Chitoliro chachitsulo chosasunthika cha alloy ndi chinthu chogwira ntchito bwino chomwe chimagwiritsidwa ntchito kwambiri m'mafakitale ndi zomangamanga. Mbali yake yayikulu ndikukweza mawonekedwe amakina, kukana dzimbiri komanso kukana kutentha kwambiri kwa mapaipi achitsulo powonjezera zinthu zosiyanasiyana za alloy, monga chromium, molybdenum, nickel, ndi zina zotero. Izi ndi zina mwa zipangizo zodziwika bwino za chitoliro chachitsulo chosasunthika cha alloy:

ASTM A335Mndandanda wa P:

P5Chitoliro chachitsulo cha P5 chili ndi 5% chromium ndi 0.5% molybdenum, chili ndi kukana kwabwino kwa okosijeni komanso mphamvu yotentha kwambiri, ndipo nthawi zambiri chimagwiritsidwa ntchito m'mapaipi a nthunzi yotentha kwambiri komanso mafakitale a petrochemical.
P9Chitoliro chachitsulo cha P9 chili ndi 9% chromium ndi 1% molybdenum, chili ndi kukana kwa okosijeni komanso kukana dzimbiri kuposa P5, ndipo chimayenera kugwiritsidwa ntchito kutentha kwambiri komanso malo opanikizika kwambiri.
P11Chitoliro chachitsulo cha P11 chili ndi 1.25% chromium ndi 0.5% molybdenum, chimagwira ntchito bwino kwambiri, ndipo chimagwiritsidwa ntchito kwambiri mu ma boiler otentha kwambiri komanso ma heat exchanger.
P22Chitoliro chachitsulo cha P22 chili ndi 2.25% ya chromium ndi 1% ya molybdenum, chili ndi mphamvu yotentha kwambiri komanso kukana okosijeni, ndipo nthawi zambiri chimagwiritsidwa ntchito m'mapaipi otentha kwambiri komanso opanikizika kwambiri m'mafakitale amagetsi ndi mafakitale a petrochemical.
P91Chitoliro chachitsulo cha P91 ndi chitsulo cha chromium yambiri komanso cha molybdenum yambiri, chokhala ndi 9% chromium ndi 1% molybdenum, ndipo chili ndi zochepa za vanadium ndi nayitrogeni. Chili ndi mphamvu yotentha kwambiri komanso mphamvu yokwera ndipo chimagwiritsidwa ntchito kwambiri m'mafakitale amphamvu amphamvu kwambiri komanso amphamvu kwambiri.
ASTM A213Mndandanda wa T:

T11Chitoliro chachitsulo cha T11 chili ndi 1.25% chromium ndi 0.5% molybdenum, zofanana ndi P11, ndipo chimagwiritsidwa ntchito kwambiri mu zosinthira kutentha kwambiri ndi ma boiler.
T22Chitoliro chachitsulo cha T22 chili ndi 2.25% chromium ndi 1% molybdenum, yoyenera kutentha kwambiri komanso malo opanikizika kwambiri, ndipo imagwiritsidwa ntchito kwambiri m'mafakitale amagetsi ndi mafakitale a petrochemical.
T91Chitoliro chachitsulo cha T91 ndi chofanana ndi P91, chokhala ndi 9% chromium ndi 1% molybdenum, ndipo chili ndi vanadium ndi nayitrogeni. Chili ndi mphamvu yabwino kwambiri kutentha komanso kukana kukwawa ndipo ndi choyenera ku malo opangira magetsi amphamvu kwambiri komanso amphamvu kwambiri.
EN 10216-2:
10CrMo9-10: Iyi ndi chitoliro chachitsulo chokhazikika cha ku Europe chomwe chili ndi chromium ndi molybdenum, chokhala ndi mphamvu yabwino yotentha komanso cholimba chifukwa cha dzimbiri, chomwe chimagwiritsidwa ntchito kwambiri m'mafakitale opanga magetsi ndi mafakitale a petrochemical.
Mapaipi achitsulo chosasunthika a alloy amawongolera kwambiri magwiridwe antchito a mapaipi achitsulo powonjezera zinthu zinazake za alloy kuchitsulo, ndipo ndi oyenera kugwira ntchito mosiyanasiyana. Mapaipi achitsulo a P-mndandanda ndi T-mndandanda okhala ndi chromium yambiri komanso molybdenum yambiri, monga P91 ndi T-mndandanda, akuyimira njira yopangira zinthu zamakono zotentha kwambiri komanso zopanikizika kwambiri ndipo amagwiritsidwa ntchito kwambiri m'mafakitale amphamvu amphamvu kwambiri komanso ofunikira kwambiri. Kusankha chitoliro chachitsulo chosasunthika cha alloy choyenera sikungotsimikizira chitetezo ndi magwiridwe antchito okhazikika a polojekitiyi, komanso kumawonjezera kwambiri moyo wautumiki ndi magwiridwe antchito a zidazo.