ASTM A213 T91(ASME SA213 T91) ni umuyoboro w'icyuma ukoreshwa cyane ugizwe na ferritic alloy device steel device fraîche 8.0% kugeza 9.5% Cr, 0.85% kugeza 1.05% Mo, n'ibindi bintu bito bivangavanze.
Izi nyongeramusaruro zitanga imiyoboro y'icyuma ya T91 ifite imbaraga nziza cyane mu bushyuhe bwinshi, irwanya gucika kw'amazi, kandi irwanya ogisijeni, bigatuma ikoreshwa cyane mu byuma bishyushya, ibishyushya binini, n'ibihindura ubushyuhe bikorera mu bihe by'ubushyuhe bwinshi n'umuvuduko mwinshi.
Nimero ya UNS: K90901.
Imiyoboro y'icyuma ya T91 ishobora gushyirwa mu byiciroUbwoko bwa 1naUbwoko bwa 2, itandukaniro rikomeye rikaba ari uguhindura gato imiterere y'ibinyabutabire.
Ubwoko bwa 2 bufite ibisabwa bikomeye ku bintu bya shimi; urugero, ingano ya S igabanuka kuva kuri 0.010% mu bwoko bwa 1 ikagera kuri 0.005%, kandi imipaka yo hejuru n'iyo hasi y'ibindi bintu nayo irahindurwa.
Ubwoko bwa 2 bugenewe ahanini ahantu hashyuha cyane cyangwa hangiza, bugatanga ubukana bwiza no kudacika intege.
Hanyuma, reka turebere hamwe ibisabwa mu misemburo y’ubwoko bwa 1 n’ubwoko bwa 2 mu isesengura ry’ibicuruzwa.
| Imiterere, % | ASTM A213 T91 Ubwoko bwa 1 | ASTM A213 T91 Ubwoko bwa 2 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | Ibipimo ntarengwa bya 0.020 | |
| S | 0.010 ntarengwa | 0.005 ntarengwa |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | Ibipimo ntarengwa bya 0.40 | Ibipimo ntarengwa bya 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 ntarengwa |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | 0.02 ntarengwa | Ibipimo ntarengwa bya 0.020 |
| W | — | 0.05 ntarengwa |
| Ti | 0.01 ntarengwa | |
| Zr | 0.01 ntarengwa | |
| Ibindi Bice | — | Cu: 0.10 ntarengwa Sb: 0.003 ntarengwa Sn: 0.010 ntarengwa Uko: 0.010 ntarengwa Ntabyo: iminota 4.0 |
Ubwoko bwa T91 na 2 bifite itandukaniro rito mu miterere ya shimi, ariko bisangiye ibisabwa bimwe ku miterere ya mashini no kuvura ubushyuhe.
Imiterere yo Gufata
| Icyiciro | Imbaraga zo Gufata | Imbaraga z'umusaruro | Kurekura muri mm 2 cyangwa 50 |
| Ubwoko bwa T91 na 2 | 85 ksi [585 MPa] umunota | iminota 60 ksi [415 MPa] | Iminota 20% |
Imiterere y'Ubukomere
| Icyiciro | Brinell / Vickers | Rockwell |
| Ubwoko bwa T91 na 2 | 190 kugeza 250 HBW Ubushyuhe bwa 196 kugeza kuri 265 HV | HRB 90 kugeza kuri 25 HRC |
Ikizamini cyo Kugorora
Uburyo bwo gupima bugomba kubahiriza ibisabwa n'ingingo ya 19 ya ASTM A1016.
Ikizamini kimwe cyo gupima gikwiye gukorwa ku bipimo biri ku mpera ya buri muyoboro umwe warangiye, atari icyakoreshejwe mu ikizamini cyo gupima, kuri buri gice.
Ikizamini cyo Gutwika
Uburyo bwo gupima bugomba kubahiriza ibisabwa n'ingingo ya 22 ya ASTM A1016.
Ikizamini kimwe cyo gutwika kigomba gukorwa ku bipimo bivuye ku mpera ya buri muyoboro umwe warangiye, atari uwo gukoreshwa mu ikizamini cyo gutwika, uhereye kuri buri gice.
Uruganda n'imiterere yarwo
Imiyoboro ya ASTM A213 T91 igomba gukorwa hakoreshejwe uburyo budafite umugozi kandi igomba kuba irangijwe mu buryo bushyushye cyangwa bukonje, uko bikenewe.
Imiyoboro y'icyuma idafite umushono, hamwe n’imiterere yazo ihoraho kandi idafite ubushuhe, zikwirakwiza umuvuduko mu buryo bungana mu gihe cy’ubushyuhe bwinshi, umuvuduko mwinshi, n’imimerere igoye yo gupakira, bitanga imbaraga nyinshi, gukomera, no kudacika intege.
Uburyo bwo kuvura ubushyuhe
Imiyoboro yose y'icyuma ya T91 igomba kongera gushyuha no gutunganywa hakurikijwe ibisabwa byavuzwe mu mbonerahamwe.
Gutunganya ubushyuhe bigomba gukorwa ukwabyo, hiyongereyeho no gushyushya kugira ngo bibe bishyushye.
| Icyiciro | Ubwoko bw'ubushyuhe | Uburyo bwo kuvura / Gukemura ikibazo | Kugabanya cyangwa Ubushyuhe mu buryo buciriritse |
| Ubwoko bwa T91 na 2 | kuvugurura no gukabya | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Ku bikoresho byo mu bwoko bwa T91 Type 2, ubushyuhe bugomba gutuma nyuma yo gukonjesha igipimo cy'ubukonje kuva kuri 1650 °F kugeza kuri 900 °F [900 °C kugeza kuri 480 °C] kitarenze 9 °F/min [5 °C/min].
Ingano z'imiyoboro ya T91 n'ubugari bw'inkuta akenshi biba bifite umurambararo w'imbere uri hagati ya mm 3.2 na mm 127, naho umurambararo w'inkuta uri hagati ya mm 0.4 na mm 12.7.
Izindi ngano z'imiyoboro y'icyuma ya T91 nazo zishobora gutangwa, mu gihe ibindi bisabwa byose bya ASTM A213 byujuje.
Ubushobozi bwo kwihanganira T91 ni bumwe n'ubwo T11 ifite. Kugira ngo umenye byinshi, ushobora kurebaIbipimo bya T11 n'uburyo bwo kwihanganira.
| UNS | ASME | ASTM | EN | GB |
| K90901 | ASME SA213 T91 | ASTM A335 P91 | EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Igicuruzwa:Imiyoboro n'ibikoresho by'icyuma bya ASTM A213 T91 Ubwoko bwa 1 n'ubwoko bwa 2 bidafite umugozi;
Ingano:1/8" kugeza kuri 24", cyangwa byahinduwe hakurikijwe ibyo ukeneye;
Uburebure:Uburebure butunguranye cyangwa gukata hakurikijwe amabwiriza;
Gupfunyika:Igitambaro cy'umukara, impera zikozwe mu migozi, ibikingira impera z'imiyoboro, amasanduku y'ibiti, n'ibindi.
Inkunga:Icyemezo cya IBR, igenzura rya TPI, MTC, gukata, gutunganya, no guhindura ibintu;
MOQ:metero 1;
Amategeko yo kwishyura:T/T cyangwa L/C;
Igiciro:Twandikire kugira ngo ubone ibiciro biheruka by'imiyoboro y'icyuma ya T91.
