Ductile Iron Castings

Ferroloy is a highly flexible foundry in Wichita, Kansas pouring ductile iron castings. We are a turnkey supplier of quality cast iron parts for the agriculture, construction, industrial equipment, hydraulics and valves industries. We have the ability to produce ductile iron castings up to 70lbs.

Whether you have a part ready for casting, or you need a custom casting design, Ferroloy has the capabilities to produce a high quality part for your needs from start to finish.

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Ductile Iron Castings Advantages

Ductile iron castings combine the processing advantages of a low melting point, good fluidity and machinability with many of the engineering advances of steel including high strength, ductility and wear resistance. These qualities allow for a much higher tensile and yield strength as well as a lower damping capacity.

Ductile iron castings

Microstructure of Ductile Iron

Ductile iron, also referred to as nodular iron or spheroidal graphite iron, has an unusual combination of properties obtained because the graphite occurs as spheroids rather than flakes as in gray iron. This mode of solidification is obtained by adding a very small but specific amount of magnesium to molten iron. The allowable content of minor elements that can interfere with the graphite spheroid formation in the base iron is severely restricted. The added magnesium reacts with the sulfur and oxygen in the molten iron and changes the way the graphite is formed.

Tensile & Yield Strength

Ductile iron has a minimum tensile strength of 60,000 psi and a minimum yield strength of 40,000 psi. Ductile iron’s commonly established properties are tensile strength, yield strength and percent elongation.  Because of the nominal and consistent influence of spheroidal graphite, the tensile properties and the Brinell hardness of ductile iron are well correlated.

Ductile iron microstructure

Low Damping Capacity

The relative ability of a material to absorb vibration is evaluated as its damping capacity. The quelling of vibration by converting the mechanical energy into heat can be important in structures and devices with moving parts. Ductile iron has a relative damping capacity of 0.14, significantly less than that of a similar gray iron part with a damping capacity of 1.  Still, ductile iron compares favorably versus steel alloys in terms of damping capacity.

Applications for Ductile Iron Castings

Ductile Iron, because of the increased strength and ductility is used in more engineered applications such as:

  • Value Bodies
  • Compressor Valves
  • Couplings
  • Sprocket Wheels
  • Hydraulic Valves & Cylinders
  • Structural Brackets
  • Rollers
  • Cable Drums
  • Frames
  • Pumps
  • Crankshafts
  • Camshafts
  • Exhaust Manifolds
  • Machine frames
  • Flanges
  • Hubs
  • Gear Boxes

Ductile Iron Part Design

Looking for a partner to assist with casting a part? Our team of casting experts work with design engineers to adequately determine the best method for part production.

OEMs can typically reduce costs up to 60% by converting to a casting. Contact Ferroloy today and let us show you how.

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From molding to final assembly, we’re your turn-key solution for ductile iron parts.