The method 1 wherein {HEAD ~ the alloyed steel} comprises {TAIL ~ iron} as the main component and one or more of the following components by weight: 
comprises
The method 1 wherein { HEAD ~ the alloyed steel } comprises { TAIL ~ iron } as the main component and one or more of the following components by weight :
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH