cast iron (such as gray cast iron) has flake graphite, which is more brittle and has lower tensile strength.
Casting Performance Differences
Ductile cast iron requires spheroidizing, which can cause the molten iron temperature to drop, making it prone to defects such as under-casting and cold shuts, and making the casting process more complex. Conventional cast iron has a relatively simple casting process and lower costs.
Application Selection
Ductile cast iron is widely used in urban water supply, gas transmission, industrial pipelines, and other fields. Its high strength and corrosion resistance can replace some steel.
Of course, the excellent performance of ductile cast iron is primarily due to its spherical graphite morphology, which enables the matrix strength utilization rate to reach 70-90%, far exceeding that of conventional cast iron. This structural feature enables it to withstand significant pressure and external loads, adapting to complex construction conditions and diverse operating environments. If you require custom ductile iron castings, consider collaborating with Mulan Group. With 12 years of experience in the production and processing of ductile iron castings, Mulan Group serves clients in over 30 countries and has received widespread recognition. We look forward to hearing from you.
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