ASTM A213 T91(ASME SA213 T91) yog cov yeeb nkab ferritic alloy seamless steel uas feem ntau siv uas muaj 8.0% txog 9.5% Cr, 0.85% txog 1.05% Mo, thiab lwm yam khoom me me.
Cov kev ntxiv alloying no muab cov kav hlau T91 nrog lub zog kub zoo heev, tiv taus creep, thiab tiv taus oxidation, ua rau lawv siv dav hauv boilers, superheaters, thiab cov cua sov sib pauv ua haujlwm hauv qab qhov kub thiab txias thiab siab.
UNS tus lej: K90901.
Cov kav hlau T91 tuaj yeem faib ua pawgHom 1thiabHom 2, nrog rau qhov sib txawv tseem ceeb yog kev hloov kho me ntsis hauv cov tshuaj lom neeg.
Hom 2 muaj cov kev cai nruj dua rau cov tshuaj lom neeg; piv txwv li, cov ntsiab lus S raug txo los ntawm qhov siab tshaj plaws ntawm 0.010% hauv Hom 1 mus rau qhov siab tshaj plaws ntawm 0.005%, thiab cov kev txwv sab saud thiab qis dua ntawm lwm cov ntsiab lus kuj raug kho.
Hom 2 feem ntau yog tsim los rau qhov kub thiab txias lossis qhov chaw xeb, muab kev tawv zoo dua thiab tiv taus kev nkag.
Tom ntej no, cia peb los saib ze dua txog cov kev xav tau ntawm cov tshuaj lom neeg rau Hom 1 thiab Hom 2 hauv kev tshuaj xyuas cov khoom.
| Cov khoom xyaw,% | ASTM A213 T91 Hom 1 | ASTM A213 T91 Hom 2 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | 0.020 siab tshaj plaws | |
| S | 0.010 siab tshaj plaws | 0.005 siab tshaj |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | 0.40 siab tshaj | 0.20 siab tshaj |
| 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 siab tshaj |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | 0.02 siab tshaj | 0.020 siab tshaj plaws |
| W | — | 0.05 siab tshaj |
| Ti | 0.01 siab tshaj | |
| Zr | 0.01 siab tshaj | |
| Lwm Cov Ntsiab Lus | — | Cu: 0.10 siab tshaj Sb: 0.003 siab tshaj Sn: 0.010 siab tshaj Raws li: 0.010 siab tshaj plaws Tsis muaj/Tsis muaj: 4.0 feeb |
T91 Hom 1 thiab 2 muaj qhov sib txawv me ntsis hauv cov tshuaj lom neeg, tab sis lawv muaj cov kev cai zoo ib yam rau cov khoom siv kho tshuab thiab kev kho cua sov.
Cov Khoom Tensile
| Qib | Lub zog tensile | Lub Zog Tawm | Kev ntev hauv 2 nti los yog 50 hli |
| T91 Hom 1 thiab 2 | 85 ksi [585 MPa] feeb | 60 ksi [415 MPa] feeb | 20% feeb |
Cov Khoom Siv Hardness
| Qib | Brinell / Vickers | Rockwell |
| T91 Hom 1 thiab 2 | 190 txog 250 HBW 196 txog 265 HV | 90 HRB txog 25 HRC |
Kev Ntsuas Kom Sib Nqus
Txoj kev sim yuav tsum ua raws li cov kev cai ntawm Clause 19 ntawm ASTM A1016.
Yuav tsum ua ib qho kev sim ua kom tiaj tiaj rau ntawm cov qauv los ntawm txhua qhov kawg ntawm ib lub raj tiav lawm, tsis yog qhov siv rau kev sim flaring, los ntawm txhua pawg.
Kev Ntsuas Kub
Txoj kev sim yuav tsum ua raws li cov kev cai ntawm Clause 22 ntawm ASTM A1016.
Yuav tsum ua ib qho kev sim flaring rau cov qauv los ntawm txhua qhov kawg ntawm ib lub raj tiav lawm, tsis yog qhov siv rau kev sim flattening, los ntawm txhua pawg.
Chaw Tsim Khoom thiab Mob
ASTM A213 T91 cov kav dej yuav tsum ua los ntawm cov txheej txheem seamless thiab yuav tsum yog kub-tiav lossis txias-tiav, raws li qhov xav tau.
Cov kav hlau tsis muaj qhov txuas, nrog lawv cov qauv txuas ntxiv thiab tsis muaj vuam, faib kev ntxhov siab ntau dua nyob rau hauv qhov kub siab, siab siab, thiab cov xwm txheej nyuaj, muab lub zog zoo dua, kev tawv, thiab kev qaug zog tiv taus.
Kev Kho Mob Kub
Txhua lub kav hlau T91 yuav tsum tau rov ua kom sov thiab kho cua sov raws li qhov yuav tsum tau ua hauv lub rooj.
Kev kho cua sov yuav tsum tau ua nyias thiab ntxiv rau kev cua sov rau kev tsim kub.
| Qib | Hom kev kho cua sov | Kev Kho Mob Austenitizing / Kev Kho Mob Tshuaj | Kev Kub Ntxhov los yog Kub Kub |
| T91 Hom 1 thiab 2 | normalizes thiab txo qhov mob | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Rau Qib T91 Hom 2 cov khoom siv, kev kho cua sov yuav tsum xyuas kom meej tias tom qab austenitizing tus nqi ntawm kev txias ntawm 1650 ° F txog 900 ° F [900 ° C txog 480 ° C] tsis qeeb dua 9 ° F / feeb [5 ° C / feeb].
T91 cov yeeb nkab qhov loj thiab phab ntsa tuab feem ntau yog muab nrog sab hauv txoj kab uas hla txij li 3.2 hli mus rau sab nraud txoj kab uas hla ntawm 127 hli, thiab qhov tsawg kawg nkaus phab ntsa tuab ntawm 0.4 hli mus rau 12.7 hli.
Lwm qhov loj ntawm T91 steel yeeb nkab kuj tseem tuaj yeem muab tau, yog tias txhua yam kev cai ntawm ASTM A213 tau ua tiav.
Qhov kev kam rau siab ntawm T91 zoo ib yam li cov ntawm T11. Yog xav paub ntxiv, koj tuaj yeem xa mus rauT11 Qhov Loj thiab Kev kam rau siab.
| UNS | ASME | ASTM | EN | GB |
| K90901 | ASME SA213 T91 | ASTM A335 P91 | EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Khoom:ASTM A213 T91 Hom 1 thiab Hom 2 seamless alloy steel yeeb nkab thiab fittings;
Loj:1/8 "txog 24", lossis kho raws li koj xav tau;
Ntev:Qhov ntev random lossis txiav kom txiav txim;
Ntim:Cov txheej txheem dub, cov qhov kawg beveled, cov yeeb nkab kawg tiv thaiv, cov ntoo crates, thiab lwm yam.
Kev Txhawb Nqa:Daim ntawv pov thawj IBR, kev tshuaj xyuas TPI, MTC, kev txiav, kev ua tiav, thiab kev kho kom haum;
MOQ:1 m;
Cov nqe lus them nqi:T/T los yog L/C;
Nqe:Tiv tauj peb kom paub txog cov nqi yeeb nkab hlau T91 tshiab kawg.
