Engineering Materials
The stiffness is the ability of a material to resist

None of these
Deformation under stress
Externally applied forces with breakdown or yielding
Fracture due to high impact loads

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Engineering Materials
Tungsten in steel

Improves wear resistance, cutting ability and toughness
Gives ductility, toughness, tensile strength and anti-corrosion properties
Improves cutting ability and reduces hardenability
Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties

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