Much of the ductile iron production is used in the production of ductile iron pipes for drinking water or sewage lines. It competes with plastic materials such as PVC and polyethylene (both high and low density) and polypropylene, which are much lighter than steel or cast iron, but as they are softer, they require protection to avoid physical damage.

Ductile iron is widely used in sewer covers and scupper grates as it is a material that supports the passage of vehicles well.

Ductile cast iron is especially useful in many items in the automotive industry, where strength can exceed aluminum, but does not necessarily require steel. Other industrial applications include diesel trucks (especially those that cannot travel on public roads due to their weight, they are special for mines), agricultural tractors and oil pumps. In the manufacture of wind turbines it is used for structural parts and for shaft support. Ductile cast iron is useful for large, complex figures with fatigue loading.

Ductile iron is also used in grand pianos (the iron plates that give tension to the piano strings).

Ductile iron is widely applied in different infrastructure sectors, thanks to its combination of resistance, durability and versatility.[11]​.

Field of water supply, this material stands out for its high mechanical resistance, long useful life and flexibility, which makes it one of the preferred options for hydraulic distribution networks, both in urban and rural areas.[12]​.

Irrigation systems, especially in agricultural environments, ductile cast iron offers advantages such as adaptation to uneven terrain, pressure resistance and long useful life, making it ideal for infrastructures that require reliability and low maintenance.[13]​.

Sanitation sector, this type of cast iron is used in drainage and sewage networks due to its ability to withstand demanding conditions, guarantee tightness and maintain efficient flow in systems subjected to variable loads and corrosive environments.[14]​.

A typical chemical analysis of this material would be:.

Elements such as copper or tin can be added to increase hardness and elastic limit, although ductility is reduced at the same time. Improved corrosion resistance can be achieved by replacing 15% to 30% of the iron in the alloy with varying amounts of nickel, copper, or chromium.

Ductile iron has the highest tensile yield point of an alloy with iron, which ranges from 480 MPa to 930 MPa. Its elastic modulus is higher than gray cast iron, around 172 GPa.[10]​.

Much of the ductile iron production is used in the production of ductile iron pipes for drinking water or sewage lines. It competes with plastic materials such as PVC and polyethylene (both high and low density) and polypropylene, which are much lighter than steel or cast iron, but as they are softer, they require protection to avoid physical damage.

Ductile iron is widely used in sewer covers and scupper grates as it is a material that supports the passage of vehicles well.

Ductile cast iron is especially useful in many items in the automotive industry, where strength can exceed aluminum, but does not necessarily require steel. Other industrial applications include diesel trucks (especially those that cannot travel on public roads due to their weight, they are special for mines), agricultural tractors and oil pumps. In the manufacture of wind turbines it is used for structural parts and for shaft support. Ductile cast iron is useful for large, complex figures with fatigue loading.

Ductile iron is also used in grand pianos (the iron plates that give tension to the piano strings).

Ductile iron is widely applied in different infrastructure sectors, thanks to its combination of resistance, durability and versatility.[11]​.

Field of water supply, this material stands out for its high mechanical resistance, long useful life and flexibility, which makes it one of the preferred options for hydraulic distribution networks, both in urban and rural areas.[12]​.

Irrigation systems, especially in agricultural environments, ductile cast iron offers advantages such as adaptation to uneven terrain, pressure resistance and long useful life, making it ideal for infrastructures that require reliability and low maintenance.[13]​.

Sanitation sector, this type of cast iron is used in drainage and sewage networks due to its ability to withstand demanding conditions, guarantee tightness and maintain efficient flow in systems subjected to variable loads and corrosive environments.[14]​.