ASTM A213 T91(ASME SA213 T91) waa tuubo bir ah oo aan lahayn bir ferritic ah oo si caadi ah loo isticmaalo oo ka kooban 8.0% ilaa 9.5% Cr, 0.85% ilaa 1.05% Mo, iyo walxo kale oo microalloying ah.
Ku darista dahaarkan waxay siisaa tuubooyinka birta ah ee T91 awood heer sare ah, iska caabin gurguurta, iyo iska caabin oksaydh, taasoo ka dhigaysa kuwo si weyn loogu isticmaalo kuleyliyeyaasha, kuleyliyeyaasha sare, iyo beddelayaasha kulaylka ee ku shaqeeya xaaladaha heerkulka sare iyo cadaadiska sare.
Lambarka UNS: K90901.
Tuubooyinka birta ah ee T91 waxaa loo kala saari karaaNooca 1aadiyoNooca 2aad, iyadoo farqiga ugu weyn uu yahay hagaajin yar oo ku saabsan halabuurka kiimikada.
Nooca 2aad wuxuu leeyahay shuruudo adag oo ku saabsan curiyayaasha kiimikada; tusaale ahaan, waxa ku jira S waxaa laga dhimaa ugu badnaan 0.010% Nooca 1aad ilaa ugu badnaan 0.005%, xadka sare iyo kan hoose ee curiyayaasha kale sidoo kale waa la hagaajiyaa.
Nooca 2aad waxaa inta badan loogu talagalay jawi heerkul sare leh ama daxal leh oo aad u baahan, taasoo siinaysa adkeysi wanaagsan iyo iska caabin gurguurta.
Marka xigta, aan si dhow u eegno shuruudaha kiimikada ee Nooca 1aad iyo Nooca 2aad ee falanqaynta badeecada.
| Halabuurka, % | ASTM A213 T91 Nooca 1aad | ASTM A213 T91 Nooca 2 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | 0.020 ugu badnaan | |
| S | 0.010 ugu badnaan | 0.005 ugu badnaan |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | 0.40 ugu badnaan | 0.20 ugu badnaan |
| 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 ugu badnaan |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | 0.02 ugu badnaan | 0.020 ugu badnaan |
| W | — | 0.05 ugu badnaan |
| Ti | 0.01 ugu badnaan | |
| Zr | 0.01 ugu badnaan | |
| Walxaha kale | — | Cu: ugu badnaan 0.10 Sb: 0.003 ugu badnaan Sn: ugu badnaan 0.010 Sida: ugu badnaan 0.010 Aan la helin: 4.0 daqiiqo |
T91 Nooca 1aad iyo 2aad waxay leeyihiin farqi yar oo ku saabsan halabuurka kiimikada, laakiin waxay wadaagaan shuruudo isku mid ah oo ku saabsan sifooyinka farsamada iyo daaweynta kulaylka.
Sifooyinka Tijaabada
| Fasal | Xoogga Tijaabada | Xoogga Wax Soo Saarka | Kordhinta gudaha 2 inji ama 50 mm |
| T91 Nooca 1aad iyo 2aad | 85 ksi [585 MPa] daqiiqo | 60 ksi [415 MPa] daqiiqo | 20% daqiq |
Astaamaha Adkaanta
| Fasal | Brinell / Vickers | Rockwell |
| T91 Nooca 1aad iyo 2aad | 190 ilaa 250 HBW 196 ilaa 265 HV | 90 HRB ilaa 25 HRC |
Imtixaanka Fiditaanka
Habka tijaabada waa inuu u hoggaansamaa shuruudaha khuseeya ee Qodobka 19aad ee ASTM A1016.
Hal tijaabo oo siman ayaa lagu samayn doonaa muunadaha laga soo qaadayo dhinac kasta oo ka mid ah hal tuubo oo dhammaystiran, ee aan ahayn kan loo isticmaalay tijaabada ololaynta, ee laga soo qaaday qayb kasta.
Imtixaanka Iftiiminta
Habka tijaabada waa inuu u hoggaansamaa shuruudaha khuseeya ee Qodobka 22aad ee ASTM A1016.
Hal tijaabo oo fidsan ayaa laga sameyn doonaa muunadaha laga soo qaadayo dhinac kasta oo ka mid ah hal tuubo oo dhammaystiran, ee aan ahayn kan loo isticmaalay tijaabada fidsan, ee laga sameeyay qayb kasta.
Soo-saaraha iyo Xaaladda
Tuubooyinka ASTM A213 T91 waa in lagu sameeyaa habka aan kala go 'lahayn waana in lagu sameeyaa kuleyl ama qabow, sida loogu baahdo.
Tuubooyinka birta ah ee aan xuduud lahayn, oo leh qaab-dhismeedkooda joogtada ah oo aan lahayn alxanka, waxay si siman u qaybiyaan cadaadiska heerkulka sare, cadaadiska sare, iyo xaaladaha rarista ee adag, iyagoo siinaya xoog sare, adkeysi, iyo iska caabin daal.
Daaweynta Kulaylka
Dhammaan tuubooyinka birta ah ee T91 waa in dib loo kululeeyaa oo lagu daaweeyaa kulaylka iyadoo la raacayo shuruudaha ku xusan jadwalka.
Daaweynta kulaylka waa in si gaar ah loo sameeyaa iyo marka lagu daro kuleylinta si loo sameeyo kuleyl.
| Fasal | Nooca daaweynta kulaylka | Daawaynta Xasaasiyadda / Daaweynta Xalka | Qaboojinta ama Heerkulka Hoosaadka ah |
| T91 Nooca 1aad iyo 2aad | caadi u noqo oo dabeecad samee | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Nooca 2aad ee Darajada T91, daaweynta kulaylka waa inay hubisaa in ka dib marka la ansixiyo heerka qaboojinta laga bilaabo 1650 °F ilaa 900 °F [900 °C ilaa 480 °C] uusan ka gaabin 9 °F/daqiiqo [5 °C/daqiiqo].
Cabbirrada tuubooyinka T91 iyo dhumucda derbiga waxaa badanaa lagu qalabeeyaa dhexroor gudaha ah oo u dhexeeya 3.2 mm ilaa dhexroorka dibadda ee 127 mm, iyo dhumucda derbiga ugu yar laga bilaabo 0.4 mm ilaa 12.7 mm.
Cabbirrada kale ee tuubooyinka birta ah ee T91 ayaa sidoo kale la bixin karaa, iyadoo la raacayo dhammaan shuruudaha kale ee ASTM A213.
Dulqaadka cabbirka ee T91 waa la mid ah kan T11. Wixii faahfaahin ah, waxaad tixraaci kartaaCabbirrada iyo Dulqaadka T11.
| Qaramada Midoobay | ASME | ASTM | EN | GB |
| K90901 | ASME SA213 T91 | ASTM A335 P91 | EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Badeecada:Tuubooyinka iyo qalabka birta ah ee aan kala go 'lahayn ee ASTM A213 T91 Nooca 1aad iyo Nooca 2aad;
Cabbirka:1/8" ilaa 24", ama loo habeeyey iyadoo loo eegayo shuruudahaaga;
Dhererka:Dherer aan kala sooc lahayn ama la jaray si loo dalbado;
Baakadaha:Dahaadh madow, darafyo godan, ilaaliyayaal dhammaadka tuubooyinka, sanduuqyo alwaax ah, iwm.
Taageerada:Shahaadada IBR, kormeerka TPI, MTC, jarista, farsamaynta, iyo habaynta;
MOQ:1 m;
Shuruudaha Lacag-bixinta:T/T ama L/C;
Qiimaha:Nala soo xiriir si aad u hesho qiimaha ugu dambeeyay ee tuubooyinka birta ah ee T91.
