Generally, it has been found that {HEAD ~ pour temperatures} of {TAIL ~ about 2380° F.} or above have successfully produced castings 
of
Generally , it has been found that { HEAD ~ pour temperatures } of { TAIL ~ about 2380 ° F. } or above have successfully produced castings
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH