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