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What is the Brinell hardness of pearlite?(a) 150(b) 180(c) 210(d) 240I got this question in exam.The question is from Cooling Curve for Pure Iron in chapter Heat treatment of Metals and Alloys of Casting-Forming-Welding II

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The correct choice is (B) 180

The best I can EXPLAIN: Pearlite is not the hardest form. The Brinell hardness of pearlite is only 180. There is a harder material than pearlite, CALLED as MARTENSITE, which has Brinell hardness ranging from 650-700.



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