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A Level DT > 4.1 Stock Frorms of Metals > Flashcards

4.1 Stock Frorms of Metals Flashcards

1
Q

Give me some examples of ferrous metals

A
  • Low carbon steel
  • Medium carbon steel
  • White cast iron
  • Grey cast iron
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1
Q

What are ferrous metals?

A

Metals that contain iron, they are magnetic and can rust

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2
Q

What are non-ferrous metals?

A

Metals that do not contain iron, are non-magnetic and don’t rust

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3
Q

Give me some examples of non-ferrous metals

A
  • Aluminium
  • Copper
  • Silver
  • Gold
  • Titanium
  • Tin
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4
Q

What are alloys?

A

Alloys are a combination of two or more metals (or two or more elements, one of which must be a metal)

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5
Q

What are the characteristics of Low-carbon steel?

A

It’s malleable, ductile and relatively inexpensive compared to other metals

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6
Q

What are some applications for Low-carbon steel?

A

Nuts, bolts and automotive parts

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7
Q

What are the characteristics of Medium-carbon steel?

A

It is less ductile than low-carbon steel, it’s hard, malleable, tough and with good tensile strength

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8
Q

What are some applications for Medium-carbon steel?

A

Springs, gears, rail tracks and machined parts

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9
Q

What are the characteristics of Grey cast iron?

A

It distributes heat evenly, it’s very hard, and it has good resistance to oxidation, however, it’s brittle

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10
Q

What are some applications for Grey cast iron?

A

Radiators, cookware and stoves

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11
Q

What are the characteristics of White cast iron?

A

It has excellent resistance to abrasion, it’s hard and brittle but has a greater tensile strength (and less carbon) than grey cast iron.

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12
Q

What are some applications for White cast iron?

A

Extrusion nozzles, dies, stone crushers and industrial rollers

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13
Q

What are the characteristics of Aluminium?

A

It has an excellent strength-to-weight ratio; it’s soft, malleable and has a natural oxide layer which helps prevent corrosion

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14
Q

What are some applications for Aluminium?

A

Window frames, aeroplane parts, bicycles

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15
Q

What are the characteristics of Copper?

A

It’s malleable and extremely ductile, it’s an excellent conductor of electricity and heat

16
Q

What are some applications for Copper?

A

Electrical wire, motors, hot water pipes and pans

17
Q

What are the characteristics of Zinc?

A

It’s ductile and easily worked, it has a layer of oxide giving it excellent corrosion resistance

18
Q

What are some applications for Zinc?

A

As a sacrificial anode, for galvanizing, roofing material and batteries

19
Q

What are the characteristics of Silver?

A

It’s ductile, and it’s the best electric and thermal insulator

20
Q

What are some applications for Silver?

A

Jewellery, electronics, mirrors

21
Q

What are the characteristics of Gold?

A

It’s one of the least reactive metals, It’s very ductile and malleable and it doesn’t tarnish

22
Q

What are some applications for Gold?

A

Jewellery, electronics and dentistry

23
Q

What are the characteristics of Titanium?

A

It’s a low-density, durable metal with a high melting point.
It’s highly resistant to corrosion and has a great strength-to-weight ratio

24
Q

What are some applications for Titanium?

A

Implants, golf clubs, jewellery and aviation components

25
Q

What are the characteristics of Tin?

A

It’s soft and malleable and it has good corrosion resistance

26
Q

What are some applications for Tin?

A

Solder for electronics

27
Q

What are Ferrous Alloys?

A

Alloys that contain iron, carbon and one or more other element

28
Q

Give me some examples of Ferrous Alloys

A
  • Stainless steel
  • Die steel
  • High-speed steel
29
Q

What are the characteristics of Stainless steel?

A

It’s very hard, has good impact resistance and corrosion resistance

30
Q

What are some applications for Stainless steel?

A

Medical and catering equipment, and construction

31
Q

What are the characteristics of Die steel?

A

It is hard, tough and it has a natural oxide layer which helps prevent corrosion,

32
Q

What are some applications for Die steel?

A

Blancking punches and dies, extruder dies, fine press tools

33
Q

What are the characteristics of High-speed steel?

A

It is hard, tough and has a high resistance to frictional heat.

34
Q

What are some applications for High-speed steel?

A

Tool blades, drill bits, milling cutters, kitchen knifes

35
Q

What makes brass suitable for use in a trumpet?

A
  • It is malleable, easy to shape and machine, allowing for intricate designs that contribute to the trumpet’s unique sound and structure
  • Brass has good corrosion resistance, as it is exposed to moisture from breath

A Level DT (14 decks)

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