Alloys Flashcards
What is an alloy?
Metal made by combing two or more metallic elements
Why are metals alloyed?
To improve the properties
E.g. Harder, more corrosion resistant, improve machining characteristics
Name 3 alloys
Stainless steel
Duralumin
Brass
What are the composites of stainless steel?
Chromium
Nickel
Steel
What are the composites of duralumin?
Aluminium
Copper
Manganese
What are the composites of brass?
Copper
Zinc
What is the advantage of stainless steel?
Corrosion resistant
What are the advantages of duralumin?
Lightweight
Strong
What are the advantages of brass?
Casts well
Easily machined
Good conductor of electricity
What are the disadvantages of stainless steel?
Expensive
Hard to cut
What is the disadvantage of duralumin?
Work hardens
What are the disadvantages of brass?
Susceptible to cracking when cold worked
Needs to be annealed
Give 3 uses of stainless steel
Kitchen utensils
Pipes
Medical tools
Give 2 uses of duralumin
Aviation industry
Automobile industry
Give 3 uses of brass
Central heating valves
Electrical components
Ships propellors
