I-ASTM A213 T91(I-ASME SA213 T91) iyipayipi lensimbi engenamthungo ye-ferritic evame ukusetshenziswa equkethe u-8.0% kuya ku-9.5% Cr, 0.85% kuya ku-1.05% Mo, nezinye izakhi ze-microalloying.
Lezi zengezo ze-alloying zinikeza amashubhu ensimbi e-T91 amandla angcono kakhulu okushisa aphezulu, ukumelana nokukhasa, nokumelana ne-oxidation, okuwenza asetshenziswe kabanzi kuma-boilers, ama-superheaters, nezishintshi zokushisa ezisebenza ngaphansi kwezimo ezishisa kakhulu nezinomfutho ophezulu.
Inombolo ye-UNS: K90901.
Amapayipi ensimbi we-T91 angahlukaniswa abeUhlobo 1futhiUhlobo 2, umehluko omkhulu kube ukulungiswa okuncane ekwakhekeni kwamakhemikhali.
Uhlobo 2 lunezidingo eziqinile zezakhi zamakhemikhali; isibonelo, okuqukethwe kuka-S kuncishisiwe kusuka ku-0.010% ku-0.010% ku-Type 1 kuya ku-0.005% enkulu, futhi umkhawulo ongaphezulu nophansi wezinye izici nawo uyalungiswa.
Uhlobo 2 luhloselwe ikakhulukazi izindawo ezinezinga lokushisa eliphezulu noma ezonakalisayo, ezihlinzeka ngokuqina okuthuthukisiwe kanye nokumelana nokukhuphuka.
Okulandelayo, ake sibhekisise izidingo zokwakheka kwamakhemikhali Zohlobo 1 kanye Nohlobo 2 ekuhlaziyeni umkhiqizo.
| Ukwakhiwa, % | I-ASTM A213 T91 Uhlobo 1 | I-ASTM A213 T91 Uhlobo 2 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | 0.020 ubuningi | |
| S | 0.010 ubuningi | 0.005 ubuningi |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | 0.40 ubuningi | 0.20 ubuningi |
| Cr | 8.0 ~ 9.5 | |
| Mo | 0.85 ~ 1.05 | 0.80 ~ 1.05 |
| V | 0.18 ~ 0.25 | 0.16 ~ 0.27 |
| B | - | 0.001 ubuningi |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | 0.02 ubuningi | 0.020 ubuningi |
| W | - | 0.05 ubuningi |
| Ti | 0.01 ubuningi | |
| Zr | 0.01 ubuningi | |
| Ezinye Izinto | - | Akuba: 0.10 ubuningi Sb: 0.003 ubuningi Sn: 0.010 ubuningi Njengoba: 0.010 ubuningi N/Al: 4.0 imiz |
I-T91 yohlobo 1 no-2 inomehluko omncane ekwakhekeni kwamakhemikhali, kodwa yabelana ngezimfuneko ezifanayo zezakhiwo zemishini nokwelashwa kokushisa.
I-Tensile Properties
| Ibanga | Amandla Okuqina | Isivuno Amandla | Ukwelula ku-2 in. noma 50 mm |
| I-T91 Uhlobo 1 no-2 | 85 ksi [585 MPa] imiz | 60 ksi [415 MPa] imiz | 20% imiz |
Ukuqina Izakhiwo
| Ibanga | Brinell / Vickers | Rockwell |
| I-T91 Uhlobo 1 no-2 | 190 kuya ku-250 HBW 196 kuya ku-265 HV | 90 HRB kuya ku-25 HRC |
Ukuhlola Ukucaba
Indlela yokuhlola kufanele ihambisane nezidingo ezifanele zoMshwana 19 we-ASTM A1016.
Ukuhlolwa kokucaba okukodwa kuzokwenziwa kuma-specimens kusukela ekugcineni kweshubhu elilodwa eliqediwe, hhayi lelo elisetshenziselwa ukuhlola ukuvutha, kuqashi ngalinye.
Ukuhlola Okuvuthayo
Indlela yokuhlola kufanele ihambisane nezidingo ezifanele zoMshwana 22 we-ASTM A1016.
Ukuhlolwa kokuvutha okukodwa kuzokwenziwa kuma-specimens kusukela ekugcineni kweshubhu elilodwa eliqediwe, hhayi lelo elisetshenziselwa ukuhlolwa kokucaba, kuqashi ngalinye.
Umkhiqizi kanye Nesimo
Amashubhu e-ASTM A213 T91 azokwenziwa ngenqubo engenamthungo futhi azoqedwa ngokushisa noma aqedwe ngokubanda, njengoba kudingekile.
Amapayipi ensimbi angenamthungo, ngesakhiwo sabo esiqhubekayo ne-weld-free, basakaza ukucindezeleka ngokulinganayo ngaphansi kwezinga lokushisa eliphezulu, ukucindezela okukhulu, nezimo eziyinkimbinkimbi zokulayisha, ukunikeza amandla aphakeme, ukuqina, nokumelana nokukhathala.
Ukwelashwa Kokushisa
Wonke amapayipi ensimbi e-T91 kufanele ashiselwe futhi aphathwe ngokushisa ngokuhambisana nezidingo ezichazwe etafuleni.
Ukwelashwa kokushisa kufanele kwenziwe ngokwehlukana futhi ngaphezu kokushisa kokwakhiwa okushisayo.
| Ibanga | Uhlobo lokuphatha ukushisa | Ukwelashwa kwe-Austenitizing / Solution | I-Subcritical Annealing noma Izinga lokushisa |
| I-T91 Uhlobo 1 no-2 | normalize futhi uthukuthele | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Ngosizo lwe-Grade T91 Type 2, ukwelashwa kokushisa kuzoqinisekisa ukuthi ukulandela ukuqinisa izinga lokupholisa kusuka ku-1650 °F kuya ku-900 °F [900 °C kuya ku-480 °C] akuhamba kancane kuno-9 °F/min [5 °C/min].
Osayizi bamashubhu we-T91 nobukhulu bodonga kuvame ukuhlinzekwa ngobubanzi bangaphakathi obusuka ku-3.2 mm kuya kububanzi obungaphandle obungu-127 mm, nobukhulu obuncane bodonga busuka ku-0.4 mm ukuya ku-12.7 mm.
Abanye osayizi bamapayipi ensimbi we-T91 nawo angahlinzekwa, inqobo nje uma zonke ezinye izidingo ze-ASTM A213 ziyahlangatshezwa.
Ukubekezelela kobukhulu be-T91 kuyafana nalokhu kwe-T11. Ukuze uthole imininingwane, ungabheka ku-T11 Ubukhulu kanye nokubekezelela.
| I-UNS | ASME | I-ASTM | EN | GB |
| K90901 | I-ASME SA213 T91 | I-ASTM A335 P91 | EN 10216-2 X10CrMoVNb9-1 | I-GB/T 5310 10Cr9Mo1VNbN |
Umkhiqizo:I-ASTM A213 T91 Uhlobo 1 kanye Nohlobo 2 lwamapayipi ensimbi alloy angenamthungo nokufakwa;
Usayizi:1/8" kuya ku-24", noma ngokwezifiso ngokwezidingo zakho;
Ubude:Ubude obungahleliwe noma ukusika ukuze u-oda;
Ukupakishwa:Ukugqoka okumnyama, iziphetho eziboshwe, izivikeli zokuphela kwamapayipi, amakhreyithi enziwe ngokhuni, njll.
Ukusekela:Isitifiketi se-IBR, ukuhlolwa kwe-TPI, i-MTC, ukusika, ukucubungula, nokwenza ngokwezifiso;
I-MOQ:1 m;
Imigomo Yokukhokha:T/T noma L/C;
Inani:Xhumana nathi ukuze uthole amanani wakamuva wepayipi lensimbi le-T91.
