Good resilience. Impact value is comparable to medium-carbon steel, more than 10 times that of gray iron material.
High corrosion resistance. The water spray corrosion test shows that the corrosion amount after 90 days is only 1/40 of steel pipe and 1/10 of gray cast iron pipe. Its service life is twice that of gray cast iron pipe and five times that of ordinary steel pipe.
Good plasticity. Elongation ≥7%, similar to high-carbon steel, while grey iron material has zero elongation.
High strength. Tensile strength ób ≥ 420MPa, yield strength ós ≥ 300MPa, comparable to low-carbon steel, and three times that of gray iron material.
Due to the spheroidal graphite microstructure of ductile iron, it is superior to cast steel in reducing vibration resistance, thus more conducive to stress reduction. One important reason for choosing ductile iron is its lower cost compared to cast steel. The low cost of ductile iron makes it more popular, increases casting efficiency, and also reduces machining costs for ductile iron.
Ductile iron has comparable strength to cast steel. It boasts a higher yield strength, with a minimum of 40k, compared to the 36k of cast steel. In most municipal applications, such as water, saltwater, and steam, ductile iron exhibits superior corrosion resistance and antioxidant properties to cast steel.
































