Iridium is moderately strong armor used by low and mid level players. Often equipped on Exodus cruisers and Venom battleships. They are more efficient and stronger than Tritanium. Players who unlock this armor should consider refitting their favourite fleets with this type of armor.
They are inferior to special armor types such as ones with built in resistance. Iridium armor used to be popular before the repair times were overhauled, they featured far less repair time and satisfactory protection.