ironlike determination.    From Wordnet, Princeton University. 

Noun : hearts of iron. ,Put him in irons!.    From Dictionary.com. 

Adjective : an iron skillet. ,an iron will. ,an iron grip. ,an iron voice.    From Dictionary.com. 

His ironlike nails raked her back, tearing open the copper mesh dress.    From Wordnik.com.  [Riverwind the Plainsman]

'I will kill this bull/he muttered, bearing down with all the force of his ironlike body.    From Wordnik.com.  [Mexico]

Nylan didn't feel that ironlike, not at all, and he wondered again how long before the shoulder would heal completely.    From Wordnik.com.  [The Chaos Balance]

Among the trees reared a broken domelike structure, built of gigantic blocks of the peculiar ironlike green stone found only on the islands of Vilayet.    From Wordnik.com.  [Conan the Wanderer]

Though it's treated with a water softener, the water in the shower still gives alternately a sulfurous and ironlike smell.    From Wordnik.com.  [chicagotribune.com -] Reference

Straight against the ironlike claws he drove, reckless in the grasp of the anger that had exploded within him at the unfair trick.    From Wordnik.com.  [The Plunderer] Reference

He stooped and clutched the broken war axe, grasping the stone head in the palm of his great hand, the jagged and ironlike shaft projecting from between his ringers like the blade of a dagger.    From Wordnik.com.  [The Girl at the Halfway House A Story of the Plains] Reference

That, together with the hardness of his eye, the cruelty of his mouth, and the absolute lack of softness anywhere in the ironlike face or frame -- all this condemned the monster for what he was; inhuman.    From Wordnik.com.  [The Lord of Death and the Queen of Life] Reference

The other was a great, grey man whom age apparently had not weakened but rather settled and hardened into an ironlike durability; the winds of time or misfortune would have to break that stanch oak before it would bend.    From Wordnik.com.  [Trailin'!] Reference