Mechanical Engineering - Engineering Materials - Discussion

3. 

Which of the following material has maximum ductility?

[A]. Mild steel
[B]. Copper
[C]. Nickel
[D]. Aluminium

Answer: Option A

Explanation:

No answer description available for this question.

Balaji.G said: (Feb 1, 2013)  
Because it has very less carbon content. More carbon content became hardness.

Satya said: (Apr 16, 2013)  
It has very less carbon content.

Narendra said: (Aug 3, 2013)  
Why copper is not contain any carbon?

Suresh S(Nttf) said: (Oct 10, 2013)  
Even non ferrous materials are having more ductility compare to MS, and Aluminium and Copper this both are not having any carbon content.

Ramesh Mohanan said: (Dec 18, 2013)  
MS>Cu>Al>Ni>Zn>Sn>Pb.

Mahesh Hingu said: (Mar 22, 2014)  
Al>Cu>Ni>Mild steel.

Is this not right ?

Ganesh Markad said: (May 20, 2014)  
Why cast iron?

Deba said: (Jul 4, 2014)  
@ramesh MS is not more ductile than AL as at izod impact test AL absorb more energy than MS. So AL is more ductile than MS.

Sainath said: (Jul 18, 2014)  
Al has the highest ductility because it has high stacking fault energy and low strain hardening exponent.

Vishal said: (Jul 30, 2014)  
I guess Fe is having BCC structure where Al is of FCC. FCC structure materials are more ductile than the BCC. Adding carbon in Fe will increase its hardness. So according to these facts Al should be more ductile than MS.

But in practical(Tensile test) MS will have more elongation than Al for the same dimensional specimen. This is somewhat confusing.

Nisar said: (Aug 27, 2014)  
Al is more ductile than MS.

Suryateja said: (Sep 17, 2014)  
Because mild steel elastic modulus is high compared to remaining options.

Nisar C said: (Nov 4, 2014)  
Mild steel is consider as plain carbon steel. That is low alloy steel. Have very less carbon.

It will show negative hardness in rock well. So it will more ductile.

Venki said: (Nov 19, 2014)  
Aluminium not have any carbon percent but why is MS?

Igbafen20 said: (Dec 6, 2014)  
I believe there is a constant yield value for the above mentioned elements, on consideration its mild steel. It can withstand more tensile force before necking.

Madhesh V said: (Apr 4, 2015)  
Copper & Al are more ductile material than iron.

S K Saurabh said: (May 24, 2015)  
Ms is wrong Al is here most ductile.

Ravi said: (May 27, 2015)  
Can anybody tell which is the write answer? Don't confused.

Rajeev said: (Jul 30, 2015)  
Material Ductility, % reduction in area.

Mild steel 52.

Aluminium alloys 35-39.

Manisha Chemate said: (Sep 5, 2015)  
Less carbon content. Carbon contains hardness.

Haseeb said: (Dec 6, 2015)  
Al is more ductile than others.

K.Harish (Iiit) said: (Dec 28, 2015)  
Ductility depends upon the elongation of material, when applied the tensile stress.

Parmeshwar Nishad. Bhilai (C.G). said: (Dec 31, 2015)  
Mild steel is more ductile metal because undergo large permanent strain before failure. And large reduction in area before fracture.

If strain post elastic strain is greater than 5%, it is called ductile material. Also mild steel is more elastic than rubber.

Sunil Kumar Soni said: (Feb 14, 2016)  
Because it has less than 0.15% carbon.

Ram said: (May 13, 2016)  
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.

Desalegn Balgo said: (Jul 26, 2016)  
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.

Jadav Ramesh said: (Sep 22, 2016)  
I think, Aluminium is more ductile than mild steel.

Sreeram said: (Jan 30, 2017)  
Mild steel having more ductile behavioural phenomenal than the aluminium and reason is that;

Mild steel shows BCC crystal structure and Aluminium shows FCC.

And BCC is more ductile than FCC structure and one more best reason for why aluminium shows a less ductile than mild steel is. FCC crystal structure cannot show ductile to the Brittle transition temperature and only BCC can shows.

This is the main reason.

Anand said: (Feb 28, 2017)  
Copper is more ductile than Mild steel.

Amol Malode said: (Jun 3, 2017)  
The ductility of steel varies depending on the alloying constituents. Increasing levels of carbon decreased ductility.

The most ductile metal is platinum and the most malleable metal is gold.

Avey said: (Jun 17, 2017)  
No, Al is most ductile among all.

Dashrath said: (Jul 6, 2017)  
Because mild steel having less carbon than other materials.

Kiran said: (Jul 31, 2017)  
I think Al is more ductlile than MS.
It has no carbon content so.

Sai Saketh said: (Aug 24, 2017)  
I think copper is more ductile material.

Anonymous said: (Sep 1, 2017)  
Copper has about 60% more ductility than Aluminium.

Mohit said: (Oct 24, 2017)  
Ductility: gold > silver > iron > copper > aluminum > zinc > tin > lead.

Shyamal Ghosh said: (Mar 31, 2018)  
Which parameters used for ductility measurement. And why not copper the top ductility?

Abhishek said: (Nov 18, 2018)  
No, AL has malleability not ductility.

Jeeva said: (Apr 28, 2019)  
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.

Khushi said: (Jun 6, 2019)  
Al is more ductility material.

Dipesh said: (Nov 13, 2019)  
Carbon content is responsible for more Ductlility?

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