Which of the following is not used as an alloying element in steel used for making permanent magnetic material ?

Which of the following is not used as an alloying element in steel use

1.	Which of the following is not used as an alloying element in steel used for making permanent magnetic material ?
A.	Tungsten
B.	Chromium
C.	Vanadium
D.	Cobalt
Answer» D. Cobalt

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Which of the following is not used as an alloying element in steel used for making permanent magnetic material ?

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