Which type of cast iron undergoes a transformation as a result of a long heat-treating process to reduce hardness?
A) gray
B) white
C) malleable
D) nodular

Question

​Which type of cast iron undergoes a transformation as a result of a long heat-treating process to reduce hardness?
A) ​gray
B) ​white
C) ​malleable
D) ​nodular

Quizplus · Accepted Answer

Malleable cast iron undergoes a heat treatment process known as annealing which involves heating the iron for a long time at a high temperature and then slowly cooling it down. This process transforms the carbon in the iron into graphite, reducing the iron's hardness and making it more ductile and easy to shape. Gray, white, and nodular cast iron do not undergo this transformation during heat treatment.

​Which Type of Cast Iron Undergoes a Transformation as a Result

Which Type of Cast Iron Undergoes a Transformation as a Result