Stage drivers became famous for their fancy dress and iron nerves.

At last, the iron nerve of The Shadow seemed broken.

He was a famous shot, and his iron nerves never failed him in an emergency.

She had reflexes no other person could match, and iron nerve.

"A man with iron nerve," he said at last, knowing that that could only be part of it.

The iron nerve of the man showed in this crisis.

A man of iron nerve, he believed himself to be.

What he saw there shook even his iron nerves.

His iron nerve had for a moment completely failed him.

Such awful words seemed to shake even his iron nerve.