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Cobalt in steel __________________?
Mechanical Engineeringmedium
Aimproves wear resistance, cuttinability and toughness
Brefines grain size and produces les tendency to carburisation, improve corrosion and heat resistant proper ties
improves cutting ability and reduce hardenability
Dgives ductility, toughness, tensile strength and anti corrosion property: E. none of the above
Correct Answer: C. improves cutting ability and reduce hardenability
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