Engineering Materials Questions

• The heat treatment process used for softening hardened steel is
• The lower critical temperature
• Which of the following material has maximum ductility?
• The percentage of carbon in cast iron varies from
• In full annealing, the hypo-eutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled
• A small percentage of boron is added to steel in order to
• Iron-carbon alloys containing 1.7 to 4.3% carbon are known as
• Specify the sequence correctly
• Malleable cast iron is produced
• Shock resisting steels should have
• The hardness of steel depends upon the
• When a low carbon steel is heated upto upper critical temperature
• Which of the following statement is correct?
• Which of the following statements are true for annealing of steels?
• Which of the following statement is true about brittle fracture?
• Beryllium bronze has
• Martensite has needle like structure and is magnetic.
• Which of the following material has nearly zero coefficient of expansion?
• The iron ore in the charge of blast furnace acts as an iron bearing mineral.
• Which of the following display properties similar to that of steel?