What is the correct answer?


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

Correct Answer :

A. Cobalt, chromium & tungsten

Related Questions

Normalising of a casting does not __________ is the trade name assigned to a nonferrous cast alloy composed… __________ can replace tungsten in high speed steel. Lap joints are preferred over butt joints in soldering/brazing, because… __________ pipe is the most suitable for carrying sanitary drainage. Out of the following, which will fracture most readity, when hit with… Which of the following rays has the least wavelength? Cobalt - 60 is used as a source of __________ in medical therapy & industrial… Which of the following if present in iron ore, enhances its value? All of the following alloying elements of steel increases hardness but… While the bin cards are used in the effective stores management, the queuing… A highly elastic material is deformed least on loading and retains its… Which of the following does not discharge the dust collected as a dry… With increasing carbon percent in steel beyond 0.8%, its ultimate tensile… Which of the following is a boiler accessory i.e., not a boiler mounting? Vernier calipers cannot be used to measure the __________ joint is usually used for joining cast iron pipes mostly used… Probability of cavitation occuring becomes very high, when the local __________… Metal cutting by oxy-acetylene flame is accomplished by the __________… Hydro-cyclone is a The underground well of a biogas plant is called the Fire in fuel gas pipelines is extinguished most effectively by Out of the following, the best material capable of withstanding shock… The amount of different substances produced, when the same quantity of… The property of material, by which a given amount of energy is absorbed… A particle is settling in a liquid under Stokesian conditions. The free… Pick out the wrong statement. In a forced draft cooling tower, water is cooled from 95 to 80°F by… An ideal material for making cooking vessels should have Case hardening of a material is