1.2 metals Flashcards
What are the 2 methods of metal extraction
Added chemicals and electricity and crushing and heating
What are the 5 ferrous metals
Cast iron, low/med/high carbon steel, HSS, DS, SS
What is the -ve property of cast iron
hard but potentially brittle
What is the -ve properties of Low carbon steel
Poor corrosion resistance and lack hardness and stiffness
What is the adv of a higher carbon steel
More hard and stiff
What are the adv of a lower carbon steel
Cheaper and strong, tough, ductile, malleable
What is the adv of HSS/DS
Harder at high temps
What is the adv of stainless steel
Corrosion resistant
What are the 3 alloy steels
HSS, DS and stainless steel
What is the disadv of alloy steels
Expensive elements such as chromium, tungsten and nickel
What are the 3 non ferrous alloys
Pewter, brass and bronze, aluminium alloys
What are the 7 non ferrous metals
gold, silver, zinc, tin, titanium, copper, aluminium
What are the adv of pewter
low melt point for casting
What are the adv of brass and bronze
harder than the main element
What are the adv and disadv of al alloys
harder and stronger than the main element however can corrode