Principal alloying elements of cast tool alloys which have very high...

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Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are

A. Cobalt, chromium & tungsten

B. Cobalt, chromium & nickel

C. Molybdenun, tungsten & chromium

D. Cobalt, zirconium & molybdenum

Answer: Option A

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