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On which of the following factor, does weldability not depend?

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in Casting-Forming-Welding II by (119k points)
On which of the following factor, does weldability not depend?

(a) Boiling point

(b) Melting point

(c) Thermal expansion

(d) Thermal conductivity

I had been asked this question in an online quiz.

This intriguing question originated from Weldability in section Welding and Related Processes of Casting-Forming-Welding II

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Right answer is (a) Boiling point

For explanation I would say: Weldability is dependent on five factors of the metal or alloying element. The factors being, melting point, thermal expansion, thermal conductivity, surface condition and change in the microstructure.

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