DUCTILITY
- A metal is ductile when it may be drawn out in tension without rupture.
- Wire drawing depends upon ductility for its successful operation.
- A ductile metal must be both strong and plastic
- With many materials ductility increase rapidly with heat.
- Is the property of a material which enables it to be drawn easily into wire form
- The percentage elongation and contraction of area, as determined from a tensile test are a good practical measures of ductility
- Ability to undergo permanent change in shape without rupture or loss of strength if any force applied.
MALLEABILITY
- The ability to be hammered or rolled out without cracking.
- Very few metals have good cold malleability, but most are malleable when heated to a suitable temperature
- The material that can be shaped by beating or rolling is said to be malleable.