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ductile cast iron

Ductile Cast Iron

With decades of experience pouring Ductile Cast Iron and over 140 years as a top quality foundry, Sioux City Foundry has the knowledge to provide all your casting needs. Call 888-550-2564 for a free quote today.


Benefits of Ductile Cast Iron

Ductile cast iron (also known as ductile iron, nodular cast iron, spherulitic graphite cast iron, spheroidal graphite iron or SG iron), was invented in 1943 at the International Nickel Company Research Laboratory by Keith Millis. While most varieties are brittle, due to the flake-like shape of the nodular graphite inclusions, the spherical shape of the graphite in ductile cast iron makes it more flexible and elastic.


Similar to cast iron, Ductile Cast Iron provides comprehensive strength and durability at a competitive price. Its increased tensile strength and resilience are two benefits of ductile cast iron. Ductile cast iron has become a world-class material. It offers casting solutions at a competitive price compared to traditional alternatives, such as malleable iron or cast steel.


Sioux City Foundry has been producing ductile iron castings for over 70 years. Our experienced and knowledgeable staff, along with our modern production methods allow us to satisfy a wide range of our clients' ductile cast iron needs. We provide quality products such as: pumps, valves, forges, rolling stock and rolling mills in a wide range of OEMs. Our customers and markets vary from the automotive and aerospace sectors, quarries, mines, railways and even government sectors.


Our castings are produced in compliance with the current ASTM standard, ASTM A536, along with any further certification a customer may require. Call 888-550-2564 today to see how Sioux City Foundry can meet all your ductile cast iron needs.