Infernal Iron is one of the most critical crafting materials in Baldur's Gate 3, serving a dual purpose for companion quests and high-tier equipment forging. Players venturing through Faerun often encounter this rare resource inside locked chests, hidden basements, and dangerous enemy strongholds. Knowing where to locate each piece and how to utilize it effectively ensures you do not miss out on vital story progression or powerful combat upgrades.
Finding Infernal Iron in Act 1 Locations
The earliest opportunity to acquire Infernal Iron occurs in the Blighted Village inside the blacksmith's cellar. Players can access this area by unlocking the wooden hatch or destroying the cracked floor in the adjacent house, where a locked chest holds the metal. Another early piece rests within the Shattered Sanctum inside the vault behind Dror Ragzlin's throne, which requires lockpicking or the leader's key to open.
A third piece in Act 1 can be found in the Zhentarim Hideout near Waukeen's Rest. Players must breach or lockpick the guarded treasure room at the back of the cave system to secure the ore. Keeping up with guides and updates through daily gaming news helps players discover every hidden chest across the vast regions of the Sword Coast.
Securing Infernal Iron in Act 2 Areas
As you transition into Act 2 and explore the Shadow-Cursed Lands, additional pieces of Infernal Iron become available. One primary spot is inside the Reithwin Mason Guild, where a piece sits openly on a table near the main floor workbench. Investigating this area carefully allows players to retrieve the material without engaging in tough combat encounters.
Another valuable piece, officially classified as Infernal Alloy, can be obtained from Stonemason Kith in Grymforge after passing a series of dialogue checks. Alternatively, players exploring the Gauntlet of Shar can discover Infernal Iron inside Yurgir's lair near his bed of bones. Gathering these pieces gives you more flexibility when visiting Dammon later in your journey.
Fixing Karlach's Hellfire Engine Heart
The most important narrative use for Infernal Iron involves progressing Karlach's companion questline. Bringing the iron to Dammon, the Tiefling blacksmith located at the Emerald Grove or Last Light Inn, allows him to perform crucial repairs on her infernal engine. Completing these repairs stabilizes her condition and unlocks deeper romance options as well as unique combat abilities.
Dammon requires two separate repairs using two pieces of Infernal Iron to fully stabilize Karlach's heart across Acts 1 and 2. It is essential to recruit Dammon early and keep the Tieflings safe during key story decisions so he remains available as a vendor. Failing to secure these repairs locks out major story beats for Karlach's character arc.
Forging the Flawed Helldusk Armor Set
Beyond fixing Karlach's engine, Dammon can use extra Infernal Iron to craft powerful gear for your party. Once her engine is stabilized in Act 2, handing additional pieces to Dammon results in the creation of the Flawed Helldusk armor set. This set includes a heavy chest piece, gloves, and a helmet that grant fire damage resistance and special melee effects.
The Flawed Helldusk gear offers an excellent defense boost for martial classes like Barbarians, Fighters, and Paladins during the mid-game. Because Infernal Iron is limited, prioritizing Karlach's quest before crafting armor guarantees you maximize the material's benefits. Utilizing every piece ensures your party enters the endgame fully equipped for difficult encounters.
