7 - Performance and characteristics of metals - Ferrous

Question 1

Low carbon steel

Answer 1

Ductile, high tensile strength, tough, malleable, poor resistance to corrosion.

0.15-0.30% carbon content
Melting point: 1427*C

Nuts, bolts, washers, screws, car bodies

Question 2

Medium carbon steel

Answer 2

Harder than low carbon steel but less ductile and malleable (more brittle)

0.30-0.70% carbon content
Melting point: 1425-1540*C

Springs, gardening tools

Question 3

Cast iron

Answer 3

Hard outer layer but brittle core, good compressive strength

3.5% carbon
Melting point: 1149*C

Disc brakes, machine parts, engine blocks