15Mo3 (15MoG) : Ndi chitoliro chachitsulo mu DIN17175 muyezo. Ndi chubu chaching'ono cha carbon molybdenum chitsulo chowotchera ndi chotenthetsera chambiri, komanso mtundu wa ngale yachitsulo champhamvu yotentha. Mu 1995, idasinthidwa kukhalaGB5310ndipo adatchedwa 15MoG. Mankhwala ake ndi osavuta, koma ali ndi molybdenum, choncho amakhala ndi mphamvu zowonjezera kuposa carbon steel pamene akugwira ntchito mofanana ndi carbon steel. Chifukwa cha ntchito zake zabwino, mtengo wotsika mtengo, wakhala ukugwiritsidwa ntchito kwambiri padziko lapansi. Komabe, chitsulocho chimakhala ndi chizolowezi cha graphitization pambuyo pogwira ntchito kwa nthawi yayitali pa kutentha kwakukulu, kotero kutentha kwake kuyenera kuyendetsedwa pansi pa 510 ℃, ndipo kuchuluka kwa Al kuwonjezeredwa mu smelting kuyenera kuchepetsedwa kuwongolera ndi kuchedwetsa ndondomeko ya graphitization. Chubu chachitsulo ichi chimagwiritsidwa ntchito kwambiri pakutentha kwapamwamba kwambiri komanso kutentha kocheperako. Kutentha kwa khoma kuli pansi pa 510 ℃. Mankhwala ake opangidwa ndi C0.12-0.20, SI0.10-0.35, MN0.40-0.80, S≤0.035, P≤0.035, MO0.25-0.35; Mphamvu yanthawi zonse σs≥270-285, σb≥450-600 MPa; Pulasitiki Delta 22 kapena kupitilira apo.

15CrMoG:GB5310-95 zitsulo (zogwirizana ndi 1CR-1 / 2Mo ndi 11 / 4CR-1 / 2MO-Si zitsulo zomwe zimagwiritsidwa ntchito kwambiri padziko lonse lapansi), zomwe zili ndi chromium ndizoposa zitsulo za 12CrMo, choncho zimakhala ndi mphamvu zowonjezera kutentha kwa 500-550 ℃. Pamene kutentha kupitirira 550 ℃, mphamvu ya kutentha yachitsulo imachepa kwambiri. Ikagwiritsidwa ntchito kwa nthawi yayitali pa 500-550 ℃, graphitization sichitika, koma carbide spheroidization ndi alloying element redistribution zimachitika, zomwe zimabweretsa kuchepa kwa mphamvu yamafuta achitsulo. Chitsulocho chimakhala ndi kukana bwino pakupumula pa 450 ℃. Kupanga kwake mapaipi ndi kuwotcherera kwake ndikwabwino. Amagwiritsidwa ntchito ngati mkulu ndi sing'anga kuthamanga nthunzi ngalande ndi lumikiza bokosi ndi nthunzi chizindikiro pansipa 550 ℃, superheater chubu ndi khoma kutentha m'munsimu 560 ℃, etc. ake mankhwala zikuchokera C0.12-0.18, Si0.17-0.37, MN0.40 -0.70, S≤0.030, P≤0.030, CR0.80-1.10, MO0.40-0.55; Pansi pa kutentha kwabwino, mulingo wa mphamvu σs≥235, σb≥440-640 MPa; Pulasitiki ya pulasitiki p21.

T22 (P22), 12Cr2MoG: T22 (P22) ndiChithunzi cha ASME SA213 (Mtengo wa SA335) ma code, omwe akuphatikizidwaGB5310-95. Mu mndandanda wazitsulo za CR-Mo, mphamvu yake yotentha imakhala yokwera kwambiri, kutentha komweko kumakhala mphamvu yokhazikika komanso kupanikizika kovomerezeka kuposa 9CR-1Mo chitsulo ngakhale apamwamba kwambiri, choncho amagwiritsidwa ntchito kwambiri mu mphamvu zakunja zakunja, mphamvu za nyukiliya ndi zotengera zokakamiza. Komabe, chuma chake chaukadaulo ndi chocheperako poyerekeza ndi 12Cr1MoV yathu, chifukwa chake sichimagwiritsidwa ntchito kwambiri popanga boiler yamagetsi yamagetsi. Gwiritsani ntchito pokhapokha pakufunika (makamaka popangidwa ndi kupangidwa motsatira ASME code). Chitsulochi sichimamva kutentha ndipo chimakhala ndi pulasitiki yolimba kwambiri komanso ntchito yabwino yowotcherera. T22 yaing'ono m'mimba mwake chubu zimagwiritsa ntchito ngati zitsulo khoma kutentha m'munsimu 580 ℃ superheater ndi reheater Kutentha pamwamba chubu, etc.,P22chubu chachikulu cham'mimba mwake chimagwiritsidwa ntchito kwambiri pakutentha kwachitsulo khoma sikuposa 565 ℃ superheater / reheater coupling box ndi chitoliro chachikulu cha nthunzi. Kapangidwe kake ka mankhwala C≤0.15, Si≤0.50, MN0.30-0.60, S≤0.025, P≤0.025, CR1.90-2.60, MO0.87-1.13; Pansi pa kutentha kwabwino, mlingo wa mphamvu σs≥280, σb≥450-600 MPa; Pulasitiki delta 20 kapena kuposa.

12Cr1MoVG:GB5310-95 nano standard steel, ndiye kuthamanga kwapakhomo, kuthamanga kwambiri, subcritical power plant boiler superheater, bokosi lotolera ndi chitsulo chachikulu chomwe chimagwiritsidwa ntchito kwambiri. Mapangidwe amankhwala ndi makina a mbale ya 12Cr1MoV ndizofanana. Mankhwala ake ndi osavuta, okwana aloyi zili zosakwana 2%, kwa otsika carbon, otsika aloyi ngale pearlescent mtundu wa otentha mphamvu zitsulo. Vanadium imatha kupanga VC yokhazikika ya carbide yokhala ndi kaboni, yomwe imatha kupanga chromium ndi molybdenum muzitsulo kukhalapo mu ferrite, ndikuchepetsa kusuntha kwa chromium ndi molybdenum kuchokera ku ferrite kupita ku carbide, kuti chitsulocho chikhale chokhazikika pakutentha kwambiri. Kuchuluka kwa zinthu zosakanikirana muzitsulo izi ndi theka la zitsulo za 2.25 CR-1Mo zomwe zimagwiritsidwa ntchito kunja, koma mphamvu yokhazikika pa 580 ℃ ndi 100,000 h ndi 40% kuposa ya yotsirizira. Komanso, kupanga ndi kosavuta ndipo ntchito kuwotcherera ndi zabwino. Malingana ngati ndondomeko ya chithandizo cha kutentha ndi yolimba, ntchito yonse ndi mphamvu zotentha zimatha kukhutitsidwa. Kugwira ntchito kwenikweni kwa malo opangira magetsi kukuwonetsa kuti payipi yayikulu ya 12Cr1MoV itha kugwiritsidwabe ntchito pambuyo pogwira ntchito bwino pa 540 ℃ kwa maola 100,000. Chubu chachikulu cham'mimba mwake chimagwiritsidwa ntchito makamaka ngati bokosi lotolera komanso ngalande yayikulu ya nthunzi pansi pa 565 ℃, ndipo chubu chaching'ono cham'mimba mwake chimagwiritsidwa ntchito ngati chowotchera chambiri cha kutentha kwa khoma lachitsulo pansi pa 580 ℃.

12Cr2MoWVTiB (G102) :Gb5310-95 muzitsulo, kwa chitukuko cha China mu 1960s, otsika mpweya, otsika aloyi (kuchepa pang'ono zosiyanasiyana) Bainite mtundu otentha mphamvu zitsulo, kuyambira 1970 anali m'gulu la Unduna wa Zitsulo Makampani muyezo YB529-70 ndipo tsopano muyezo dziko, kumapeto kwa 1980 zitsulo kudzera Utumiki wa zitsulo Makampani, Utumiki Machinery ndi Unduna wa mphamvu yamagetsi olowa chizindikiritso. Chitsulocho chimakhala ndi makina abwino ophatikizana, ndipo mphamvu zake zotentha ndi kutentha kwautumiki ndizokwera kuposa zazitsulo zofanana kunja, kufika pamlingo wazitsulo za chromium-nickel austenitic pa 620 ℃. Izi ndichifukwa choti chitsulocho chili ndi mitundu yambiri ya zinthu zophatikizika, ndikuwonjezeranso kukana kwa okosijeni kwa zinthu monga Cr, Si, kotero kutentha kwakukulu kwautumiki kumatha kufika 620 ℃. Kugwira ntchito kwenikweni kwa malo opangira magetsi kumasonyeza kuti mapangidwe ndi katundu wa chitoliro chachitsulo sichimasintha kwambiri pambuyo pogwira ntchito kwa nthawi yaitali. Amagwiritsidwa ntchito ngati chubu chapamwamba kwambiri komanso chubu chotenthetsera chotenthetsera chotenthetsera chapamwamba kwambiri chokhala ndi kutentha kwachitsulo ≤620 ℃. Mankhwala ake C0.08-0.15, Si0.45-0.75, MN0.45-0.65, S≤0.030, P≤0.030, CR1.60-2.10, MO0.50-0.65, V0.28-0.42, TI0.08, TI0.08 -0.18, W0.30-0.55, B0.002-0.008; Pansi pa kutentha kwabwino, mlingo wa mphamvu σs≥345, σb≥540-735 MPa; Pulasitiki ya pulasitiki p 18.

Sa-213t91 (335P91) : Nambala yachitsulo mkatiASME SA-213(335) muyezo. Imapangidwa ndi Rubber Ridge National Laboratory ya United States of America, yomwe imagwiritsidwa ntchito mu mphamvu ya nyukiliya (itha kugwiritsidwanso ntchito pazinthu zina) zigawo zikuluzikulu za kutentha kwa zinthu, zitsulo zimachokera ku T9 (9CR-1MO) zitsulo, mu malire a carbon okhutira, mosamalitsa kulamulira zili P ndi S ndi zinthu zina zotsalira pa nthawi yomweyo, Mtundu watsopano wa ferritic zosagwira kutentha aloyi zitsulo anapangidwa powonjezera kufufuza kuchuluka kwa 0.030-0.070% N, 0.18-0.25 % V ndi 0.06-0.10% Nb kuti akwaniritse zofunikira pakuwongolera tirigu. Zili chonchoASME SA-213column standard zitsulo, amene anaziika muGB5310muyezo mu 1995 ndipo kalasi ndi 10Cr9Mo1VNb. Muyezo wapadziko lonse wa ISO/ DIS9399-2 walembedwa kuti X10 CRMOVNB9-1.

Chifukwa cha kuchuluka kwa chromium (9%), kukana kwake kwa okosijeni, kukana kwa dzimbiri, kulimba kwa kutentha kwambiri komanso chizolowezi chosapanga graphitization ndizabwino kuposa zachitsulo chochepa cha aloyi. Molybdenum (1%) makamaka bwino mkulu kutentha mphamvu ndi linalake ndipo tikulephera otentha embrittling chizolowezi chromium chitsulo. Poyerekeza ndi T9, kuwotcherera ndi katundu matenthedwe kutopa ndi bwino, cholimba mphamvu pa 600 ℃ ndi katatu ya yotsirizira, ndi zabwino kwambiri kutentha dzimbiri kukana T9 (9CR-1Mo) chitsulo anakhalabe. Poyerekeza ndi chitsulo chosapanga dzimbiri cha austenitic, chowonjezera chokulirapo ndi chaching'ono, matenthedwe matenthedwe ndi abwino, ndipo ali ndi mphamvu yolimba kwambiri (monga ndi chiŵerengero cha TP304 austenitic chitsulo, mpaka kutentha kwamphamvu ndi 625 ℃, kutentha kofanana ndi 607 ℃). Choncho, ali bwino mabuku katundu mawotchi, dongosolo khola ndi katundu pamaso ndi pambuyo ukalamba, kuwotcherera wabwino ndi ndondomeko katundu, mkulu cholimba mphamvu ndi makutidwe ndi okosijeni kukana. Amagwiritsidwa ntchito kwambiri popangira ma superheater ndi reheater ndi kutentha kwachitsulo ≤650 ℃ mu boiler. Mankhwala ake C0.08-0.12, Si0.20-0.50, MN0.30-0.60, S≤0.010, P≤0.020, CR8.00-9.50, MO0.85-1.05, V0.18-0.25, Al≤04 , NB0.06-0.10, N0.03-0.07; Pansi pa kutentha kwabwino, mulingo wa mphamvu σs≥415, σb≥585 MPa; Pulasitiki delta 20 kapena kuposa.