You clearly don't have any work related to the steel industry.
If you did, you'd know that steel prices fell when the tarriff was put into effect, and rose, when it was lifted.
Yes, that is counterintuitive to free-marketeer doctrine, but it is what really happened in the marketplace. The tarriff stimulated domestic companies to restart more domestic capacity than foriegn capacity was constricted by the tarriff (think the LTV mill in Cleveland, for example). A greater overall supply available in the US meant that prices fell.
Around the time the tarriff was removed, the Chinese steel market started overheating, sucking in scrap and finished steel wherever it could be found and thus raising overall prices worldwide for these products.