engineering materials 4 metals

What are ferrous metals primarily made of?

• Carbon

• Iron

• Aluminum

• Copper

What is iron alloy known as when mixed with a small amount of carbon?

• Cast iron

• Stainless steel

• Steel

• Alloy steel

When did the production of steel start?

• About 4000 BC

• In the 1800s

• About 1000 BC

• During the 1900s

What is cast iron?

• Iron with small amounts of carbon, less than 2%

• Iron with greater quantities of carbon

• Iron with another element added to give special qualities

• Iron that is resistant to corrosion

What are stainless steels?

• Steels with less than 2% carbon

• Steels with greater quantities of carbon

• Special steels containing elements that promote resistance to corrosion

• Steels that are manufactured in large quantities

What is the carbon content range for 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 when high strengths or good wear resistance are required?

• Dead mild steel

• Mild steel

• Medium Carbon Steel

• High Carbon steel

What is the characteristic of Carbon tool steels?

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Hypo-eutectoid steels have a carbon content range of:

• 0.07%C to 0.15%C

• 0.15%C to 0.25%C

• 0.008%C to 0.83%C

• 0.99%C to 1.6%C

What does the increase in carbon content in hypo-eutectoid steels lead to?

• Decrease in the amount of pearlite

• Increase in the amount of ferrite

• Increase in the amount of pearlite

• No change in the composition