Question

Which of the following elements strongly promote graphitization in Cast Iron?

• A. Sulphur
• B. Manganese
• C. Silicon
• D. Vanadium

Hint:

When making cast iron, consider adding silicon to promote graphitization, which improves machinability and material properties.

Answer 1

The Correct Option is C

Silicon is the element that strongly promotes graphitization in cast iron. Graphitization refers to the process in which carbon forms graphite flakes in cast iron, improving its machinability and making it more suitable for various applications. Silicon plays a critical role in controlling the carbon content and promoting the formation of graphite structures within the iron. Manganese, sulphur, and vanadium also affect cast iron properties, but they do not significantly promote graphitization like silicon does.