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DT > METALS > Flashcards

METALS Flashcards

1
Q

What are the non-ferrous metals?

A

Aluminium
Copper
Zinc
Silver
Gold
Titanium
Tin

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2
Q

What are the ferrous metals?

A

Low carbon steel
Medium carbon steel
Cast iron

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3
Q

What are the ferrous alloys?

A

Stainless steel
High speed steel (HSS)
Die steel (tool steel)

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4
Q

What are the non-ferrous alloys?

A

Bronze
Brass
Duralumin
Pewter

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5
Q

Describe aluminium

A

lightweight, ductile, malleable, corrosion resistant, electrical and thermal conductor, can be metal inert gas (MIG) and tungsten inert gas (TIG) heat welded

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6
Q

Uses of aluminium?

A

drinks cans
aircraft bodies
bike frames
window frames
packaging
baking foil

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7
Q

Describe copper

A

ductile, malleable, tough, corrosion resistant, good electrical and thermal conductor, can be soldered and brazed

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8
Q

Uses of copper?

A

electrical wire
printed electrical circuits
water pipes
hot water tanks
central heating pipes

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9
Q

Describe zinc

A

low melting point, good corrosion resistance

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10
Q

Uses of zinc?

A

galvanizing steel as protective coating for dustbins, buckets, farm gates
intricate die castings

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11
Q

Describe silver

A

malleable, ductile corrosion resistant, can be soldered

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12
Q

Uses of silver?

A

jewellery
cutlery
used for plating other materials

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13
Q

Describe gold

A

malleable, ductile, corrosion resistant, can be soldered

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14
Q

Uses of gold?

A

jewellery
electronic components
connectors
switch components

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15
Q

Describe titanium

A

hard, similar strength to steels but more lightweight, high resistance to corrosion

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16
Q

Uses of titanium?

A

joint replacements
tooth implants
spectacle frames
aircraft
spacecraft
golf clubs
bicycles
ship hulls

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17
Q

Describe tin

A

ductile, malleable, low melting point, corrosion resistant

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18
Q

Uses of tin?

A

soft solder
coatings for food cans
rarely used in pure form

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19
Q

Describe low carbon steel

A

ductile, high tensile strength, tough, malleable, poor resistance to corrosion

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20
Q

What percent of low carbon steel is carbon?

A

0.15-0.30%

21
Q

Uses of low carbon steel?

A

nuts
bolts
washers
screws
car bodies

22
Q

Describe medium carbon steel

A

harder than low carbon steel but less ductile, malleable, tough

23
Q

What percent of medium carbon steel is carbon?

A

0.30-0.70%

24
Q

Uses of medium carbon steel?

A

springs
gardening tools such as trowels and forks

25
Q

Describe cast iron

A

Hard outer skin but brittle core, good under compression

26
Q

What percent of cast iron is carbon?

A

3.5%

27
Q

Uses of cast iron?

A

disc brakes
machine parts
engine blocks
sheet furniture

28
Q

Describe stainless steel

A

tough, hard, corrosion resistant

29
Q

Uses of stainless steel?

A

sinks
kitchenware
cutlery

30
Q

What elements are in stainless steel and what percent of the material do they make up?

A

18% chrome
8% nickel

31
Q

Describe high speed steel

A

hard, tough, high level of resistance to frictional heat

32
Q

Uses of high speed steel?

A

tools blades
drill bits
milling cutters
router bits

33
Q

What elements are in high speed steel and what percent of the material do they make up?

A

18% tungsten
4% chromium
1% vanadium
0.5-0.8% carbon

34
Q

Describe die steel

A

hard, tough

35
Q

Uses of die steel?

A

blanking punches and dies
extruder dies
fine press tools

36
Q

Describe bronze

A

tough, corrosion resistant, can be cast

37
Q

Uses of bronze?

A

statues
coins
bearings

38
Q

What elements are in bronze and what percent of the material do they make up?

A

90% copper
10% tin

39
Q

Describe brass

A

corrosion resistant, good electrical and thermal conductor, low melting point, casts well

40
Q

Uses of brass?

A

boat fittings
door furniture
cast valves and taps
ornaments

41
Q

What elements are in brass and what percent of the material do they make up?

A

65% copper
35% zinc

42
Q

Describe duralumin

A

equivalent strength properties to low carbon steel but more lightweight, ductile, becomes harder as it is worked

43
Q

Uses of duralumin?

A

aircraft parts
vehicle parts

44
Q

What elements are in duralumin and what percent of the material do they make up?

A

4% copper
1% magnesium and manganese

45
Q

Describe pewter

A

malleable, low melting point, casts well

46
Q

Uses of pewter?

A

flasks
goblets
photo frames
decorative items
candlesticks
sports trophies

47
Q

What elements are in pewter and what percent of the material do they make up?

A

85-99% tin
remainder of material consisting of copper and antimony

48
Q

What are the stock forms of metals?

A

sheet
plate
bar
tube
structural - angular shapes such as H beams, L beams, I beams, tee bar and channel

DT (10 decks)

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