Metals EXAM 📘

Question 1

Ferrous metals

Answer 1

Contain iron

Question 2

Steels

Answer 2

Alloys of carbon and iron
Classified by their carbon content 
Mild 0.25%
Medium 0.25-0.5%
High 0.5-1.5%

Question 3

Cast iron

Answer 3

Heavy
Cost effective
Rigid and strong
Machine beds, engine castings

Question 4

Aluminium

Answer 4

Non ferrous 
Corrosion resistant 
Low density 
Strengthened with an alloy
Construction, door handles

Question 5

Zinc

Answer 5

Used as a coating on steel GALVANISING

Non ferrous

Question 6

Copper

Answer 6

Pure copper can be beaten into shape
Thermal conductor and corrosion resistant
Non ferrous

Question 7

Tin

Answer 7

Rarely used by itself
Eg. Cans are made from mild steel but they have a very thin coat of tin
Non ferrous

Question 8

Tungsten

Answer 8

chemical element
One of the toughest materials found in nature
Very High melting point
extremely durable and resistant to corrosion
Used for saw blades and drilling tips for concrete
Non ferrous

Question 9

Brass

Answer 9

An alloy of copper and zinc
Suitable for decorative work and where little friction is required such as mechanisms like locks, gears, doorhandles, plumbing etc.
Non ferrous

Question 10

Bronze

Answer 10

And alloy with a gold brown colour that consist primarily of copper and other ingredients
Used for electrical products, bearings etc
Non ferrous