The Ultimate Guide to Infernal Iron in Baldur’s Gate 3

In the vast and treacherous world of Baldur’s Gate 3, adventurers often come across rare and valuable materials, each with its own unique purpose. One such material is the enigmatic Infernal Iron, a precious metal that plays a crucial role in the game’s narrative and mechanics. In this comprehensive guide, we’ll delve deep into the mysteries surrounding Infernal Iron, exploring its locations, uses, and significance within the game.

What is Infernal Iron?

Infernal Iron, as its name suggests, is a rare and coveted metal with an infernal origin. This material is intimately tied to the companion quest of Karlach, the fierce Tiefling barbarian whose heart harbors an infernal engine. This engine, while granting Karlach immense power, also poses a grave threat to her life, as it slowly spirals into overdrive, threatening to consume her from within.

The Importance of Infernal Iron

Infernal Iron holds the key to repairing Karlach’s infernal engine, a crucial step in ensuring her survival and maintaining her as a valuable ally on your journey. Without this rare metal, Karlach’s fate would be sealed, and your party would lose a formidable fighter. Therefore, acquiring Infernal Iron becomes a top priority for any adventurer seeking to aid their Tiefling companion.

Locations of Infernal Iron

Infernal Iron can be found scattered throughout the Forgotten Realms, often hidden within chests, treasure troves, or in the possession of powerful foes. Here are some of the known locations where you can acquire this precious material:

Blighted VillageFound in the basement of the north house, inside a chest near the forge.
Zhentarim HideoutLocated in a locked chest at the north end of the hideout.
Shattered SanctumBehind Dror Ragzlin’s location in the Goblin Camp.
GrymforgeObtained from Stonemason Kith after passing skill checks.
Gauntlet of SharFound in a locked room just before Balthazar’s workshop.
YurgirDropped by the demon Yurgir in the east wing of the Gauntlet of Shar.
Mason’s GuildLying on a workbench in the main courtyard.
Steel WatchersLooted from the fallen Steel Watcher robots in the Lower City during Act 3.

Keep in mind that some of these locations may require specific quests or conditions to be met before accessing them, so plan your adventure accordingly.

Using Infernal Iron

Once you’ve acquired Infernal Iron, your next step is to seek out Dammon, the Tiefling smith residing in the Emerald Grove settlement. Dammon possesses the knowledge and skills necessary to repair Karlach’s infernal engine using the rare metal.

Upon presenting Infernal Iron to Dammon, he will initiate the repair process, providing a temporary solution to Karlach’s predicament. However, he will instruct you to meet him again in Baldur’s Gate later in the story, where he will have more permanent solutions to offer.

During Act 2, you can locate Dammon at the Last Light Inn, where he will accept another piece of Infernal Iron to fully repair Karlach’s engine, ensuring her long-term survival and restoring her to peak condition.

Infernal Alloy and Flawed Helldusk Armour

In addition to its use in repairing Karlach’s engine, Infernal Iron can also be transformed into Infernal Alloy by Stonemason Kith in the Grymforge. This special alloy serves a unique purpose: when presented to Dammon at the Last Light Inn, he will forge the Flawed Helldusk Armour set, imbuing it with the ability to deal fire damage to enemies that strike you.

While the Flawed Helldusk Armour is a formidable set in its own right, it is eventually outclassed by the Legendary Helldusk Armour, which can be obtained later in the game through separate means unrelated to Infernal Alloy.


Infernal Iron is a rare and invaluable material in Baldur’s Gate 3, playing a pivotal role in the survival of your Tiefling companion, Karlach. By acquiring this precious metal and seeking out the expertise of Dammon, you can ensure Karlach’s continued presence in your party and potentially gain access to powerful armour sets.

Remember, the path to obtaining Infernal Iron is fraught with challenges, but the reward of preserving a loyal ally and unlocking new possibilities makes the effort worthwhile. Embrace the adventure, scour the Forgotten Realms, and forge a lasting bond with your companions through the power of Infernal Iron.