I got two pieces of steel plate in, my head.

He was sorry he'd told her that fish story about having a steel plate in his head.

Later, it's discovered that he has a steel plate in his head.

He held a steel plate about six inches square in his left hand.

Not even if he made his hands buzz so they'd cut through steel plate.

His jaw is held in place by two steel plates.

As he spoke a steel plate set in the wall swung away.

"Not a chance," he said, and sat down against the steel plate.

Now it's held together by a steel plate and four screws.

Also, steel plates that fall when struck can be added to a course of fire, or stage.