1836Mechanical EngineeringMedium
Cobalt in steel ________?
Arefines grain size and produces les tendency to carburisation, improve corrosion and heat resistant proper ties
Bgives ductility, toughness, tensile strength and anti corrosion property:
Cimproves cutting ability and reduce hardenability
Dimproves wear resistance, cuttinability and toughness
Enone of the above
Correct answer
C. improves cutting ability and reduce hardenability
Explanation
The correct answer is improves cutting ability and reduce hardenability.