by webmanager webmanager

If you’ve ever wondered what goes into building everything around you, you’ll know that metal is the answer. You might even be able to guess which metal but what about the details of each of these metals? When it comes to the nitty-gritty of these metals and which kind of iron, steel or alloy goes into which product, most of the people are clueless.

One common kind of metal that is used for many purposes is Ductile Iron. The ductile iron manufacturers in India focus on this particular metal because of its strength and wear resistance and its non-brittle nature as compared to other metals. 

What is ductile iron? 

Also known as ductile cast iron, spheroidal graphite cast iron, or nodular cast iron, ductile iron was patented in 1948. It is a type of graphite-rich cast iron discovered by the metallurgist, Keith Millis. Due to the inclusion of nodular or spherical graphite particles, ductile iron is generally stronger and not brittle, unlike other varieties of iron. Commonly, this metal comprises mostly iron and a mix of carbon, silicon, manganese, magnesium, sulfur, copper and phosphorous. 

What makes ductile iron better? 

Ductile iron is much stronger and resilient than other metals. The tensile strength of cast iron is 20,000 – 60,000 psi while ductile iron starts at 60,000 psi and can go to 120,000 psi.  The yield strength for ductile iron is generally 40,000 – 90,000 psi. Ductile iron also has excellent wear resistance because of the graphite in the iron. When you have something rubbing against ductile iron, the ductile iron wears away much slower than many other metals. The wear resistance is partly from the graphite structures that can act as a dry lubricant on the iron. 

Almost 50% of the ductile iron sold is used for sewage and pipeline work but it also has many other applications. From cylinders to engines, machines to pianos, truck axles, and yokes to even military equipment, ductile iron is used for all of these products. 

Benefits Of Ductile Iron That Everyone Should Know

Ductile iron is the preferable iron worldwide due to its innumerable advantages. As compared to steel, ductile iron is more powerful. 

  • It is easy to use and positioned.
  • It is a synonym of strength and weight. 
  • Cost creation of ductile iron is cheaper than steel.
  • It has an excellent ability to match with machines. 

Ductile iron is a perfect mixture of authenticity, power and requires less cost to manufacture. 

Characteristics Of Ductile Iron

To produce different ductile iron types, managing the model construction is crucial throughout the graphite while the moulding process occurs. If you make little changes in the composition, you will get a new ductile iron type.

Ductile iron is also recognised as steel if graphite spheroids separated during its matrix. When graphite spheroids are dissolved in the metallic matrix, it affects ductile qualities. But only the use of graphite spheroids won’t affect it.

Ductile iron consists of several matrices; let’s see a few of them:


It consists of a ferrite which is a real, flexible, ductile iron with insufficient power. So, this matrix does not have good wear resistance. But when it comes to resistance and machinability, you can count on it.


It is a blend of ferrite and iron carbide. It is tough having average flexibility. But it has good strength, wear resistance, and machinability. 

Pearlite And Ferrite

It is the most common type of ductile iron. It is a mixture of pearlite and ferrite.


India has a high demand for ductile iron and with the increasing demand, more companies are producing and selling this metal. A family-owned enterprise for three generations now, Govind Steel Company Limited from Kolkata is one of the leading ductile iron manufacturers of India and foundries in the country. To know more, visit