How to use "iron" in a sentence

To those new states whom we welcome to the ranks of the free, we pledge our word that one form of colonial control shall not have passed away merely to be replaced by a far more iron tyranny

He turned back to the room, picked up his bag and took out a short iron bar, sharpened at one end

He then put his shoes into the bag and, grasping the iron bar in his right hand, he moved quietly towards the door of the bishop's bedroom

At the foot of the smaller barricade, half-hidden by broken stones and pieces of wood, there was a hole in the road covered with an iron grille

The opening was closed with a strong iron gate, held firm by a huge, rusty lock

On the left, were two high iron gates and beside them a small lodge

His stylishly cut brown hair shaded to iron gray at the temples

Two panes of iron like glass

"I don't care if it's hailing iron basketballs," Alexander said

I turned to the north, towards the iron gates of Hyde Park

The one weak point in that man's iron character is the admiration he feels for me