This rather short post will deal with the properties of Ductile iron compiled for ready-made reference:
Ductile Iron has a close-grained structure that provides excellent wear resistance, good machinability and ability to withstand pneumatic or hydraulic pressures.
Strength & Ductility:
When it comes to strength and durability, most SG (Ductile) iron can be compared with low alloy/free cutting steels.
SG (Ductile) iron is completely free from most defects usually associated with other production materials or methods.
SG Iron bars are perfect for applications in which heat dissipation is imperative.
Lower residual stress:
SG (Ductile) iron is characterised by lower residual stress, and majority stresses are released when subjected to heat treatment.
Improved dimensional stability:
It has improved dimensional stability because of the low residual stresses that occur during the slow unrestricted cooling followed by an annealing process. Therefore, SG Iron is perfect for applications that require machining and involves high pressure.
Improved bearing properties:
There is a fine dampening of both vibration as well as noise in flake and nodular because of the graphite present in the structure.
Better Corrosion Resistance:
Ductile iron gives high corrosion resistance compared to steel and in most cases, better than any other non-ferrous materials.
Enhanced wear resistance:
Ductile Iron has comparatively improved tool wear resistance.
High Fatigue strength:
Ductile Iron known for its absence of defects as well as the cohesive structure in comparison to sand cast products makes it a perfect candidate for applications that require greater levels of fatigue.
Ductile Iron has improved physical properties compared to most materials, as seen above, which makes it ideal for most industrial applications.