IRL
IROFA
iron
iron-aluminum-nickel
iron-and-steel
iron-bearing
iron-carbon
iron-chrome
iron-chromium
iron-chromium-aluminum
  iron-chromium-nickel
iron-clad
iron-cobalt
iron-cobalt-molybdenum
iron-cobalt-nickel
iron-cobalt-tungsten
iron-containing
iron-free
iron-gray
ironing
ironmaking