unit 4

Question 1

ferrous metals

Answer 1

contain iron,magnetic and rust

Question 2

non ferrous

Answer 2

don’t contain iron,non magnetic and don’t rust

Question 3

alloys

Answer 3

combination of 2 or more metals/elements one of which is a metal

Question 4

low carbon steel
ferrous

Answer 4

malleable,ductile,cheap compared to other metals.giid tensile strength,easy to weld
used in nuts and bolts

Question 5

medium carbon steel
ferrous

Answer 5

less ductile than low carbon steel,hard,malleable with good tensile strength
used in springs,gears,rail tracks

Question 6

grey cast iron
ferrous

Answer 6

distributed heat evenly, very hard and giid resistance bro oxidation.it is brittle and has low impact resistance.
used in radiators cookware and stoves

Question 7

white cast iron
ferrous

Answer 7

resistance to absorption, hard and brittle but has greater tensile strength.can be cast with little shrinkage.
used in nozzles,dies,stone crushers

Question 8

aluminium
non ferrous

Answer 8

most abundant metal in earths crust.
good strength to weight ratio,soft,malleable,prevents corrosion
used in window frames

Question 9

copper
non ferrous

Answer 9

malleable,ductile,conducts heat and electricity
used in electrical wire,motors

Question 10

zinc
non ferrous

Answer 10

often alloyed,ductile,easy to work with,corrossion resistance
used in roofing materials, batteries

Question 11

silver
non ferrous

Answer 11

electrical/thermal conductor, ductile
used in jewellery,electronics,mirrors

Question 12

gold
non ferrous

Answer 12

one off the least reactive metals, very ductile,malleable,doesnt tarnish
used in jewellery,electronics

Question 13

titanium
non ferrous

Answer 13

low density, durable,high mp,resistanht to corrosion
used in golf clubs, pacemakers

Question 14

tin
non ferrous

Answer 14

soft, malleable,good corrosion resistance
used in tin plate coating and solder

Question 15

ferrous alloys

Answer 15

contain iron, carbon and one other element

Question 16

stainless steel
ferrous alloy

Answer 16

contains iron, carbon,chromium,nickel
hardwood impact resistance, good corrosion resistance
used in medical equipment

Question 17

die steel
ferrous alloy

Answer 17

good dimensional stability,hard,has a natural oxide layers helps prevent corrosion
used in dies in die casting, wire drawing

Question 18

high speed steel
ferrous alloy

Answer 18

hard, tough,holds edge well, withstands high temp
used in drill bits, kitchen knives

Question 19

non ferrous alloys

Answer 19

do not contain iron

Question 20

bronze
non ferrous alloy

Answer 20

low mp,low friction,self lubricating,corrosion resistant,heat/electrical conducter
used in valves,taps,musical instruments

Question 21

bronze
non ferrous alloy

Answer 21

resistant to corrosion, brittle
used in statues medals and coins

Question 22

duralumin
non ferrous alloy

Answer 22

ductile,malleable,oxidies to create protective layer
used in aircraft parts, tent poles

Question 23

pewter
non ferrous alloy

Answer 23

low mp,soft,malleable
used in flasks

Question 24

sheet
stock forms

Answer 24

large panels up to 3mm thick.
ideal for pressing, punching,bending
used in tin cans, pots,pans,panels

Question 25

plate stock form

Answer 25

thickness greater than 3mm usually narrow ideal for plasma cutting flame used in construction

Question 26

bar stock form

Answer 26

flat/square-easily milled, drilled,welded round/hexagonal-easily turned on lathe used in tool making, gym equipment

Question 27

tube stock form

Answer 27

used in bike frames, musical instruments

Question 28

I beams

Answer 28

spread vertically loading whilst reducing material/weight

Question 29

L beams

Answer 29

easy connections in construction not as strong as tube

Question 30

RSJ

Answer 30

rolled steel joints used in construction