Iron Valheim 1.0.20
Iron is a material found in the Swamp biome in Valheim. It is used to craft Carapace Breastplate and build Black Forge Cooler.
“A bar of pure iron ready to be worked.”
Iron is a material, described in the game as "A bar of pure iron ready to be worked." It first becomes available in the Swamp. Each bar weighs 12, and a stack holds up to 30. Iron cannot be teleported.
Iron is used to craft the Carapace Breastplate, Carapace Greaves, Iron Scale Mail, Iron Greaves, Padded Cuirass, Padded Greaves, Ironhead Arrow, Iron Atgeir, Iron Axe and Jotun Bane. It is also needed for building the Black Forge Cooler, Blast Furnace, Cage Floor 1x1, Cage Floor 2x2, Cage Wall 1x1 and Cage Wall 2x2.
Used to craft
Ancient Bark Spear, 
Arbalest, 
Banded Shield, 
Battleaxe, 
Carapace Breastplate, 
Carapace Greaves, 
Demolisher, 
Eitr-weave Hood, 
Horn of Celebration, 
Huntsman Bow, 
Iron Atgeir, 
Iron Axe, 
Iron Bolt, 
Iron Brooch, 
Iron Buckler, 
Iron Greaves, 
Iron Helmet, 
Iron Mace, 
Iron Nails, 
Iron Pickaxe, 
Iron Scale Mail, 
Iron Sledge, 
Iron Sword, 
Iron Tower Shield, 
Ironhead Arrow, 
Jotun Bane, 
Krom, 
Mechanical Spring, 
Mistwalker, 
Nimble Anklet, 
Padded Cuirass, 
Padded Greaves, 
Padded Helmet, 
Porcupine, 
Serpent Scale Shield, 
Silver Knife, 
Silver Sword, 
Skoll and Hati, 
Skull Splittur.
Used to build
Black Forge Cooler, Blast Furnace, Cage Floor 1x1, Cage Floor 2x2, Cage Wall 1x1, Cage Wall 2x2, Darkwood Gate, Dvergr Sharp Stakes, Dvergr Stakewall, Food Preparation Table, Forge Tool Rack, Frost Foundry, Hot Tub, Iron Cooking Station, Iron Gate, Iron Stack, Obliterator, Personal Chest, Pots and Pans, Reinforced Chest, Shield Generator, Smith's Anvil, Standing Blue-burning Iron Torch, Standing Green-burning Iron Torch, Standing Iron Torch, Stone Oven, Stonecutter, Tool Shelf, Vice, Wood Iron Beam, Wood Iron Beam 26°, Wood Iron Beam 45°, Wood Iron Beam 67°, Wood Iron Pole.
Other material items
Acorns, 
Amber, 
Amber Pearl, 
Ancient Bark, 
Ancient Coin, 
Ancient Metal, 
Ashlands Gourmet Bowl, 
Ashwood, 
Asksvin Bladder, 
Asksvin Hide, 
Asksvin Neck, 
Asksvin Pelvis.