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.Management Sciences
A. 80% or more iron
B. 50% or more iron
C. alloying elements like chromium, tungsten nickel and copper
D. elements like phosphorus, sulphur and silicon in varying quantities
E. high quantities of sulphur
Related Mcqs:
- Iron is ____________________?
- A. paramagnetic B. ferromagnetic C. ferroelectric D. dielectric E. none of the above...
- Process of austempering results in__________________?
- A. formation of bainite structure B. carburised structure C. martenistic structure D. lamellar layers of carbide distributed throughout the structure E. relieving of stresses throughout a component...
- The most effective inhibitor of grain growth, when added in small quantities is__________________?
- A. carbon B. vanadium C. manganese D. cobalt E. copper...
- Nickel in steel___________________?
- A. improves wear resistance, cutting ability and toughness B. refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant proper¬ties C. improves cutting ability and reduces hardenability D. gives ductility, toughness, tensile strength and anticorrosion properties E. none of the above...
- Addition of copper to aluminium results in_____________________?
- A. improvement of casting characteristics B. improvement of corrosion resistance C. one of the best known age and precipitation-hardening systems D. improving machinability E. none of the above...
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