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Which of the following metals are regarded as refractory metals?

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in Corrosion Engineering by (98.5k points)
Which of the following metals are regarded as refractory metals?

(a) Niobium and tungsten

(b) Molybdenum only

(c) Niobium, molybdenum, and tungsten

(d) Tungsten and molybdenum only

I got this question in an interview for internship.

My question comes from Materials topic in section Materials of Corrosion Engineering

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Right answer is (c) Niobium, molybdenum, and tungsten

To explain I would say: Refractory metals are characterized by very high melting points with limited corrosion resistance. Tantalum, niobium, molybdenum, tungsten, and zirconium are regarded as refractory metals.

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