Principal alloying elements of cast tool alloys which have very high w – McqOptions

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1.	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» B. cobalt, chromium & nickel.

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