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How much is the Brinell hardness of sorbite?

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in Casting-Forming-Welding II by (119k points)
How much is the Brinell hardness of sorbite?

(a) 250

(b) 350

(c) 450

(d) 550

The question was asked by my college director while I was bunking the class.

Question is from Transformation in Steel in chapter Heat treatment of Metals and Alloys of Casting-Forming-Welding II

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Right answer is (b) 350

Explanation: The cementite in sorbite is known to be very finely divided. The material sorbite is not one of the hardest materials known in casting. The Brinell hardness of sorbite is 350.

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