A. Nickel, cobalt & chromium
B. Tungsten, chromium & cobalt
C. Manganese, chromium & cobalt
D. Tungsten, molybdenum & nickel
Related Mcqs:
- Which of the following alloying elements is present in maximum percentage in high speed steel ?
A. Molybdenum
B. Chromium
C. Tungsten
D. Vanadium - 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 - All of the following alloying elements of steel increases hardness but sacrifice ductility, except________________?
A. Nickel
B. Vanadium
C. Molybdenum
D. Chromium - Nickel and ______________ are the alloying element added in steel to increase its toughness?
A. Molybdenum
B. Chromium
C. Vanadium
D. Silicon - Which of the following is not a principal alloying element for the structural steel ?
A. Molybdenum
B. Nickel
C. Manganese
D. Chromium - Constituents of stellite are ____________________?
A. Zinc, copper & nickel
B. Cobalt, chromium & tungsten
C. Zinc, aluminium & nickel
D. Nickel, cobalt & vanadium - High speed steel tools retain their hardness upto a temperature of __________________ °C?
A. 500
B. 750
C. 900
D. 1100 - _________________ can replace tungsten in high speed steel ?
A. Chromium
B. Vanadium
C. Cobalt
D. Molybdenum - What is the percentage of chromium in 18-4-1 high speed steel ?
A. 1
B. 4
C. 18
D. 23 - Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________?
A. Tensile strength
B. Compressive strength
C. Young’s modulus
D. Thermal co-efficient of expansion
