Nonmetallic inclusions in steel are mainly oxidic inclusions. sulphidi
c inclusions and titanium (carbo)-nitride inclusions. The amount of no
nmetallic inclusions is a measure of the degree of cleanliness of the
steel. Macroscopic cleanliness. microscopic cleanliness. Effect of non
metallic inclusions on material properties. Effect of macroinclusions
and microscopic inclusions. Examples of the effect of inclusions on th
e service properties of steel.