Chithunzi cha ASTM A213 T91(ASME SA213 T91) ndi chitoliro chomwe chimagwiritsidwa ntchito kwambiri ndi ferritic alloy seamless steel chitoliro chomwe chili ndi 8.0% mpaka 9.5% Cr, 0.85% mpaka 1.05% Mo, ndi zinthu zina za microalloying.
Zowonjezera zowonjezera izi zimapereka machubu achitsulo a T91 omwe ali ndi mphamvu zotentha kwambiri, kukana kukwawa, komanso kukana kwa okosijeni, kuwapangitsa kuti azigwiritsidwa ntchito kwambiri m'ma boilers, ma superheaters, ndi osinthanitsa kutentha omwe amagwira ntchito pansi pa kutentha kwambiri komanso kupanikizika kwambiri.
Nambala ya UNS: K90901.
T91 zitsulo mapaipi akhoza m'guluMtundu 1ndiMtundu 2, ndi kusiyana kwakukulu kukhala kusintha pang'ono kwa mankhwala.
Mtundu wa 2 uli ndi zofunikira kwambiri pazinthu zamakina; mwachitsanzo, zolembedwa za S zimachepetsedwa kuchokera pamlingo wa 0.010% mu Type 1 mpaka 0.005%, ndipo malire apamwamba ndi otsika azinthu zina amasinthidwanso.
Mtundu wa 2 umapangidwira makamaka kuti ukhale ndi malo otentha kwambiri kapena owononga kwambiri, omwe amapereka kulimba komanso kukana kugwa.
Kenako, tiyeni tiwone mwatsatanetsatane zofunikira za kapangidwe ka mankhwala a Type 1 ndi Type 2 pakuwunika kwazinthu.
| Kupanga,% | Chithunzi cha ASTM A213 T91 | Chithunzi cha ASTM A213 T91 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | 0.020 max | |
| S | 0.010 max | 0.005 kukula |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | 0.40 max | 0.20 max |
| 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 kukula |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | 0.02 max | 0.020 max |
| W | - | 0.05 max |
| Ti | 0.01 max | |
| Zr | 0.01 max | |
| Zinthu Zina | - | Kukula: 0.10 max Sb: 0.003 max Sn: 0.010 max Monga: 0.010 max N/Al: 4.0 min |
T91 Type 1 ndi 2 ali ndi kusiyana pang'ono pakupanga mankhwala, koma amagawana zofunikira zamakina ndi chithandizo cha kutentha.
Tensile Properties
| Gulu | Kulimba kwamakokedwe | Zokolola Mphamvu | Elongation mu 2 in. kapena 50 mm |
| T91 mtundu 1 ndi 2 | 85 ksi [585 MPa] min | 60 ksi [415 MPa] min | 20% mphindi |
Kuuma Properties
| Gulu | Brinell / Vickers | Rockwell |
| T91 mtundu 1 ndi 2 | 190 mpaka 250 HBW 196 mpaka 265 HV | 90 HRB mpaka 25 HRC |
Mayeso a Flattening
Njira yoyeserayo iyenera kutsatira zofunikira za Ndime 19 ya ASTM A1016.
Kuyesa kumodzi kosalala kumapangidwa pazitsanzo kuchokera kumapeto kwa chubu limodzi lomalizidwa, osati lomwe limagwiritsidwa ntchito poyesa moto, kuchokera pagawo lililonse.
Kuyesa kwa Flaring
Njira yoyeserayi iyenera kutsatira zofunikira za Ndime 22 ya ASTM A1016.
Kuyesa kumodzi kumayenera kupangidwa pazitsanzo kuchokera kumapeto kwa chubu limodzi lomwe lamalizidwa, osati lomwe limagwiritsidwa ntchito poyesa kusalala, kuchokera pagawo lililonse.
Wopanga ndi Mkhalidwe
Machubu a ASTM A213 T91 adzapangidwa ndi njira yopanda msoko ndipo azikhala otentha kapena oziziritsa, monga pakufunika.
Mipope yachitsulo yopanda msoko, ndi mawonekedwe awo osalekeza komanso opanda weld, amagawanitsa nkhawa mofananamo pansi pa kutentha kwakukulu, kuthamanga kwambiri, ndi zovuta zonyamula katundu, kupereka mphamvu zapamwamba, zolimba, ndi kutopa.
Kutentha Chithandizo
Mipope yonse yachitsulo ya T91 iyenera kutenthedwanso ndikutenthedwa ndi kutentha molingana ndi zofunikira zomwe zafotokozedwa patebulo.
Kutentha mankhwala idzachitika payokha ndi kuwonjezera Kutentha kwa otentha kupanga.
| Gulu | Kutentha azichitira mtundu | Austenitizing / Solution Chithandizo | Subcritical Annealing kapena Kutentha |
| T91 mtundu 1 ndi 2 | normalize ndi kupsa mtima | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Pazinthu za Gulu la T91 Type 2, chithandizo cha kutentha chiyenera kuonetsetsa kuti kutsata kuzizira kwa 1650 ° F mpaka 900 ° F [900 ° C mpaka 480 ° C] sikuchedwa kuposa 9 ° F / min [5 ° C/ min].
T91 chubu makulidwe ndi makulidwe khoma nthawi zambiri zoperekedwa ndi diameters mkati kuyambira 3.2 mm kwa diameters kunja 127 mm, ndi osachepera khoma makulidwe kuchokera 0.4 mm mpaka 12.7 mm.
Kukula kwina kwa mapaipi achitsulo a T91 atha kuperekedwanso, malinga ngati zofunikira zina zonse za ASTM A213 zikukwaniritsidwa.
Zololera zamtundu wa T91 ndizofanana ndi za T11. Kuti mumve zambiri, mutha kuloza kuT11 Makulidwe ndi Kulekerera.
| UNS | ASME | Chithunzi cha ASTM | EN | GB |
| K90901 | Chithunzi cha ASME SA213 T91 | Chithunzi cha ASTM A335 P91 | EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Zogulitsa:ASTM A213 T91 Mtundu 1 ndi Type 2 aloyi zitsulo mapaipi ndi zomangira;
Kukula:1/8" mpaka 24", kapena makonda malinga ndi zomwe mukufuna;
Utali:Kutalika kwachisawawa kapena kudula kuyitanitsa;
Kuyika:Kupaka kwakuda, malekezero opindika, oteteza chitoliro, mabokosi amatabwa, etc.
Thandizo:IBR certification, TPI anayendera, MTC, kudula, processing, ndi makonda;
MOQ:1 m;
Malipiro:T/T kapena L/C;
Mtengo:Lumikizanani nafe kuti mupeze mitengo yaposachedwa yachitsulo ya T91.
