1.7 Performance Characteristics of Metals Flashcards

1
Q

Give the 5 stock forms of metals

A
  • Sheet
  • Plate
  • Bar
  • Tube
  • Structural angular
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2
Q

Define non-ferrous and give three examples

A

A metal that does not contain iron, it’s not magnetic and does not rust

  • Aluminium
  • Copper
  • Zinc
  • Silver
  • Gold
  • Titanium
  • Tin
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3
Q

State three properties/characteristics of aluminium

A
  • Lightweight
  • Corrosion-resistant
  • Ductile
  • Malleable
  • Can be welded
  • Electrical and thermal conductor
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4
Q

State two uses of aluminium

A
  • Aircraft bodies
  • Drink cans
  • Bike frames
  • Packaging
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5
Q

State three properties/characteristics of copper

A
  • Electrical and thermal conductor
  • Ductile
  • Malleable
  • Tough
  • Corrosion-resistant
  • Can be soldered and brazed
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6
Q

State two uses of copper

A
  • Electric wire
  • Printed electrical circuits
  • Waterpipes
  • Hot water tanks
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7
Q

State two properties/characteristics of zinc

A
  • low melting point

- Good corrosion restistant

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8
Q

State two uses of zinc

A
  • Galvanising steel as a protective coating for dustbins
  • Buckets
  • Farm gates
  • Intricate die casting
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9
Q

State three properties/characteristics of sliver

A
  • Corrosion-resistant
  • Malleable
  • Ductile
  • Can be soldered
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10
Q

State two uses of silver

A
  • Cutlery
  • Jewellery
  • Used for plating other materials
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11
Q

State three properties/characteristics of gold

A
  • Corrosion-resistant
  • Malleable
  • Ductile
  • Can be soldered
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12
Q

State two uses of gold

A
  • Jewellery
  • Connectors
  • Electric components
  • Switch components
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13
Q

State three properties/characteristics of titanium

A
  • Lightweight
  • Hard
  • High melting point
  • High resistance to corrosion
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14
Q

State two uses of titanium

A
  • Aircraft and spacecraft
  • Tooth implants
  • Golf clubs
  • Ships hulls
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15
Q

State three properties/characteristics of tin

A
  • Corrosion-resistant
  • Malleable
  • Ductile
  • Low melting point
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16
Q

State two uses of tin

A
  • Coating for food cans
  • Soft solder

It’s rarely used in pure form

17
Q

Define a ferrous metal and give three examples

A

A metal that contains mostly iron and carbon. Ferrous metals are magnetic and will rust

  • Low carbon steel
  • Medium carbon steel
  • Cast iron
18
Q

State three properties/characteristics of low carbon steel

A
  • Malleable
  • Poor resistance to corrosion
  • High tensile strength
  • Ductile
  • Low melting point
19
Q

State two uses of low carbon steel

A
  • Nuts, bolts, screws
  • Car bodies
  • Washers
20
Q

State three properties/characteristics of medium carbon steel

A
  • Hard
  • Tough
  • Less ductile than low carbon steel
  • Malleable
21
Q

State two uses of medium carbon steel

A
  • Garden tools

- Springs

22
Q

State three properties/characteristics of cast iron

A
  • Brittle core
  • Hard outer skin
  • Good under compression
23
Q

State two uses of cast iron

A
  • Engine blocks
  • Disc brakes
  • Machine parts
24
Q

Define non-ferrous alloys and give three examples

A

A mixture of two or more metals none of which contain iron

  • Bronze
  • Brass
  • Duralumin
  • Pewter
25
Q

State three properties/characteristics of bronze

A
  • Tough
  • Corrosion-resistant
  • Can be cast

90% copper, 10% tin

26
Q

State two uses of bronze

A
  • Coins
  • Statutes
  • Bearings
27
Q

State three properties/characteristics of brass

A
  • Corrosion-resistant
  • Electrical and thermal conductor
  • Cast well
  • Ductile

65% copper, 35% zinc

28
Q

State two uses of brass

A
  • Boat fittings
  • Ornaments
  • Cast values and taps
  • Door furniture
29
Q

State three properties/characteristics of duralumin

A
  • Lightweight
  • Equivalent strength to low carbon steel
  • Becomes hard as worked
  • Ductile

Aluminum with 4% copper, 1% magnesium, and manganese

30
Q

State two uses of duralumin

A
  • Aircraft parts

- Vehicle parts

31
Q

State three properties/characteristics of pewter

A
  • Malleable
  • Casts well
  • Low melting point

85-99% tin with the remainder consisting of copper and antimony

32
Q

State two uses of pewter

A
  • Sports trophies
  • Flasks
  • Decorative items, such as photo frames and candlesticks
33
Q

Define ferrous alloys and give three examples

A

A mixture of two or more metals, at least one of which contains iron

  • Stainless steel
  • High-speed steel (HSS)
  • Die steel (tool steel)
34
Q

State three properties/characteristics of stainless steel

A
  • Corrosion-resistant
  • Hard
  • Tough
  • High melting point

18% chrome, 8% nickel

35
Q

State two uses of stainless steel

A
  • Cutlery
  • Kitchenware
  • Sinks
36
Q

State three properties/characteristics of high speed steel (HSS)

A
  • Hard
  • Tough
  • High level of resistance to friction heat

18% turgsten, 4% chromium, 1% vanadium, 0.5-0.8% carbon

37
Q

State two uses of high speed steel (HSS)

A
  • Drill bits
  • Tool blades
  • Milling cutters
  • Routing bits
38
Q

State two properties/characteristics of die steel (tool steel)

A
  • Hard

- Tough

39
Q

State two uses of die steel (tool steel)

A
  • Fine press tools
  • Blanking punches and dies
  • Extruder dies