ASTM A213 T91(ASME SA213 T91) he mea maʻamau i hoʻohana ʻia i ka paipu kila maʻamau ferritic alloy seamless me 8.0% a 9.5% Cr, 0.85% a 1.05% Mo, a me nā mea microalloying ʻē aʻe.
Hāʻawi kēia mau mea hoʻohui hoʻohui i nā paipu kila T91 me ka ikaika kiʻekiʻe kiʻekiʻe, ke kuʻekuʻe ʻana, a me ka pale ʻana i ka oxidation, e hoʻohana nui ʻia i nā boilers, superheaters, a me nā mea hoʻololi wela e hana ana ma lalo o nā kūlana kiʻekiʻe a me nā kūlana kiʻekiʻe.
Helu UNS: K90901.
Hiki ke hoʻokaʻawale ʻia nā paipu kila T91ʻAno 1aʻAno 2, me ka ʻokoʻa nui ʻo nā hoʻololi liʻiliʻi i ka haku melemele.
Loaʻa i ka ʻano 2 nā koi koʻikoʻi no nā mea kemika; no ka laʻana, hoʻemi ʻia ka maʻiʻo S mai kahi kiʻekiʻe o 0.010% ma Type 1 i kahi kiʻekiʻe o 0.005%, a ua hoʻoponopono ʻia nā palena o luna a me lalo o nā mea ʻē aʻe.
Manaʻo ʻia ʻo Type 2 no ka ʻoi aku ka koi o ka wela kiʻekiʻe a i ʻole ka corrosive environment, e hāʻawi ana i ka paʻakikī a me ke kūpaʻa ʻana.
A laila, e nānā pono kākou i nā koi o ka haku mele no ke ʻano 1 a me ke ʻano 2 i ka nānā ʻana i nā huahana.
| Huina, % | ASTM A213 T91 ʻAno 1 | ASTM A213 T91 ʻAno 2 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | 0.020 ka nui | |
| S | 0.010 ka nui | 0.005 ka nui |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | 0.40 ka nui | 0.20 ka nui |
| 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 ka nui |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | 0.02 ka nui | 0.020 ka nui |
| W | — | 0.05 ka nui |
| Ti | 0.01 ka nui | |
| Zr | 0.01 ka nui | |
| Nā mea ʻē aʻe | — | Cu: 0.10 ka nui Sb: 0.003 ka nui Sn: 0.010 ka nui E like me: 0.010 ka nui N/Al: 4.0 min |
He ʻokoʻa liʻiliʻi ko T91 Type 1 a me 2 i ka haku mele ʻana, akā like lākou i nā koi like no nā waiwai mechanical a me ka mālama wela.
Na Waiwai Tensile
| Papa | Ikaika U'i | Ka ikaika hua | ʻO ka lōʻihi i 2 in. a i ʻole 50 mm |
| T91 ʻAno 1 a me 2 | 85 ksi [585 MPa] min | 60 ksi [415 MPa] min | 20 % min |
Na waiwai paakiki
| Papa | Brinell / Vickers | Rockwell |
| T91 ʻAno 1 a me 2 | 190 a 250 HBW 196 a 265 HV | 90 HRB a 25 HRC |
Ho'āʻo palahalaha
E hoʻokō ke ʻano hoʻāʻo me nā koi kūpono o ka Paukū 19 o ASTM A1016.
E hana ʻia hoʻokahi hoʻāʻo palahalaha ma luna o nā mea hoʻohālike mai kēlā me kēia kihi o hoʻokahi paipu i hoʻopau ʻia, ʻaʻole ka mea i hoʻohana ʻia no ka hoʻāʻo ʻana, mai kēlā me kēia ʻāpana.
Hoʻāʻo ʻana i ke ahi
E hoʻokō ke ala hoʻāʻo me nā koi kūpono o ka Paukū 22 o ASTM A1016.
E hana ʻia hoʻokahi hoʻāʻo ʻana ma luna o nā mea hoʻohālike mai kēlā me kēia kihi o hoʻokahi paipu i hoʻopau ʻia, ʻaʻole ka mea i hoʻohana ʻia no ka hoʻāʻo palahalaha, mai kēlā me kēia ʻāpana.
Mea Hana a me ke Kūlana
E hana ʻia nā paipu ASTM A213 T91 ma ke kaʻina hana ʻole a hoʻopau wela a hoʻopau anu paha, e like me ke koi.
ʻO nā paipu kila ʻole, me kā lākou hoʻomau a me ka weld-free, e puʻunaue like i ke koʻikoʻi ma lalo o ka wela kiʻekiʻe, ke kaomi kiʻekiʻe, a me nā kūlana hoʻouka paʻakikī, e hāʻawi ana i ka ikaika kiʻekiʻe, ka paʻakikī, a me ke kūpaʻa luhi.
Hoʻomaʻamaʻa Wela
ʻO nā paipu kila T91 a pau e hoʻomaʻamaʻa ʻia a hoʻomaʻamaʻa ʻia e like me nā koi i kuhikuhi ʻia ma ka papa.
Hoʻokaʻawale ʻia ka mālama ʻana i ka wela a me ka hoʻomehana ʻana no ka hana wela.
| Papa | ʻAno mālama wela | Austenitizing / Solution Lapaʻau | Subcritical Annealing a i ʻole Mahana |
| T91 ʻAno 1 a me 2 | maʻamau a huhū | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
No ka papa T91 Type 2 mea, pono e hoʻomaʻamaʻa ka wela ma hope o ka austenitizing ka wikiwiki o ka hoʻoluʻu ʻana mai 1650 °F a 900 °F [900 °C a i 480 °C] ʻaʻole ʻoi aku ka lohi ma mua o 9 °F/min [5 °C/ min].
ʻO ka nui o nā paipu T91 a me nā mānoanoa o ka paia e hoʻolako mau ʻia me nā anawaena o loko mai ka 3.2 mm a i nā anawaena o waho o 127 mm, a me nā mānoanoa pā liʻiliʻi mai 0.4 mm a i 12.7 mm.
Hiki ke hoʻolako ʻia nā ʻano nui ʻē aʻe o nā paipu kila T91, inā e hoʻokō ʻia nā koi ʻē aʻe a pau o ASTM A213.
Ua like ka hoʻomanawanui ʻana o T91 me ko T11. No nā kikoʻī, hiki iā ʻoe ke kuhikuhi i kaT11 ana a me ka hoomanawanui.
| UNS | ASME | ASTM | EN | GB |
| K90901 | ASME SA213 T91 | ASTM A335 P91 | EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Huahana:ʻO ASTM A213 T91 Type 1 a me Type 2 nā paipu kila hoʻoheheʻe ʻole a me nā mea pono;
Nui:1/8 "a 24", a i ʻole e like me kāu mau koi;
Ka lōʻihi:Ka lōʻihi a ʻokiʻoki paha i ke kauoha;
Packaging:ʻO ka uhi ʻeleʻele, nā wēlau beveled, nā pale pale hopena, nā pahu lāʻau, etc.
Kākoʻo:IBR palapala hōʻoia, TPI inspection, MTC, oki, hana, a me ka hana maʻamau;
MOQ:1 m;
Kūkākūkā uku:T / T a iʻole L / C;
Kumukuai:E kelepona mai iā mākou no nā kumukūʻai paipu kila T91 hou loa.
