Galvanizing Engineer Interview Question:

Tell us how will you identify cast iron, mild steel and high carbon steel?

Submitted by: Muhammad

By spark: When a metal is held against grinding wheel it gives sparks. Cast iron gives thick and short sparks. Mild steel gives medium and dense sparks and High carbon steel gives long and dense sparks.
By hammering : When a blow of hammer is given with these metals there will be a deep spot on mild steel, less deep spot on high carbon steel and cast iron may break.
Submitted by: Muhammad