Iron equipment

Iron Equipment is a recurring set of equipment in the series. Though not nearly as special as other sets of equipment such as Rune Equipment, Flame Equipment, and Mythril Equipment, there have been many pieces of Armor, Helmets, Shields, Staves, Swords, and various other equipments made from iron. It is usually low-ranked equipment, and is usually between Bronze Equipment and Mythril Equipment in terms of power.

Final Fantasy
The first set of Iron equipment comes in the form of Iron Nunchuck, Crossier (originally called the Iron Staff), Iron Armor, and Iron Shield, all of which are low-ranked equipment.

Final Fantasy III
Iron Arrow is the only weapon to represent Iron Equipment in this game.

Final Fantasy IV
Iron Arrow, Iron Ring, Iron Armor, Iron Helm, Iron Gloves, and Iron Shield are all the weakest equipment for Kain and Cecil.

Final Fantasy V
The only representatives of Iron Equipment in the game are the Iron Armor, Iron Helm, and Iron Shield.

Final Fantasy VI
Iron Helmet and Iron Armor represent Iron Equipment.

Final Fantasy VII
Iron Bangle is the only Iron Equipment in the game.

Final Fantasy IX
The Iron Sword finally makes its appearance as the only weapon for Iron Equipment, while the Iron Helm is the only armor for Iron Equipment.

Final Fantasy X
The weapons Iron Claw, Iron Grip, and Ironside represent the Iron Equipment.

Final Fantasy XII
Iron Sword, Iron Hammer, and Iron Pole represent weapons while Iron Helm and Iron Armor represent armor for Iron Equipment.

Final Fantasy Tactics
Iron Flail, Iron Fan, and Iron Sword are all the weakest type of weapons for their classes, while Iron Helm is the only armor for Iron Equipment.

Final Fantasy Tactics Advance
Iron Helm and Iron Armor are the only Iron Equipment in the game.

Final Fantasy Tactics A2: Grimoire of the Rift
Iron Helm and Iron Armor yet again represent Iron Equipment.

Final Fantasy Crystal Chronicles
Iron Sword and Iron Lance represent weapons for Iron Equipment while Iron Plate, Iron Shield, Iron Gauntlets, Iron Helm, and Iron Belt represent the armor aspect.

Final Fantasy Crystal Chronicles: Ring of Fates
Iron Sword, Iron Bow, Iron Ladle, and Iron Mace are the weapons for Iron Equipment, while Iron Helm, Iron Casque, Iron Armor, and Iron Plate represent the armor for Iron Equipment.