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

Molybdenum, tungsten & chromium

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

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.	Molybdenum, tungsten & chromium
D.	Cobalt, zirconium & molybdenum
Answer» B. Cobalt, chromium & nickel

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

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