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Question
The following types of materials are usually the most ductile
Options:
A .  Face centered cubic lattice
B .  Body centered cubic lattice
C .  Hexagonal close packed lattice
D .  All of the above
Answer: Option A
A face-centered cubic crystal structure will exhibit more ductility (deform more readily under load before breaking) than a body-centered cubic structure.
The bcc lattice, although cubic, is not closely packed and forms strong metals. Alpha-iron and tungsten have the bcc form.

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