MATERIALS AND CONSTRUCTION QUIZ

Molybdenum stainless steel

18/8 stainless steel

High silicon iron (14% Si)

Mild steel

Aluminium

Stainles steel

Copper

High silicon (14%) iron

All of these

Cutting ability

Wear resistance

Corrosion resistance

16-13% Cr 10-14% Ni and 2-3% Mo

2-4% Cr, 22% NI and 2-4% Mo

20-22% Cr, and 8-10% Ni

None of these

Reduces its fluidity

Increases the formation of graphite

Increases the contraction of the metal

Suppresses the decomposition of Fe₃ C

50

80

90

70

Quartz

Topaz

Corrundum

Flourite

2

6

4

8

Refractory blocks

Cast iron

Mild steel

Stainless steel

Do not have good resilience properties

Are used for leaf and coiled springs

Is tempered at 850°C

Do not require heat treatment for any of its applications