I-ASTM A213 T91(ASME SA213 T91) ngumbhobho wensimbi ongenamthungo osetyenziswa ngokuqhelekileyo we-ferritic equkethe i-8.0% ukuya kwi-9.5% Cr, 0.85% ukuya kwi-1.05% ye-Mo, kunye nezinye izinto ze-microalloying.
Ezi zongezo ze-alloying zibonelela ngeetyhubhu zentsimbi ze-T91 ezinamandla abalaseleyo obushushu obuphezulu, ukuxhathisa ukukhasa, kunye nokumelana ne-oxidation, okwenza ukuba zisetyenziswe ngokubanzi kwiibhoyila, ii-superheaters, kunye nokutshintsha ubushushu obusebenza phantsi kobushushu obuphezulu kunye neemeko zoxinzelelo oluphezulu.
Inombolo ye-UNS: K90901.
Imibhobho yentsimbi ye-T91 inokwahlulwa ibeUhlobo loku-1kwayeUhlobo lwesi-2, Umahluko ophambili luhlengahlengiso oluncinci ekubunjweni kweekhemikhali.
Udidi lwe-2 luneemfuno ezingqongqo kwizinto zekhemikhali; umzekelo, umxholo we-S uyancitshiswa ukusuka kubuninzi be-0.010% kwi-Type 1 ukuya kwi-0.005% enkulu, kunye nemida ephezulu kunye nesezantsi yezinye izinto nazo zihlengahlengiswa.
Udidi lwesi-2 lujolise ikakhulu kubushushu obuphezulu obuphezulu okanye indawo ezonakalisayo, ebonelela ngokuqina okuphuculweyo kunye nokuxhathisa kokurhubuluza.
Okulandelayo, makhe sijonge ngakumbi kwiimfuno zokwakheka kweekhemikhali zohlobo loku-1 kunye noHlobo lwe-2 kuhlalutyo lwemveliso.
| Ukuqamba, % | I-ASTM A213 T91 Uhlobo loku-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 ubuninzi | |
| S | 0.010 ubuninzi | 0.005 ubuninzi |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | 0.40 ubuninzi | 0.20 ubuninzi |
| 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 max |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | 0.02 ubuninzi | 0.020 ubuninzi |
| W | - | 0.05 ubuninzi |
| Ti | 0.01 ubuninzi | |
| Zr | 0.01 ubuninzi | |
| Ezinye izinto | - | Kuba: 0.10 max Sb: 0.003 ubuninzi Sn: 0.010 max Njengoko: 0.010 max N/Al: 4.0 imiz |
I-T91 Uhlobo lwe-1 kunye ne-2 lunolwahlulo oluncinci ekubunjweni kweekhemikhali, kodwa babelana ngeemfuno ezifanayo kwiipropati zomatshini kunye nonyango lokushisa.
Iipropati ze-Tensile
| IBanga | Tensile strength | Unikeze Amandla | Elongation kwi-2 ngaphakathi okanye i-50 mm |
| T91 Uhlobo loku-1 kunye no-2 | 85 ksi [585 MPa] imiz | 60 ksi [415 MPa] min | 20% min |
Iimpawu zokuqina
| IBanga | Brinell / Vickers | Rockwell |
| T91 Uhlobo loku-1 kunye no-2 | 190 ukuba 250 HBW 196 ukuya ku-265 HV | I-90 HRB ukuya kwi-25 HRC |
Uvavanyo lokucaba
Indlela yokuvavanya iya kuhambelana neemfuno ezifanelekileyo zeGatya le-19 le-ASTM A1016.
Uvavanyo olunye lokucaba luya kwenziwa kwisampulu nganye ekupheleni komnye umbhobho ogqityiweyo, hayi lowo usetyenziselwa uvavanyo lokuvutha, kwiqashiso ngalinye.
Uvavanyo oluvuthayo
Indlela yokuvavanya iya kuhambelana neemfuno ezifanelekileyo zeGatya lama-22 le-ASTM A1016.
Uvavanyo olunye lokuvutha luya kwenziwa kwisampulu nganye ekupheleni komnye umbhobho ogqityiweyo, hayi lowo usetyenziselwa uvavanyo lokucaba, kwiqashiso ngalinye.
Umenzi kunye nemeko
Iityhubhu ze-ASTM A213 T91 ziya kwenziwa ngenkqubo engenamthungo kwaye ziyakugqitywa kushushu okanye kugqitywe ngokubanda, njengoko kufuneka.
Imibhobho yentsimbi engenamthungo, kunye nesakhiwo sabo esiqhubekayo kunye ne-weld-free, ukusabalalisa uxinzelelo ngakumbi ngokulinganayo phantsi kobushushu obuphezulu, uxinzelelo oluphezulu, kunye neemeko ezinzima zokulayisha, ukubonelela amandla aphezulu, ukuqina, kunye nokumelana nokukhathala.
Unyango lobushushu
Zonke iipayipi zetsimbi ze-T91 ziya kuhlaziywa kwaye ziphathwe ngokushushu ngokuhambelana neemfuno ezichazwe kwitheyibhile.
Ukunyangwa kobushushu kuya kwenziwa ngokwahlukileyo kwaye ngaphezu kokufudumeza ukubunjwa okushushu.
| IBanga | Uhlobo lokunyanga ubushushu | I-Austenitizing / Unyango lweSisombululo | I-Subcritical Annealing okanye iqondo lobushushu |
| T91 Uhlobo loku-1 kunye no-2 | lungelelanisa kwaye ube nomsindo | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Kwimathiriyeli yeBanga le-T91 loHlobo lwe-2, unyango lobushushu luya kuqinisekisa ukuba ukulandela ukuqinisa izinga lokupholisa ukusuka kwi-1650 °F ukuya kuma-900 °F [900 °C ukuya kuma-480 °C] akucothi kune-9 °F/min [5 °C/ min].
Ubukhulu betyhubhu ye-T91 kunye nobukhulu bodonga budla ngokubonelelwa ngeedayamitha zangaphakathi ukusuka kwi-3.2 mm ukuya kwidayamitha yangaphandle ye-127 mm, kunye nobukhulu bodonga obuncinane ukusuka kwi-0.4 mm ukuya kwi-12.7 mm.
Olunye ubungakanani beepayipi zensimbi ze-T91 nazo zingabonelelwa, ngaphandle kokuba zonke ezinye iimfuno ze-ASTM A213 zidibene.
Ukunyamezela kwe-dimensional ye-T91 kuyafana nokwe-T11. Ngeenkcukacha, ungabhekisa kwiT11 Imilinganiselo kunye nokunyamezelwa.
| UNS | ASME | I-ASTM | EN | GB |
| K90901 | I-ASME SA213 T91 | I-ASTM A335 P91 | EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Imveliso:I-ASTM A213 T91 Uhlobo lwe-1 kunye noHlobo lwe-2 imibhobho yensimbi engenamthungo kunye nezixhobo;
Ubungakanani:1/8 "ukuya kuma-24", okanye ilungiselelwe ngokweemfuno zakho;
Ubude:Ubude obungacwangciswanga okanye ukusika ukuze kulandelelwe;
Ukupakishwa:Ukugquma okumnyama, iziphelo ezigudileyo, izikhuseli zokuphela kombhobho, iikhreyithi zokhuni, njl.
Inkxaso:Ukuqinisekiswa kwe-IBR, ukuhlolwa kwe-TPI, i-MTC, ukusika, ukusetyenzwa, kunye nokwenza ngokwezifiso;
MOQ:1 m;
Immimiselo yokuhlawula:T/T okanye L/C;
Ixabiso:Qhagamshelana nathi ngamaxabiso emibhobho yentsimbi yamva nje ye-T91.
