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Mineral oils are used in the hardening process of ____________

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in Engineering Material & Metallurgy by (773k points)
Mineral oils are used in the hardening process of ____________

(a) Pipes

(b) Carbon

(c) Alloy steel

(d) Heavy forging

The question was asked in an international level competition.

Enquiry is from Normalising & Quenching in portion Heat Treatment of Engineering Material & Metallurgy

1 Answer

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Best answer
Right option is (c) Alloy steel

Easy explanation: Mineral oils are obtained during the refining of crude petroleum. These are widely used as quenching media due to their severity of quench. Mineral oils are used in hardening alloy steels.

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