Properties of materials Flashcards
What are the 6 working properties of materials?
Strength
Hardness
Toughness
Elasticity
Ductility
Malleability
What is strength?
Ability to withstand forces without breaking
What is hardness?
Ability to withstand scratching and abrasion or denting
What is toughness?
How hard to it is to break or snap the product
What is ductility?
Can be drawn into wires
What are the 5 physical properties of materials?
Electrical conductivity
Thermal conductivity
Fusibility
Density
Absorbency
What is fusibility?
If fusibility is high then the material will have a low melting point
What is density?
A measure of the materials mass per unit volume in kg/m3
What is absorbency?
How good a material is at soaking up moisture
What are the 5 physical properties of non-metals?
More brittle
Not always solid at room temp
Poor electrical conductors
Dull looking
Less dense
What are the 4 physical properties of metals?
Strong
Malleable
Good heat and electrical conductors
Not very fusible (high melting/boiling points)
What is an alloy?
A mixture of two or more metals which has a set of it’s own physical properties
Why do products need to have certain properties?
So they can suit their purpose and use
How can wood be strengthened?
It can be seasoned which is effectively drying the wood after it is cut down so it is unable to rot and weaken
How can metal become more malleable?
Annealing which is effectively heating the metal and then leaving it to cool to make them more soft, ductile and less brittle
