Ironflesh

 is an Adept-level Alteration spell in The Elder Scrolls V: Skyrim. When cast, the spell improves the caster's armor rating by 80 points for 60s. With the perk, "Mage Armor", the effects of Ironflesh are doubled, raising the casters armor rating to 160 points for 80 seconds.

Strategy
When used in conjunction with Lightning Cloak or another cloak spell, Ironflesh allows the caster to deal out larges amount of damage, at melee range, without taking much damage themselves.

Other uses

 * Morokei uses this spell during the battle against him in the quest, "Staff of Magnus"
 * Faralda uses this spell when she and the Dragonborn defend Winterhold against the Magic Anomalies summoned by Ancano.

Spell Tome locations

 * Tolfdir sells this spell once the player's Alteration skill reaches level 50.