I-ASTM A213 T91(ASME SA213 T91) ngumbhobho wentsimbi engenamthungo osetyenziswa rhoqo we-ferritic alloy equlethe i-8.0% ukuya kwi-9.5% Cr, i-0.85% ukuya kwi-1.05% Mo, kunye nezinye izinto ze-microalloying.
Ezi zongezo ze-alloying zibonelela ngeetyhubhu zentsimbi ze-T91 ezinamandla aphezulu obushushu obuphezulu, ukumelana nokuqhekeka, kunye nokumelana ne-oxidation, nto leyo eyenza ukuba zisetyenziswe kakhulu kwiibhoyila, ii-superheater, kunye nee-heat exchangers ezisebenza phantsi kweemeko zobushushu obuphezulu kunye noxinzelelo oluphezulu.
Inombolo ye-UNS: K90901.
Imibhobho yentsimbi ye-T91 inokwahlulwahlulwa ibe ziiUhlobo 1kwayeUhlobo 2, umahluko ophambili luhlengahlengiso oluncinci kwindlela ekwakhiwe ngayo iikhemikhali.
Uhlobo lwesibini luneemfuno ezingqongqo zezinto zeekhemikhali; umzekelo, umxholo we-S uncitshisiwe ukusuka kwi-max ye-0.010% kuhlobo lwe-1 ukuya kwi-max ye-0.005%, kwaye imida ephezulu nesezantsi yezinye izinto nayo iyalungiswa.
Uhlobo lwesibini lujoliswe ikakhulu kwiindawo ezifuna ubushushu obuphezulu okanye ezirhabaxa, nto leyo enika ukuqina okuphuculweyo kunye nokumelana nokurhubuluza.
Okulandelayo, masijonge ngokusondeleyo iimfuno zokwakheka kweekhemikhali zohlobo loku-1 nohlobo lwesi-2 kuhlalutyo lwemveliso.
| Ulwakhiwo, % | Uhlobo 1 lwe-ASTM A213 T91 | Uhlobo 2 lwe-ASTM A213 T91 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | Ubuninzi be-0.020 | |
| S | Ubuninzi be-0.010 | Ubuninzi be-0.005 |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | Ubuninzi obuyi-0.40 | Ubuninzi obuyi-0.20 |
| 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 ubuninzi |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | Ubuninzi obuyi-0.02 | Ubuninzi be-0.020 |
| W | — | Ubuninzi be-0.05 |
| Ti | Ubuninzi obuyi-0.01 | |
| Zr | Ubuninzi obuyi-0.01 | |
| Ezinye Izinto | — | I-Cu: ubuninzi be-0.10 I-Sb: 0.003 ubuninzi Ubungakanani: 0.010 ubuninzi Njengoko: 0.010 ubuninzi Akukho: 4.0 min |
Uhlobo lwe-T91 1 kunye nolwesi-2 lunomahluko omncinci kwimilo yeekhemikhali, kodwa babelana ngeemfuno ezifanayo zeempawu zoomatshini kunye nonyango lobushushu.
Iipropati zokuThatha
| Ibanga | Tensile strength | Unikeze Amandla | Ukwandiswa kwiisentimitha ezi-2 okanye ezingama-50 mm |
| Uhlobo lwe-T91 1 kunye nolwesi-2 | 85 ksi [585 MPa] min | 60 ksi [415 MPa] min | 20% imizuzu |
Iipropati zoBulukhuni
| Ibanga | UBrinell / uVickers | uRockwell |
| Uhlobo lwe-T91 1 kunye nolwesi-2 | 190 ukuya kwi-250 HBW 196 ukuya kwi-265 HV | Ukusuka kwi-90 HRB ukuya kwi-25 HRC |
Uvavanyo lokuTyatya
Indlela yokuvavanya kufuneka ihambelane neemfuno ezifanelekileyo zeCandelo 19 le-ASTM A1016.
Uvavanyo olunye lokuthamba kufuneka lwenziwe kwiisampuli ezivela kwisiphelo ngasinye setyhubhu enye egqityiweyo, kungekhona leyo isetyenziselwa uvavanyo lokuthamba, ukusuka kwiqashiso ngalinye.
Uvavanyo lokuvutha
Indlela yokuvavanya kufuneka ihambelane neemfuno ezifanelekileyo zeCandelo 22 le-ASTM A1016.
Uvavanyo olunye lokutshaya kufuneka lwenziwe kwiisampuli ezivela kwisiphelo ngasinye setyhubhu enye egqityiweyo, kungekhona leyo isetyenziselwa uvavanyo lokutshaya, ukusuka kwilothi nganye.
Umenzi kunye neMeko
Iityhubhu ze-ASTM A213 T91 mazibe zenziwe ngenkqubo engenamthungo kwaye mazibe zigqitywe ngobushushu okanye ngokubandayo, njengoko kufuneka.
Imibhobho yentsimbi engenamthungo, ngesakhiwo sazo esiqhubekayo nesingenazo iintsimbi, zisasaza uxinzelelo ngokulinganayo phantsi kobushushu obuphezulu, uxinzelelo oluphezulu, kunye neemeko ezinzima zokulayisha, zibonelela ngamandla aphezulu, ukuqina, kunye nokumelana nokudinwa.
Unyango lobushushu
Zonke iipayipi zentsimbi ze-T91 mazifudunyezwe kwaye zilungiswe ngobushushu ngokuhambelana neemfuno ezichazwe kwitheyibhile.
Unyango lobushushu kufuneka lwenziwe ngokwahlukeneyo kwaye ukongeza ekufudumaleni ukuze kwenziwe ubushushu.
| Ibanga | Uhlobo lokunyanga ubushushu | Unyango lwe-Austenitizing / Solution | Ubushushu okanye i-Subcritical Annealing |
| Uhlobo lwe-T91 1 kunye nolwesi-2 | ukwenza izinto zibe zesiqhelo kunye nobushushu | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Kwizinto zeGrade T91 Type 2, unyango lobushushu luya kuqinisekisa ukuba emva kokuqiniswa kweqondo lokupholisa ukusuka kwi-1650 °F ukuya kwi-900 °F [900 °C ukuya kwi-480 °C] alikho ngaphantsi kwe-9 °F/min [5 °C/min].
Ubukhulu beetyhubhu ze-T91 kunye nobukhulu bodonga zihlala zixhotyiswe ngobubanzi bangaphakathi obuqala kwi-3.2 mm ukuya kububanzi bangaphandle obuyi-127 mm, kwaye ubukhulu bodonga obuncinci buqala kwi-0.4 mm ukuya kwi-12.7 mm.
Ezinye iisayizi zeepayipi zentsimbi ze-T91 nazo zinokubonelelwa, ukuba nje zonke ezinye iimfuno ze-ASTM A213 ziyafezekiswa.
Ukunyamezelana kwe-T91 okulinganayo kuyafana nokwe-T11. Ukuze ufumane iinkcukacha, ungabhekisa kwiUbukhulu kunye nokunyamezela kwe-T11.
| I-UNS | I-ASME | I-ASTM | EN | GB |
| K90901 | I-ASME SA213 T91 | I-ASTM A335 P91 | I-EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Imveliso:I-ASTM A213 T91 Uhlobo 1 kunye nohlobo 2 imibhobho yentsimbi engenamthungo kunye nezixhobo;
Ubungakanani:1/8" ukuya kuma-24", okanye wenze ngokwezifiso ngokweemfuno zakho;
Ubude:Ubude obungacwangciswanga okanye obunqunyiweyo ngokwe-odolo;
Ukupakisha:Umbala omnyama, iziphelo ezibengezelayo, izikhuseli zemibhobho, iikreyithi zomthi, njl.njl.
Inkxaso:Isatifikethi se-IBR, ukuhlolwa kwe-TPI, i-MTC, ukusika, ukucubungula, kunye nokwenza ngokwezifiso;
I-MOQ:1 m;
Immimiselo yokuhlawula:I-T/T okanye i-L/C;
Ixabiso:Nxibelelana nathi ukuze ufumane amaxabiso amva nje eepayipi zentsimbi ze-T91.
