Selection of appropriate cast iron for engineering applications

Which of the following is the primary factor in selecting cast iron for engineering applications?

• Cost

• Mechanical properties

• Appearance

• Availability

Gray cast iron is best suited for which type of applications?

• High tensile strength applications

• Shock and vibration damping applications

• Aerospace applications

• Electrical insulation applications

Which type of cast iron has excellent wear resistance and is commonly used in machine tool beds?

• Ductile iron

• White cast iron

• Gray cast iron

• Malleable iron

White cast iron is typically used for:

• Railway brake shoes

• Automotive engine blocks

• Pump housings

• Pressure vessels

Which of the following is the primary characteristic of ductile iron?

• High brittleness

• High tensile strength and ductility

• Low hardness

• Low wear resistance

Malleable cast iron is produced by:

• Rapid cooling of molten iron

• Heat treatment of white cast iron

• Adding nickel to gray iron

• Increasing carbon content

Which type of cast iron is most suitable for applications requiring high wear resistance and hardness?

• Gray cast iron

• White cast iron

• Ductile iron

• Malleable iron

Which cast iron is widely used for gears, crankshafts, and automotive components due to its high strength and toughness?

• Gray cast iron

• Ductile iron

• White cast iron

• Chilled cast iron

Chilled cast iron is produced by:

• Adding magnesium to molten iron

• Rapid cooling of gray cast iron

• Annealing white cast iron

• Mixing iron with ceramic materials

Which of the following elements improves the machinability of cast iron?

• Carbon

• Sulfur

• Silicon

• Manganese