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Mechanical Engineering · Q43

Engineering Materials

Engineering and GATE · Mechanical Engineering · question 43

Q43

Sulphur in steel

A.
Acts as deoxidiser
B.
Reduces the grain size
C.
Decreases tensile strength and hardness
D.
Lowers the toughness and transverse ductility
Answer

Answer: Option D

Solution

Answer: Option D
Solution:
sulfur is normally regarded as an impurity and has an adverse effect on impact properties when a steel is high in sulphur and low in manganese.
Sulphur improves machinability but lowers transverse ductility and notched impact toughness and has little effects on the longitudinal mechanical properties
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