Difference between Cast Iron and Ductile Iron Castings

Difference Between Cast Iron And Ductile Iron Castings

Strength And Flexibility ď‚ž Ductile

Iron is not brittle like cast iron. Ductile iron castings are flexible and have more fatigue resistance than cast iron.

ď‚ž Ductile

iron castings have more strength when compared to cast iron castings. As a result, ductile iron can meet your toughest needs.

Price Factor ď‚ž Ductile

iron is neither too expensive nor too cheap. Ductile iron is costlier when compared to cast iron, because of extra spheroidizing agent alloys, and pig iron of high quality.

ď‚ž So, if

cast iron can meet your requirements and application, then you should not choose ductile iron.

Mechanical Properties  Ductile

iron has certain good mechanical properties. And that makes ductile iron castings superior to cast iron castings.

 Ductile

iron castings can resist impacts because they have good impact property in low temperature condition.

 If

ductile iron castings are subjecting to suitable heat treatment, their physical properties will only improve significantly.

Quality Control  Cast

iron is not subjected to too much quality check. It is checked for tensile strength only if you have special requirements.

 So, even

the traditional cupola furnace could produce this material very well.

 On

the other hand, ductile iron castings are always inspected for tensile strength, yield strength, elongation, hardness etc.

ď‚ž So, ductile

iron castings cannot be manufactured by anyone. The manufacturer should have enough experience.

ď‚ž He

should have the equipment to produce the castings and inspect the quality of the product in-house.

Physical Requirements ď‚ž Ductile

iron has excellent mechanical properties. However, cast iron is likely to get deformed during heating.

ď‚ž Having

said that, cast iron has good heat resistance. That is why cast iron is used in stove and boiler parts and not ductile iron.

ď‚ž Cast

iron has stability, so it is usually used for engineering and construction structures.

ď‚ž Ductile

iron castings are used for water pipes, engine parts such as crankshafts and connecting rods, and also for various brakes and steering components due to its durability, strength, and flexibility.

ď‚ž It

is not easy to differentiate cast iron and sg iron castings.

ď‚ž Only

an experienced technician will be able to distinguish both. Both have their advantages and disadvantages.

ď‚ž It

is important to realise that each is made for certain uses and purposes. Both provide the needed support that they are developed for.