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