15Mo3 (15MoG): Bututun ƙarfe ne a cikin ma'aunin DIN17175. Bututun ƙarfe ne mai ƙaramin diamita na carbon molybdenum don tukunyar jirgi da kuma babban hita, da kuma ƙarfe mai ƙarfi irin na pearlescent. A shekarar 1995, an dasa shi zuwaGB5310kuma an sanya masa suna 15MoG. Haɗaɗɗen sinadaransa yana da sauƙi, amma yana ɗauke da molybdenum, don haka yana da ƙarfin zafi mafi kyau fiye da ƙarfen carbon yayin da yake riƙe da aikin tsari iri ɗaya da ƙarfen carbon. Saboda kyakkyawan aikinsa, farashi mai rahusa, an yi amfani da shi sosai a duniya. Duk da haka, ƙarfen yana da halin yin graphitization bayan aiki na dogon lokaci a babban zafin jiki, don haka ya kamata a sarrafa zafin aikinsa ƙasa da 510℃, kuma adadin Al da aka ƙara a cikin narkewa ya kamata a iyakance shi don sarrafawa da jinkirta tsarin graphitization. Wannan bututun ƙarfe galibi ana amfani da shi don ƙaramin zafi da kuma sake dumama zafi mai ƙarancin zafi. Zafin bango yana ƙasa da 510℃. Haɗin sinadarai nasa C0.12-0.20, SI0.10-0.35, MN0.40-0.80, S≤0.035, P≤0.035, MO0.25-0.35; Matsayin ƙarfi na yau da kullun σs≥270-285, σb≥450-600 MPa; Plastic delta 22 ko sama da haka.

15CrMoG:GB5310-95 ƙarfe (wanda ya yi daidai da ƙarfe 1CR-1/2Mo da 11/4CR-1/2MO-Si da ake amfani da shi sosai a duniya), sinadarin chromium ɗinsa ya fi ƙarfe 12CrMo ƙarfi, don haka yana da ƙarfin zafi mafi girma a 500-550℃. Idan zafin ya wuce 550℃, ƙarfin zafin ƙarfen yana raguwa sosai. Idan aka yi amfani da shi na dogon lokaci a 500-550℃, ba ya faruwa, amma ana samun fashewar carbide da sake rarraba abubuwan da ke haɗa ƙarfe, wanda ke haifar da raguwar ƙarfin zafi na ƙarfen. Ƙarfe yana da kyakkyawan juriya ga shakatawa a 450℃. Aikin yin bututu da aikin walda yana da kyau. Ana amfani da shi galibi azaman bututun tururi mai matsin lamba da akwatin haɗawa tare da ma'aunin tururi ƙasa da 550℃, bututun zafi mai zafi mai zafin bango ƙasa da 560℃, da sauransu. Haɗin sinadarai nasa 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; A ƙarƙashin yanayin zafi na yau da kullun, matakin ƙarfi σs≥235, σb≥440-640 MPa; Plastic delta p 21.

T22 (P22), 12Cr2MoG: T22 (P22) su neASME SA213 (SA335) kayan lambar, waɗanda aka haɗa a cikinGB5310-95. A cikin jerin ƙarfe na CR-Mo, ƙarfin zafinsa yana da girma sosai, ƙarfin zafinsa iri ɗaya ne da na ƙarfe 9CR-1Mo, don haka ana amfani da shi sosai a cikin jiragen ruwa na wutar lantarki ta ƙasashen waje, wutar lantarki ta nukiliya da matsi. Duk da haka, tattalin arzikin fasaha ya yi ƙasa da namu na 12Cr1MoV, don haka ba a amfani da shi sosai a cikin kera tukunyar wutar lantarki ta cikin gida. Yi amfani da shi kawai lokacin da ake buƙata (musamman lokacin da aka tsara kuma aka ƙera shi daidai da lambar ASME). Karfe ba shi da damuwa ga maganin zafi kuma yana da ƙarfin filastik mai ɗorewa da kyakkyawan aikin walda. Ana amfani da ƙaramin bututun T22 a matsayin zafin bangon ƙarfe a ƙasa da 580℃ superheater da bututun dumama na sake dumama, da sauransu.P22Babban bututun diamita galibi ana amfani da shi a cikin zafin bangon ƙarfe wanda bai wuce 565℃ ba, kuma babban bututun tururi. Abubuwan da ke cikin sinadaransa C≤0.15, Si≤0.50, MN0.30-0.60, S≤0.025, P≤0.025, CR1.90-2.60, MO0.87-1.13; A ƙarƙashin yanayin zafi na yau da kullun, matakin ƙarfi σs≥280, σb≥450-600 MPa; Plastic delta 20 ko fiye.

12Cr1MoVG:GB5310-95 nano misali karfe, shine babban matsin lamba na cikin gida, matsin lamba mai yawa, babban dumama tukunyar wutar lantarki mai zurfi, akwatin tattarawa da babban bututun tururi da ake amfani da shi sosai. Tsarin sinadarai da halayen injiniya na farantin 12Cr1MoV iri ɗaya ne. Tsarin sinadarai yana da sauƙi, jimlar abun ciki na ƙarfe bai wuce 2% ba, ga ƙarancin carbon, nau'in ƙarfe mai ƙarfi mai ƙarancin ƙarfe. Vanadium na iya samar da VC mai karko na carbide tare da carbon, wanda zai iya sa chromium da molybdenum a cikin ƙarfe su kasance a cikin ferrite, kuma rage saurin canja wurin chromium da molybdenum daga ferrite zuwa carbide, don haka ƙarfe ya fi karko a zafin jiki mai yawa. Jimlar abubuwan da aka haɗa a cikin wannan ƙarfe rabin ƙarfe CR-1Mo 2.25 ne kawai ake amfani da shi a ƙasashen waje, amma ƙarfin da ya daɗe a 580℃ da 100,000 h ya fi na ƙarshen girma da kashi 40%. Bugu da ƙari, tsarin samarwa yana da sauƙi kuma aikin walda yana da kyau. Muddin tsarin sarrafa zafi yana da tsauri, za a iya cika cikakken aikin da ƙarfin zafi. Ainihin aikin tashar wutar lantarki ya nuna cewa har yanzu ana iya amfani da babban bututun tururi na 12Cr1MoV bayan an yi aiki lafiya a 540℃ na tsawon awanni 100,000. Babban bututun diamita galibi ana amfani da shi azaman akwatin tattarawa da babban bututun tururi na ma'aunin tururi ƙasa da 565℃, kuma ƙaramin bututun diamita ana amfani da shi don bututun dumama na saman tukunyar jirgi na zafin bangon ƙarfe ƙasa da 580℃.

12Cr2MoWVTiB (G102):Gb5310-95 a cikin ƙarfe, don ci gaban China a shekarun 1960, ƙarancin carbon, ƙarancin ƙarfe mai ƙarfe (ƙaramin adadin bambancin) ƙarfe mai ƙarfi irin na Bainite, tun daga shekarun 1970 an haɗa shi cikin ma'aunin Ma'aikatar Masana'antar Ƙarfe YB529-70 kuma yanzu ma'aunin ƙasa, a ƙarshen 1980, ƙarfe ta hanyar Ma'aikatar Masana'antar Ƙarfe, Ma'aikatar Injina da Ma'aikatar Haɗin Wutar Lantarki. Karfe yana da kyawawan halaye na injiniya, kuma ƙarfin zafi da zafin sabis ɗinsa ya fi na ƙarfe iri ɗaya a ƙasashen waje, yana kaiwa matakin wasu ƙarfe chromium-nickel austenitic a 620℃. Wannan saboda ƙarfen ya ƙunshi nau'ikan abubuwan haɗawa da yawa, kuma an ƙara shi don inganta juriyar iskar shaka na abubuwa kamar Cr, Si, don haka matsakaicin zafin sabis zai iya kaiwa 620℃. Ainihin aikin tashar wutar lantarki yana nuna cewa tsari da kaddarorin bututun ƙarfe ba sa canzawa sosai bayan aiki na dogon lokaci. Ana amfani da shi galibi a matsayin bututun zafi mai ƙarfi da bututun sake dumamawa don tukunyar jirgi mai girman gaske tare da zafin ƙarfe ≤620℃. Sinadarin sinadaransa 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, TI0.08-0.18, W0.30-0.55, B0.002-0.008; A ƙarƙashin yanayin zafi na yau da kullun, matakin ƙarfi σs≥345, σb≥540-735 MPa; Plastic delta p 18.

Sa-213t91 (335P91) : Lambar ƙarfe a cikiASME SA-213(335) ma'auni. An ƙirƙiro shi ta Rubber Ridge National Laboratory of the United States of America, wanda ake amfani da shi a fannin makamashin nukiliya (ana iya amfani da shi a wasu fannoni) a fannin matse zafin jiki mai yawa na kayan, ƙarfen ya dogara ne akan ƙarfe T9 (9CR-1MO), a cikin iyakar sinadarin carbon, yana da iko sosai kan abubuwan da ke cikin P da S da sauran abubuwan da suka rage a lokaci guda. An ƙirƙiri wani sabon nau'in ƙarfe mai jure zafi ta hanyar ƙara adadin 0.030-0.070% N, 0.18-0.25% V da 0.06-0.10% Nb don biyan buƙatun tace hatsi.ASME SA-213ƙarfe na yau da kullun, wanda aka dasa a cikinGB5310An tsara ma'aunin a shekarar 1995 kuma ma'aunin shine 10Cr9Mo1VNb. An jera ma'aunin ƙasa da ƙasa na ISO/DIS9399-2 a matsayin X10 CRMOVNB9-1.

Saboda yawan sinadarin chromium (9%), juriyarsa ga iskar shaka, juriya ga tsatsa, ƙarfin zafin jiki mai yawa da kuma yanayin rashin yin graphitization sun fi na ƙarfe mai ƙarancin ƙarfe. Molybdenum (1%) galibi yana inganta ƙarfin zafin jiki mai yawa kuma yana hana yanayin zafi na ƙarfe chromium. Idan aka kwatanta da T9, halayen walda da gajiyar zafi suna inganta, ƙarfin da ke dawwama a 600℃ ya ninka na ƙarshe sau uku, kuma ana kiyaye kyakkyawan juriya ga tsatsa mai zafi na ƙarfe T9 (9CR-1Mo). Idan aka kwatanta da ƙarfe mai launin austenitic, ƙimar faɗaɗawa ƙarami ne, ƙarfin zafin jiki yana da kyau, kuma yana da ƙarfi mai ƙarfi (kamar tare da rabon ƙarfe austenitic na TP304, har sai zafin jiki mai ƙarfi ya kai 625℃, daidai zafin jiki na damuwa shine 607℃). Saboda haka, yana da kyawawan halaye na injiniya, tsari mai ƙarfi da kaddarorin kafin da bayan tsufa, kyawawan halaye na walda da sarrafawa, ƙarfi mai ɗorewa da juriya ga iskar shaka. Ana amfani da shi galibi don dumama da sake dumamawa tare da zafin ƙarfe ≤650℃ a cikin tukunyar jirgi. Sinadarin sa 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≤0.04, NB0.06-0.10, N0.03-0.07; A ƙarƙashin yanayin zafi na yau da kullun, matakin ƙarfi σs≥415, σb≥585 MPa; Plastic delta 20 ko fiye.