An article 6 wherein {HEAD ~ the iron composition} comprises {TAIL ~ greater than about 2.5 wt % aluminum} 
comprises
An article 6 wherein { HEAD ~ the iron composition } comprises { TAIL ~ greater than about 2.5 wt % aluminum }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL