Ductile Iron Casting

Ductile Iron Casting has many advantages over cast steel or malleable iron in applications that require low solidification shrinkage. Sioux City Foundry has the knowledge and experience to meet your needs. Call 888-550-2564 and speak with a member of our qualified staff today!

• Castings from a few ounces to a few tons, in small and large quantities
• Wide range of ASTM standard casting grades, including: gray, ductile, austempered ductile and ni-hard iron castings
• In-house metallurgical testing and heat-treat capabilities

Experienced Ductile Iron Casting

Ductile Iron Casting, also known as casting ductile iron, nodular cast iron, spherulitic graphite cast iron, spheroidal graphite iron or SG iron, is a type of casting invented by Keith Millis at the International Nickel Company Research Laboratory in 1943. Due to the "flake-like" shape of the nodular graphite inclusions, most cast iron is brittle. Ductile iron casting replaces the flakes with spherical shaped graphite, making it more flexible and elastic.

The castings made with ductile cast iron share the traditional benefits of cast iron durability, low cost and increased compressive strength, while offering more tensile strength. Compared to traditional alternatives, such as malleable iron or cast steel, ductile iron casting is more competitively priced.

Our ductile iron castings are produced to the current ASTM standard, ASTM A 536, along with any further certification a customer may require. Sioux City Foundry's experienced ductile iron casting foundry has been producing quality products for over 70 years.

Located in South Sioux City, Nebraska, we work with clients from across the nation and around the world. We supply ductile castings to customers from industrial, engineering, decorative, architectural, and municipal sectors, and all require high quality products, competitive pricing and quick order turn-around.

Our team of knowledgeable and experienced professionals, as well as our modern facilities and methods of production, allow us to provide competitively priced, high quality metal castings. New furnaces, installed in 2009, and our own in-house metallurgical testing and heat-treat capabilities, ensure our clients the quality they expect and deserve.

We can also pour and repair custom castings. Casting sizes range from a few ounces to several tons. We can make one-of-a-kind products or thousands of identical castings. We use green sand method, Flaskless no-bake molding system, and also use oil sand, shell sand, isocure, and no-bake cores as needed.

In addition to custom iron castings, we offer in-house metallurgical testing, as well as provide heat-treat and specialty products, such as Pile Drive Hammers, Follow Blocks and Breaker Balls.