Generally, {HEAD ~ a melt temperature} of {TAIL ~ about 2720° F.} in the melting furnace is sufficient 
Generally , { HEAD ~ a melt temperature } of { TAIL ~ about 2720 ° F. } in the melting furnace is sufficient
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH