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Answer: Option 4
There are several properties about cast iron is listed below: • It has three to five times more compression strength compared to steel • It has good machinability (gray cast iron) • It has excellent anti-vibration (or damping) properties hence it is used to make machine frames • It has good Sensibility • It has excellent resistance to wear • It has constant Mechanical properties between 20 to 350 degree Celsius • It has very low notch sensitivity • It has Low stress concentration • It bears Low cost • It is Durability • It has Resistance to deformation
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