Question

13. Which cast iron cannot be
welded? *
A: Grey cast iron
B: White cast iron
C: Nodular cast iron
D: Malleable cast iron​

Answer 1

Answer:

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Explanation:

By reducing the carbon and silicon content and cooling rapidly, much of the carbon is retained in the form of iron carbide without graphite flakes. However, iron carbide, or cementite, is extremely hard and brittle and these castings are used where high hardness and wear resistance is needed.