Question

We have an annealed carbon steel which has hardness of 150HBS. Suppose we know the hardness of Pearlite is 200HBS and the hardness of Ferrite is 80HBS, determine the carbon amount of this steel.

A.
(a) 0.45% 
B.
 (b) 0.8%
C.
 (c) 1.2% 
D.
(d) 0.2%

Answer 1

Answer:

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Answer 2

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The correct answer is option C.(c) 1.2%