Engineering Materials Questions

• Which of the following iron exist between 910° C and 1403° C?
• In low carbon steels, __________ raises the yield point and improves the resistance to atmospheric corrosion.
• The ability of a material to resist fracture due to high impact loads, is called
• Iron-carbon alloys containing carbon __________ 4.3% are known as hyper-eutectic cast irons.
• An alloy of copper, tin and zinc is known as
• The charge of the blast furnace consists of
• A steel with carbon __________ is known as hypo-eutectoid steel.
• The presence of hydrogen in steel causes
• The stiffness is the ability of a material to resist deformation under stress.
• Y-alloy contains
• Normalising of steel is done to
• Duralumin has better strength than Y-alloy at high temperature.
• Duralumin contains
• The steel scrap added in the charge of cupola controls the grade of cast iron produced.
• A steel containing 12 to 14% chromium and 0.12 to 0.35% carbon is called martensitic stainless steel.
• White cast iron has
• Polyvinylchloride (PVC) is a __________ material.
• Tin base white metals are used where the bearings are subjected to
• Chromium when added to steel __________ the tensile strength.
• The steel produced by cementation process is known as __________ steel.