Question

Malleable cast iron is obtained by controlled heat treatment of

• A. Grey cast iron
• B. Nodular cast iron
• C. White cast iron
• D. Flake graphite cast iron

Hint:

Malleable cast iron is more ductile than white cast iron, and it is often used for making parts that need to withstand shock and wear.

Answer 1

The Correct Option is B

Malleable cast iron is made by annealing white cast iron, which is a brittle form of cast iron, to convert the cementite phase into a more ductile structure.