High speed cutting tool steels contain about __________ percent of tungsten. (A) 6-8 (B) 18-20 (C) 30-35 (D) 50-55

High speed cutting tool steels contain about __________ percent of
tungsten.
(A) 6-8
(B) 18-20
(C) 30-35
(D) 50-55
by

1 Answer

Answer :

(B) 18-20
by

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