Mechanical Engineering - Engineering Materials - Discussion

Ductility is the ability of a material to deform plastically under Tensile Load.

Malleability is the ability of a material to deform plastically under Compressive Load.

Aluminium is more malleable than Mild steel, although Mild Steel is more ductile than Aluminium.

Mild steel has maximum ductility. Those materials show the lower amount of the carbon. Alloying elements from one metal to another metal.

Carbon content is responsible for more Ductlility?

No, AL has malleability not ductility.

The correct answer is Copper.

Copper is known for its high ductility, with a ductility percentage of around 50-60%. This means that copper can be stretched or drawn out to a significant extent without breaking.

Here's a rough ranking of the materials you listed by their ductility:

1. Copper (50-60%)
2. Aluminium (20-30%)
3. Mild steel (15-25%)
4. Nickel (10-20%)

Note that ductility can vary depending on the specific alloy, processing history, and testing conditions.

However, in general, copper is considered one of the most ductile metals.

Mild steel has moderate ductility, while nickel has relatively low ductility compared to the other options. Aluminium has intermediate ductility, but it's still lower than copper.

I think copper is the right answer.

Al is more ductility material.

Ductility: gold > silver > iron > copper > aluminum > zinc > tin > lead.

Given materials are Ms, Al, Cu, and Ni. There didn't mention any condition like whether it is proportional limit, elastic deformation zone, plastic deformation zone or ultimate zone.

Then according to material properties are valid under the proportional limit.

So maximum value of young's modulus its gives high ductility.

E (steel) =200Gpa.

E (copper) =117 Gpa.

E (Al) = 69 Gpa.

E (Nickel) =170 Gpa.

Ductility of metals depends on the strength of metallic bonding among atoms.
(attraction between sea electrons/that depend on the number of valence electrons and atomic kernels).

So the answer is Al.