Steel Plate Armor

Steel Plate Armor is a heavy armor set that is available in The Elder Scrolls V: Skyrim.

Smithing
Steel Plate Armor is available for crafting under the Steel category at a forge after obtaining the Advanced Armors perk (Level 50 Smithing).

It can be improved at a workbench with corundum ingots.

Trivia

 * Originally this armor was to be called Nord Plate Armor, as seen in the book of concept art which came with the collectors version of the game.
 * While wearing Steel Plate Armor, Guards will sometimes say "Ah, Steel Plate. Now there's a solid choice of armor."
 * Bolgeir Bearclaw in the Blue Palace court of the city of Solitude is known for wearing a full suit of Steel Plate Armor without the Helmet.
 * Originally, this armour was supposed to also have a Steel Plate Shield, as seen in The Official Guide to Skyrim. (stats for this are 28 armor, 14 weight and 325 value).
 * Several leaders wear this armour, such as Atar and Bandit Chiefs. Jarl Balgruuf the Greater also wears a set of this armour without the helmet during the Battle for Whiterun, when you duel him as a Stormcloak. Kharjo also wears steel plate armor without a helmet.
 * In the Black Briar Lodge (east of Riften) all mercenaries wear this armour, but without the helmet, which can make a small fortune, however indoors the groups may be dangerous. The mercenary armor changes at higher levels (unconfirmed).
 * Uthgerd the Unbroken wears a set of steel plate armour, lacking a helmet.
 * This is the only heavy armor set that can be crafted by obtaining the perks for the light armor side of the Smithing skill tree.
 * Some Guards will say "-Good ol'e fashioned steel."
 * Bounty collectors wear this armor with exception of gauntlets(eventually at high levels)