Metals Flashcards
What are the 2 groups of metals?
Ferrous and non-ferrous
What is a Ferrous metal?
-Contains Iron
-Is magnetic
-Carbon contents
-Prone to corrosion when exposed to moisture and oxygen
What is a non-ferrous metal?
-Dosen’t contain iron
-Resistant to corrosion
-Majority are non-magnetic (good for electronic devices and wiring)
Name Ferrous metals
Cast Iron
Low Carbon steel
High Carbon Steel
Name non-Ferrous metals
Aluminium
Copper
Zinc
Tin
What’s an Alloy?
Metals fromed mixing two or more metals to produce a new metal with improved characteristics and properties
Properties of Aluminium?
A pure metal (often alloyed with copper and manganese depending on application)
Lightweight, soft, ductile and malleable
A good conductor of heat and electricity
Corrosion resistant
Properties of Copper
A pure metal
Extemely ductile and malleable
An excellent conductor of heat and electricity
Easily soldered and corrosion resistant
Properties of Zinc
A pure metal
Weak in its pure state
High level of corrosion
Low melting point
Easily worked
Name types of alloy’s
Brass, Stainless steel, high speed steel
What happens to a metal when there is more carbon content?
The harder and less malleable the metal becomes
Properties of Cast iron
Contains Iron and 3.5% Carbon
Hard surface but has a brittle soft core
Strong compressive strength
Cheap
Properties of Low carbon steel (mild steel)?
Contains Iron and 0.15-0.35% carbon
Good tensile strength, tough, malleable
Poor resistance to corrosion
Properties of High carbon steel (tool steel)?
Contains Iron and 0.70-1.4% Carbon
Hard but also brittle
Less tough, malleable or ductile than medium carbon steel
Properties of Tin?
Pure metal
Soft ductile and malleable
Low melting point
Excellent corrosion resistance
Properties of Brass- non-ferrous alloy?
Alloy of copper (65%) and zinc (35%)
Strong and ductile
Casts well
Corrosion resistant
Conductor of heat and electricity
Properties of Stainless steel?
Alloy of steel including chromium (18%) and nickel (8%)
Hard and tough
Excellent resistance to corrosion
Properties of duralumin?
Alloy of aluminium (90%) copper (4%) magnesium (1%) manganese (0.5-1%)
Strong, soft and malleable
Excellent corrosion resistance
Lightweight
Common uses of Cast iron?
Vices, car brake discs, cylinder blocks, manhole covers
Common uses of Low carbon steel?
Car bodies, nuts, bolts, and screws, RsJ’s and girders
Common uses of High carbon steel
Screwdrivers, chisels, tapes and dies
Common uses of Aluminium?
Aircraft bodies, high-end car chassis, cans, cooking pans, bike frames
Common uses of copper?
Plumbing fittings, hot water tanks, electrical wire
Common uses of zinc?
As a galvanised coating in creash barriers, corrugated roofing, intricate die cast products
Common uses of tin?
Coatings on food and drinks cans, solders
Common uses of brass?
Castings, forgings, taps, wood screws
Common uses of stainless steel?
Sinks, cutlery, surgical equipment, homewares
Common uses of duralumin?
Aircraft structure and fixings, suspension applications, fuel tanks
Most widely used ferrous metal?
Low carbon steel
Most widely used non-ferrous metal?
Aluminium
