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Flashcards in Metals (General) Deck (45):
1

Steel is made up of...

Iron and carbon

2

Percentage of carbon in mild steel

3

Properties of mild steel

Malleable, ductile

4

Percentage of carbon in medium steel

0.2-0.6%

5

Properties of medium steel

Tougher and harder than mild steel

6

Percentage of carbon in high carbon steel

0.6-1.5%

7

Properties of high-carbon steel

Tough and hard, but brittle

8

Use of mild steel

- car bodies
- machinery
- cables
- nails
- chains

9

Uses of medium steel

- steel girders
- rails

10

Uses of high carbon steel

- cutlery
- tools
- springs

11

Brass is made up of...

Copper and zinc

12

Bronze is made up of...

Copper and tin

13

Pewter is made up of...

Lead, tin, antimony

14

Solder is made up of...

Tin and lead

15

Stainless steel is made up of...

Iron, chromium, nickel

16

Duralumin is made up of...

Aluminium, copper

17

Types of steel

- stainless steel
- chromium steel
- high-speed steel
- manganese steel

18

Uses of brass

- electric plug

19

Uses of bronze

- propellers

20

Uses of pewter

- souvenir

21

Uses of solder

- joining electrical connections

22

Uses of stainless steel

- cutlery

23

Uses of duralumin

- aircraft bodies

24

Stainless steel is made up of...

Iron, carbon, chromium, nickel

25

Chromium steel is made up of...

Iron, carbon, chromium

26

High-speed steel is made up of...

Iron, carbon, tungsten, vanadium

27

Manganese steel is made up of...

Iron, carbon, manganese

28

Properties of stainless steel

- corrosion-resistant
- acid-resistant

29

Uses of stainless steel

- cutlery
- chemical plants

30

Properties of chromium steel

- hard
- corrosion-resistant

31

Uses of chromium steel

- ball bearings

32

Properties of high-speed steel

- very hard
- heat resistant

33

Uses of high-speed steel

- high-speed drills

34

Properties of manganese steel

- very high tensile strength

35

Uses of manganese steel

- rock-breaking machinery
- railway crossovers

36

Conditions for rusting

- water
- oxygen

37

State several rust-prevention methods:

- sacrificial protection
- coating iron in oil/grease/paint

38

Properties of zinc

- reactive metal
- bigger atomic radius than copper

39

Uses of zinc

- galvanisation
- making brass

40

Properties of copper

- good conductor

41

Uses of copper

- electrical wiring
- making alloys

42

Properties of aluminium

- corrosion-resistant
- low density
- strong

43

Uses of aluminium

- food container
- aircraft bodies

44

Reasons to recycle metals:

- finite resources
- discarded metals are not aesthetically appealing
- metal is non-biodegradable
- land is wasted as landfill
- cost of recycling metal is a fraction of the cost of extracting metal
- recycling adds job slots + increases employment

45

Characteristics of alloys

- hard+strong
- corrosion-resistant
- lustrous
- disorderly arrangement of atoms, preventing layers from sliding over one another