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Alloy steels containing 0.05% to 0.15% of alloying elements are called _______

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Alloy steels containing 0.05% to 0.15% of alloying elements are called _______

(a) Weathering steel

(b) Stainless steel

(c) Tool and die steel

(d) Microalloyed steel

I got this question in an internship interview.

This is a very interesting question from Alloy Steels topic in section Diffusion in Solids & Ferrous Materials of Engineering Material & Metallurgy

1 Answer

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by (1.3m points)
Correct choice is (d) Microalloyed steel

To elaborate: Microalloyed steels contain alloying elements in small quantities (0.05% to 0.15%). These elements include niobium, vanadium, titanium, molybdenum, rare earth metals, among others. They are used to refine the microstructure of the grain or for precipitate hardening process.

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