Alloy Cast Iron: The cast irons discussed above are called plain cast irons. The alloy cast iron is produced by adding alloying elements like nickel, chromium, molybdenum, copper, silicon and magnanese.
These alloying elements give more strength and result in the improvement of properties. The alloy cast iron has special properties like increased strength, high wear resistance, corrosion resistance or heat resistance.
The alloy cast irons are extensively used for automobile parts like cylinders, pistons, piston rings, crank cases, brake drums, parts of crushing and grinding machinery etc