Invar armor is an early-game armor set with 3 specialty head pieces. One increasing critical strike chance, one increasing overall damage, and one that applies no special buffs, but has a higher base defense rating then its counterparts. The full set requires 38 Invar Ingots. (Crafted by Invar Armor Plates, Invar Melted Swords, and Invar Broken Shields at a Furnace.) The full set (including all three headpieces) requires 54 Invar Ingots.