Ferrous Metal

What are ferrous metals primarily made of?

• Nickel

• Aluminum

• Copper

• Iron

What element is mixed with iron to make steel?

• Magnesium

• Silicon

• Carbon

• Zinc

Around what year did people start making iron from iron ore?

• 1800s

• 1900s

• 4000 BC

• 1000 BC

What is the maximum carbon content of steel?

• 4% to 6%

• 2% to 4%

• Less than 2%

• More than 6%

What type of steel is known for its resistance to corrosion?

• Carbon tool steel

• Mild steel

• High carbon steel

• Stainless steel

What is the carbon content of dead mild steel?

• 0.07%C to 0.15%C

• 0.15%C to 0.25%C

• 0.25%C to 0.55%C

• 0.55%C to 0.9%C

Which type of steel is used for cutting tools?

• High Carbon steels

• Mild steel

• Medium Carbon Steel

• Carbon tool steels

What phase is present in hyper-eutectoid steels?

• Cementite

• Martensite

• Ferrite

• Pearlite

What is the carbon content range for hypo-eutectoid steels?

• 0.83%C to 1.6%C

• 0.0008%C to < 0.83%C

• 0.9%C to 1.6%C

• 0.55%C to 0.9%C

When did the production of steel start?

• 1000 BC

• Early 1800s

• 1900s

• Late 1800s