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engineering

material properties flashcards

QuestionAnswer
What is the difference between physical and working properties? Physical - before it is used (appearance and conductivity e.g.) Working - how the materials behaves
What is elasticity? the ability to regain its original shape when bended or folded etc
What is ductility the ability to be stretched without breaking (e.g. copper wire)
What is malleability? The ability to be pressed, spread out or hammered (e.g. lead)
What is hardness? the ability to resist scratching, cutting or wear and tear
What is work hardening? When the properties of a material change due to working (e.g. bending a sheet, stronger at the joint)
What is brittleness? Will snap easily and not bend
What is toughness? resistant to bending and breaking (e.g. cast iron)
What is tensile strength? retains strength when stretched, maximum it can hold
What is compressive strength? retains strength when under pressure (e.g. concrete)
What is corrosion resistant? The ability to not corrode in it's environment (e.g. doesn't rust)
What does 'shiny' mean? when a material reflects light very well (e.g. gold/brass)
What is a matt finish? When a material doesn't reflect light very well and apereas dull
What is density? How solid a material is (denser materials weigh more)
What is conductivity? How well a material conducts heat or electricity
What is environmental degradation? deterioration of materials due to exposure of environmental factors such as temperature, humidity, chemical agents, and biological activity.
Which of these properties would be suitable for mobile phones? conductivity, hardness, toughness, corrosive resistance
Which of these properties would be suitable for bicycles? corrosive resistant, hardness, toughness, compressive strength,
What are ferrous metals? metals that contain iron
What are non-ferrous metals? metals that don't contain iron
What are examples of ferrous metals? mild steel, stainless steel, cast iron
What are examples of non-ferrous metals? Brass, copper, aluminium
What are thermoplastics?
Created by: willum
 

 



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