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

Cobalt, chromium & tungsten
Molybdenun, tungsten & chromium
Cobalt, zirconium & molybdenum
Cobalt, chromium & nickel

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Chemical Engineering Basics
Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means

Disposing off machine/property, which is no longer useful in the present scenerio
Writing off the obsolete machine/ property
Mortgaging the obsolete machine/property
Disposing off a machine/property on as is where is basis

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