Infernal Iron is one of the most critical crafting materials in Baldur's Gate 3, serving as a vital resource for companion progression and equipment forging. Knowing where to gather this rare metal ensures you do not miss key quest milestones or powerful armor upgrades throughout your adventure. Tracking down every piece allows players to maximize their party's potential across all three acts of the campaign.
Finding Infernal Iron in Act 1
In the opening act, players can discover several pieces of Infernal Iron hidden inside locked chests and secret basements. The earliest piece is located inside the blacksmith's cellar in the Blighted Village, accessible by burning through a web or lockpicking the cellar door. Another piece can be found in the Shattered Sanctum behind Dror Ragzlin's throne inside a locked treasure room.
You can also secure additional material in the Zhentarim Hideout near Waukeen's Rest by cracking open a trapped chest. Finally, speaking with Stonemason Kith in Grymforge allows players to earn an Infernal Alloy by passing a series of skill checks.
Locating Materials in Act 2 and Beyond
Moving into the Shadow-Cursed Lands opens up more opportunities to stock up on this hellish resource. The Reithwin Mason's Guild houses a piece sitting openly on a table near the main courtyard area. Deep inside the Gauntlet of Shar, players can loot Infernal Metal directly from the defeated orththon Yurgir or unlock Balthazar's vault chest.
During Act 3, Infernal Iron becomes significantly easier to acquire as a guaranteed drop from defeated Steel Watchers across the Lower City. Additional pieces can be discovered on tables inside the Flymm Cargo basement or within the aquatic Iron Throne facility.
Key Uses for Infernal Iron in BG3
The primary use for Infernal Iron is advancing Karlach's companion quest, "The Hellion's Heart," to stabilize her overheating internal engine. Handing these materials over to Dammon the blacksmith allows him to perform crucial repairs on her heart. Completing these upgrades helps grant her resistance to charm effects and enables romantic interactions.
In addition to helping Karlach, Dammon can utilize spare Infernal Iron during Act 2 to craft the Flawed Helldusk armor set. This special heavy armor, along with matching gloves and helmets, inflicts retaliatory fire damage on nearby enemies. Any extra pieces left over can be sold to vendors for extra gold.
