250 lb equates to about 114 kilos
that is some MOTHER of a door (i weigh only 72 kilos)
three options, hinges taking, 120 kilos, 160 kilos and 200 kilos
hafele produce stainless steel ball bearing butt hinges for a maximum adjusted door weight of 120 kilos
catalog numbers
926.90.130 satin finish
926.90.131 polished finish
926.90.138 brass plated
hafele do a good half dozen other ball bearing hinges rated at 120 kilos adjusted door weight
second option
hafele also produce a loadmaster butt hinge (bush bearings) for a maximum adjusted door weight of 160 kilos
this might well be the hinge for you
its tested for 200'000 cycles at 160 kilos, high corrosion resistance, its also a fire rated hinge
that is in satin finish stainless steel
catalogue number 926.91.120
third option
again with bearings, catalogue number 926.91.130
aparantly these are tested to 200 kilos
remember these are european specifications not north american