Question

If the iron surface contains graphite, it is known as ____.
a. Alloy cast iron.
b. White iron.
c. Grey iron.
d. Spheroidal graphite.

Answer 1

Grey iron is the term for iron surfaces containing graphite.

• Grey iron is the correct term for iron surfaces containing graphite. This type of iron is called grey iron due to the presence of graphite flakes in its structure. Grey iron is commonly used in various industrial applications due to its properties.