Steel ingot

Steel ingot is a crafting component in that can be dismantled into iron ore. It is needed to craft all crossbow bolts, among several other items.
 
It can be found as random loot, guaranteed during a couple of secondary quests, or purchased from the following merchants:
* All armorers and blacksmiths, except the one at Ardaiso Quarry
* Armors and weapons merchants in Nilfgaardian Army Group 'Center' Camp
* Merchant in the boatyard south of Refugees' Camp
* Merchant at Calveit Watchtower
* Merchant at Coast of Wrecks
* Merchant in Ursten
* Merchant by the road west of White Eagle Fort
* Moving merchant in Blackbough, near Carsten or south of Gate of the Hierarch
* Scoia'tael merchant in the forest south of Novigrad
* Scoia'tael merchant in the forest east of Oxenfurt
* Merchant at the sawmill northeast of Rannvaig
* Merchant at the Isolated Hut on Hindarsfjall
* Merchant in Mohrin Village 
* Merchant in Stacheier 
* Clerk in Villa Vedette 
* Merchant outside the The Cockatrice Inn 
* Merchant in Dupont & Sons 
* Merchant in Flovive 
* Merchant in Francollarts 
* Merchant in The Clever Clogs Tavern 
* Merchant in the Wine Market in San Sebastian 
* Wandering merchants in Toussaint 
* Wine Merchant at Rivecalme Storehouse 
Steel ingots can also be obtained by dismantling many items, including almost all that are crafted with it. The full list of items is way too long, but the following are all non-relic lootable items from the base game:
=== Needed to craft ===
Witcher gear:
Other items:
ru:Слиток стали
Category:The Witcher 3 crafting components