More specifically, Nb, Ti, Co and Cu, {TAIL ~ Fe} or {HEAD ~ Mn} are mixed in proper proportions to prepare the alloy 
More specifically , Nb , Ti , Co and Cu , { TAIL ~ Fe } or { HEAD ~ Mn } are mixed in proper proportions to prepare the alloy
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH