Quiz on Ferrous Metals and Their Properties

What is the maximum carbon content in low carbon steel?

• 1.70 wt.% C

• 0.25 wt.% C

• 2.14 wt.% C

• 0.60 wt.% C

Which phase is stable below 914°C in the Fe-C equilibrium diagram?

• Pearlite

• Ferrite

• Austenite

• Cementite

What is the primary characteristic of high carbon steel?

• Unresponsive to heat treatment

• Very good wear resistance

• High ductility

• Low strength

What type of iron is characterized by a white appearance and is extremely hard?

• White Iron

• Gray Iron

• Malleable Iron

• Ductile Iron

What is the primary alloying element in stainless steel?

• Copper

• Chromium

• Nickel

• Manganese

Which microstructure occurs at the eutectoid point in the Fe-C diagram?

• Ferrite

• Austenite

• Pearlite

• Cementite

What is the carbon content range for cast iron?

• 0.60-1.70 wt.% C

• 0.04-1.7 wt.% C

• 1.7-4.5 wt.% C

• 0.25-0.60 wt.% C

Which of the following is a characteristic of medium carbon steel?

• High ductility

• Can be heat-treated

• Unresponsive to heat treatment

• Contains less than 0.25% C

What is the primary purpose of heat treatment in carbon steels?

• To improve corrosion resistance

• To reduce weight

• To enhance mechanical properties

• To increase carbon content

What is the effect of adding silicon to cast iron?

• Decreases melting point

• Increases brittleness

• Promotes graphite formation

• Reduces strength