Different Expressions And Calculations Of Ductility Of Materials

Ductility is a very common term in mechanical and materials science engineering. The term ductility states the material’s ability to rate of deformation up to fracture, with the application of stresses. 

What Is ‘Ductile Material’?

Illustration of different ductile fractures(Image Source:material-properties.org/what-is-fracture-of-material-fracture-mechanics-definition/).

We can say ‘ductile’ to a material if it has a significant malleability or deformability under stresses. Ductile materials are used in manufacturing and casual life to produce required items. There are lots of ductile metals available to provide the production of various kinds of items through shaping or hammering processes. 

In classical mechanics, ductility is defined with standards to identify the level of ductilities of materials. 

How The ‘Ductility’ Is Calculated? 

There are two methods to calculate the ductility of materials. 

  • Percentage of elongation, 
  • Reduction in area. 

These two types of ductility calculations give the rate of ductility of a specific material. 

Percentage Elongation Ductility

You can calculate the percentage ductility of a specimen by using the calculator above. You just need to enter the first length of the specimen, and the final length of the specimen right before the fracture. Click on the ‘Calculate!’ button to calculate the ductility of the material.

Reduction In Area Ductility

Also, ductility is calculated with the reduction in the area of the specimen. For example, if you have a specimen of a specific material, those axial forces are exerted from two edges, necking will occur. In this necking region, if you measure the first starting cross-sectional area and the necking cross-sectional area, then write them at the calculator above. 

Click on the ‘Calculate!’ button to calculate ductility. 


As you see, the logic of the ‘ductility’ of materials is very simple in classical mechanics. 

Mechanicalland does not accept any responsibility for calculations made by users in calculators. A good engineer must check calculations again and again.

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