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Mechanical Engineering
MEDIUM
ENGLISH
Mechanical Engineering
Cobalt in steel __________________?
A
improves wear resistance, cuttinability and toughness
Option A
B
refines grain size and produces les tendency to carburisation, improve corrosion and heat resistant proper ties
Option B
improves cutting ability and reduce hardenability
Correct answer
D
gives ductility, toughness, tensile strength and anti corrosion property:
Option D
Correct answer: C
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