Q
Cobalt in steel __________________?
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A
A. Improves wear resistance, cuttinability and toughness
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B
B. Refines grain size and produces les tendency to carburisation, improve corrosion and heat resistant proper ties
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C
C. Improves cutting ability and reduce hardenability
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D
D. Gives ductility, toughness, tensile strength and anti corrosion property:
Correct Answer:
C. C. Improves cutting ability and reduce hardenability
