Ductility and Malleability of Material

Ductility is that property of a material which enables it to draw out into thin wire. Mild steel is a ductile material. The percent elongation and the reduction in area in tension is often used as empirical measures of ductility.

Malleability of a material is its ability to be flattened into thin sheets without cracking by hot or cold working. Aluminum, copper, tin , lead , steel , etc. are malleable metals.

It is Important to note that some materials may be malleable and not ductile. Lead for example, can be readily rolled and hammered into thin sheets but cannot be drawn into wire. Although ductility and malleability quality , where as the malleability is considered as a compressive quality.

Current usage of words ductility and malleability makes it almost synonymous with workability or formability which is clearly related to plastic deformation.

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Mechinopedia For Mechanical Engineers

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