The Differences Between Ductile Iron and Gray Iron Castings
Gray iron and ductile iron are differentiated by the type and structure of the carbon present in them. The question, of course, is which one is proper for your project? Before we look at possible answers, let's see some of the key differences between the two cast irons.
Key Differences
Ductility
Tensile and Yield Strength
Impact
Thermal Conductivity
Vibration Dampening
Gray iron can be cast very easily and has good machineability. It is typically used in the following non-critical applications where strength is not the main required property:
Machinery bases for vibration dampening
Ductile Iron, because of the increased strength and ductility is used in more engineered applications:
Frames
Gear boxes
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