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What is Ductile Iron?

Ductile Iron is also called ductile cast iron, spheroidal graphite cast iron, or nodular cast iron.It is a type of graphite-rich cast iron alloy for iron castings. Cast iron has good impact and fatigue resistance, elongation, and wear resistance because of the content of the spherical (round) graphite structures in the metal. For the same section size.its weighs is about 10 percent less than steel.

What is the Compositions of Ductile Iron?

Compositions Contents
Iron 94%
Carbon 3.2 – 3.60%
Silicon 2.2 – 2.8%
Manganese 0.1 – 0.2%
Magnesium 0.03 – 0.04%
Phosphorus 0.005 – 0.04%
Sulfur 0.005 – 0.02%
Copper <= 0.40%

To improve the strength of ductile iron, additional tin or copper can be added. To improve corrosion resistance, copper, nickel, or chromium can replace anywhere from 15-30% of the iron.

The advantages of Ductile Iron?

  • 1-Hardness than regular cast iron (gray iron).
  • 2-Strong tensile strength:at 60,000 psi and can go to 120,000 psi.(cast iron tensile strength is 20,000 – 60,000 psi)
  • 3-Strong yield strength:at 40,000 – 90,000 psi.
  • 4-Excellent wear resistance because of the graphite in the iron.
  • 5-Good ability to dissipates (gets rid of) heat very well
  • 6-Suitable for use on large machines.

What is the applications of Ductile Iron?

Ductile iron has a great advantage of strong metal with wear resistance.So the the usage,it is widely.Here we list out a simple table for products contain ductile iron:

Connecting rods (like in engines) Crankshafts Cylinders
Disc brake calipers Pipe and pipe fittings Truck axles
Machine Tooling Spindle supports Suspension system parts
Housings and manifolds Steering knuckles Idler arms
Hydrostatic Barrels Valves (especially high-pressure valves) Wheel hubs

Beside the ductile iron castings, ductile ironmagnesium castings, ductile gray iron castings, malleable iron castings are avalibale in our casting foundrry. Call us or email us to our qualified sales professionals today.Making us easy to reach me!