Ductility ad malleability is the two properties associated with stress undertaking the ability of metals. The difference between ductility and malleability is that ductility is the result of the application of tensile stress o the metal while the malleability of metal is an outcome of compressive stress applied to it.
Definition of Ductility:
The ductility is defined as the ability of solid material which is to plastically deform to a larger extent before a crack appears when it is subjected to external tensile loading.
Definition of Malleability:
While the malleability is defined as the ability of basically solid material which is to plastically deform to a larger extent before it cracks appears when it is subjected to external compressive loading.
Difference between ductility and malleability:
- The ductility of solid material decreases with an increase in temperature, while the malleability of solid material increases with increases in temperature.
- Ductility is the ability of a metal to get stretched under tension without getting damaged in the sense of breakage or some fracture. While malleability is the capacity of metal that shows its behavior of getting flattened under the compression without undergoing breakage.
- Ductility is a crucial property when the solid is undergoing wire drawing operation because tensile force acts on it. While malleability is a crucial property when the solid is undergoing rolling, extrusion, etc. Operation because compressive force acts on it.
- both properties ductility ad malleability have some effect on temperature change. The increase in the temperature cause decreases ib the ductility of the material while the rise in the temperature increases the malleability of the materials.
- To measure the ductility of metal, which is a bend test is performed, where the extent up to which the metal can be stretched without fracture is checked. but the malleability of material is checked by the pressure withholding ability of the metal. Thus the level of pressure is checked and that the metal can sustain without getting fractured.
- When we talk about their variation with respect to each other then we generally define, ductile metals exhibit high malleability whereas the metals that have high malleability may not possess good ductility. for example lead shows high malleability ut poor ductility.
- As stretching is associated with ductility thus the result is a ductile nature and the metal is transformed into thin wires. However, as deformation leads to produce a flat surface thus as an outcome malleable nature the metal is transformed into a thin sheet-look-like surface.