Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?
A. Sulphur
B. Phosphorus
C. Manganese
D. Silicon
Answer: Option C
Solution(By Examveda Team)
It is a mild deoxidant acting as a cleanser taking the sulphur and oxygen out of the melt into the slag.It increases the harden ability and tensile strength but decreases ductility.
It combines with sulphur to form globular manganese sulphides, essential in free cutting steels for good machinability.
Related Questions on Engineering Materials
Manganese is added in low carbon steel to
A. Make the steel tougher and harder
B. Raise the yield point
C. Make the steel ductile and of good bending qualities
D. All of the above
The elastic stress strain behavior of rubber is
A. Linear
B. Nonlinear
C. Plastic
D. No fixed relationship
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