unit 4 Flashcards
ferrous metals
contain iron,magnetic and rust
non ferrous
don’t contain iron,non magnetic and don’t rust
alloys
combination of 2 or more metals/elements one of which is a metal
low carbon steel
ferrous
malleable,ductile,cheap compared to other metals.giid tensile strength,easy to weld
used in nuts and bolts
medium carbon steel
ferrous
less ductile than low carbon steel,hard,malleable with good tensile strength
used in springs,gears,rail tracks
grey cast iron
ferrous
distributed heat evenly, very hard and giid resistance bro oxidation.it is brittle and has low impact resistance.
used in radiators cookware and stoves
white cast iron
ferrous
resistance to absorption, hard and brittle but has greater tensile strength.can be cast with little shrinkage.
used in nozzles,dies,stone crushers
aluminium
non ferrous
most abundant metal in earths crust.
good strength to weight ratio,soft,malleable,prevents corrosion
used in window frames
copper
non ferrous
malleable,ductile,conducts heat and electricity
used in electrical wire,motors
zinc
non ferrous
often alloyed,ductile,easy to work with,corrossion resistance
used in roofing materials, batteries
silver
non ferrous
electrical/thermal conductor, ductile
used in jewellery,electronics,mirrors
gold
non ferrous
one off the least reactive metals, very ductile,malleable,doesnt tarnish
used in jewellery,electronics
titanium
non ferrous
low density, durable,high mp,resistanht to corrosion
used in golf clubs, pacemakers
tin
non ferrous
soft, malleable,good corrosion resistance
used in tin plate coating and solder
ferrous alloys
contain iron, carbon and one other element
stainless steel
ferrous alloy
contains iron, carbon,chromium,nickel
hardwood impact resistance, good corrosion resistance
used in medical equipment
die steel
ferrous alloy
good dimensional stability,hard,has a natural oxide layers helps prevent corrosion
used in dies in die casting, wire drawing
high speed steel
ferrous alloy
hard, tough,holds edge well, withstands high temp
used in drill bits, kitchen knives
non ferrous alloys
do not contain iron
bronze
non ferrous alloy
low mp,low friction,self lubricating,corrosion resistant,heat/electrical conducter
used in valves,taps,musical instruments
bronze
non ferrous alloy
resistant to corrosion, brittle
used in statues medals and coins
duralumin
non ferrous alloy
ductile,malleable,oxidies to create protective layer
used in aircraft parts, tent poles
pewter
non ferrous alloy
low mp,soft,malleable
used in flasks
sheet
stock forms
large panels up to 3mm thick.
ideal for pressing, punching,bending
used in tin cans, pots,pans,panels
plate
stock form
thickness greater than 3mm usually narrow
ideal for plasma cutting flame
used in construction
bar
stock form
flat/square-easily milled, drilled,welded
round/hexagonal-easily turned on lathe
used in tool making, gym equipment
tube
stock form
used in bike frames, musical instruments
I beams
spread vertically loading whilst reducing material/weight
L beams
easy connections in construction not as strong as tube
RSJ
rolled steel joints used in construction
