ASTM A213 T22 Hlau: Tshuaj muaj pes tsawg leeg, cov cuab yeej cuab tam, Kev kho cua sov & kev siv
Jan 07, 2026
1. T22 Steel yog dab tsi?
T22yog ib qho qis -alloy chromium-molybdenum steel npog los ntawm ASTM A213/A213M - cov lus qhia tshwj xeeb rau seamless ferritic alloy- steel boiler, superheater, thiab cua sov- cov raj sib txuas. Tus khub piping tus qauv ASTM A335 / A335M npog tib qib raws liP22rau seamless yeeb nkab.
Nws cov nominal muaj pes tsawg leeg yog 2.25% chromium thiab 1% molybdenum, uas yog vim li cas nws feem ntau hu ua2.25Cr-1Mo hlau. Lub npe UNS yogK21590.
T22 feem ntau yog xaiv thaum cov hlau tsis tuaj yeem tiv taus qhov kub thiab txias siab tshaj 450-500 degree, tab sis qhov kev hloov kho kom zoo rau 9Cr alloy steels lossis austenitic stainless hlau yog qhov tsis tsim nyog. Nws tau dav siv nyob rau hauv fais fab nroj tsuag boiler tubing, refineries, thiab petrochemical cov cuab yeej uas kub thiab siab ua ke.
2. Tshuaj muaj pes tsawg leeg (ASTM A213 T22)
|
Element |
Ntau yam / txwv (%) |
Lub luag haujlwm |
|
Cov pa roj carbon (C) |
0.05 – 0.15 |
Sib npaug weldability thiab siab - qhov kub thiab txias; Cov pa roj carbon ntau dhau ua rau carbide spheroidization. |
|
Chromium (Cr) |
1.90 – 2.60 |
Tsim cov yeeb yaj kiab oxide tiv thaiv; resists chav oxidation thiab sulfur nres. |
|
Molybdenum (hli) |
0.87 – 1.13 |
Cov khoom tseem ceeb -kev daws teeb meem ntxiv - muab T22 nws txoj kev tawm tsam thiab ua kom cov qauv ruaj khov rau kev ua haujlwm ntev. |
|
Manganese (Mn) |
0.30 – 0.60 |
Deoxidizer; tswj hardenability thiab kub workability. |
|
Silicon (Si), max |
0.50 |
Deoxidizer. |
|
Phosphorus (P), max |
0.025 |
Impurity - kom nws qis. |
|
Sulfur (S), max |
0.025 |
Impurity - kom nws qis. |
3. Mechanical Properties
|
Khoom |
Yam tsawg kawg nkaus |
|
Tensile zog Rm |
415 MPa (60 ksi) |
|
Yield zog Re (0.2% offset) |
205 MPa (30 ksi) |
|
Elongation A (ntev) |
30% |
|
Hardness (max) |
163 HB / 85 HRB |
Cov nqi no sawv cev rau qhov tsawg kawg nkaus uas yuav tsum tau teev tseg los ntawm ASTM A213. Hauv kev tsim khoom tiag tiag, T22 cov raj feem ntau ua tiav lub zog tensile nyob ib puag ncig 470-580 MPa, muab cov qauv tsim ntxiv rau cov ntawv thov tsim raws li ASME B31.1 lossis EN 12952-2.
4. Siab -Tsub Ua Haujlwm
4.1 Creep Resistance
Qhov kwv yees li 1% molybdenum cov ntsiab lus muab T22 nrog nws lub zog zoo heev. Ntawm cov hlau kub ntawm 500-580 degree, T22 qhia tau tias muaj kev nkag siab zoo dua li cov pa roj carbon steel thiab tswj kev ruaj ntseg microstructural thaum lub sijhawm ua haujlwm ntev -.
Raws li ASME B31.1 tso cai rau kev ntxhov siab, T22 yog qhov tsim nyog rau kev tsim cov ntawv thov siab txog li kwv yees593℃(1100℃F). Rau qhov kub siab dua, cov ntaub ntawv xws li T91, T92, lossis austenitic stainless hlau feem ntau nyiam.
4.2 Oxidation Resistance
Cov ntsiab lus chromium tsim cov nplai oxide ruaj khov, muab qhov tsim nyog tiv thaiv rau chav oxidation thiab sulfur nres hauv qab li ntawm 600-650 degree. Rau kev ua haujlwm tas mus li saum 600 degree, siab dua chromium alloys lossis cov txheej tiv thaiv yuav tsum tau.
4.3 Temper Embrittlement
Zoo li lwm yam 2.25Cr–1Mo steels, T22 yuav muaj kev kub ntxhov tom qab ntev - lub sij hawm raug nyob rau hauv qhov kub ntawm 350-575 degrees, tshwj xeeb tshaj yog thaum impurity ntsiab xws li phosphorus thiab tin yog siab.
Rau tuab- cov khoom siv phab ntsa uas xav tau kev pab cuam ntev dua, qis- cov hlau tsis huv steel cua sov nrog cov ntsiab lus P thiab Sn tswj tau raug pom zoo.
5. Kev kho cua sov thiab Weldability
Kev kho cua sov txheem:Tag nrho cov normalizing feem ntau ua ntawm kwv yees li 900-960 degree, ua raws li tempering ntawm ib ncig ntawm 680-750 degree. Txias- cov hlab ntsha tau zoo li qub thiab ua kom sov tom qab cov txheej txheem txo qis kawg. ASTM A213 kuj tso cai subcritical annealing raws li lwm txoj kev xa khoom.
Vuam:T22 muaj qhov zoo weldability thaum siv sib txuam 2.25Cr–1Mo vuam consumables, xws li ER90S-B3 (AWS A5.28) los yog E9018-B3 (AWS A5.5).
- Pom zoo preheat kub: 150-250℃rau seem saum toj no kwv yees li 13 hli thickness.
- Ncej -weld kev kho cua sov (PWHT): 677-730℃.
- PWHT yog qhov tseem ceeb los txo qis kev ntxhov siab thiab rov ua kom tawv nqaij.
Kev tsim:T22 txhawb nqa cov txheej txheem kub thiab txias. Txias- cov khoom tsim tau yuav tsum tau tshem tawm kev ntxhov siab thaum deformation dhau qhov kev txwv.
6. Qib sib npaug
|
Txuj |
Lub npe |
|
ASTM A213 / A335 / ASTM A213 / ASTM A213 / TS |
T22 / P22 (UNS K21590) |
|
GB / T 5310 (Tuam Tshoj) |
12Cr2MoG |
|
EN 10216-2 / DIN 17175 |
10CrMo9-10 (1.7380) |
|
JIS G 3462 / G 3458 |
SWB 22/STPA22 |
Tseem ceeb:15CrMoG lossis 13CrMo4-5 qee zaum ua tsis raug raws li T22 sib npaug. Cov qib no ze dua rau 1Cr–0.5Mo steels xws li ASTM A213 T11/T12 thiab tsis phim 2.25Cr–1Mo chemistry ntawm T22.
Qhov tseeb Suav sib npaug yog12Cr2MoG, thaum qhov tseeb European sib npaug10CrMo9-10 (1.7380). Nco ntsoov xyuas cov ntsiab lus chromium thiab molybdenum thaum hloov pauv ntawm cov qauv thoob ntiaj teb.
7. Cov ntawv thov ib txwm
- Fais fab nroj tsuag boilers:Superheaters, reheaters, cov kav dej loj, thiab cov taub hau ua haujlwm nyob rau hauv qhov kub thiab txias.
- Cov khoom siv tshuaj thiab petrochemical:Cracking furnace convection seem thiab khib nyiab cua sov rov qab systems.
- Petroleum refining:Hydrogenation thiab hydrotreating units qhov kub siab hydrogen kev pab cuam tshwm sim.
- Thaum tshav kub kub exchangers:High-kub plhaub-thiab- raj kub exchangers siv nyob rau hauv refinery thiab hluav taws xob systems.
A213 T22 Alloy steel yeeb nkab Hoobkas
8. FAQ
Qhov txawv ntawm T22 thiab T2 yog dab tsi?
T22 muaj kwv yees li 2.25% chromium thiab 1% molybdenum, thaum T2 muaj qis alloying qib. Cov ntsiab lus chromium ntau dua muab T22 zoo dua oxidation tsis kam thiab creep lub zog, ua rau nws zoo dua rau boiler superheater thiab cov ntawv siv lub ntsiab.
Qhov txawv ntawm T22 thiab T91 yog dab tsi?
T91 yog 9Cr-1Mo-V alloy nrog ntau dua creep zog thiab oxidation tsis kam tshaj T22. Feem ntau nws tuaj yeem tiv taus qhov kub thiab txias, nyob ib puag ncig 650 degree. T22 tseem siv dav vim nws muab qhov sib npaug zoo ntawm kev ua haujlwm thiab tus nqi.
T22 cov hlab puas tuaj yeem tuaj nrog lub tshav kub puv - daim ntawv pov thawj kho mob?
Yog lawm. T22 seamless raj yog ib txwm muab nkag rau hauv cov xwm txheej zoo li qub thiab ntsuas nrog cov ntawv pov thawj zeb kuaj raws li EN 10204 3.1, suav nrog kev tshuaj xyuas tshuaj, cov txiaj ntsig kev ntsuas tshuab, thiab cov nqi hardness.
Dab tsi phab ntsa thickness ntau yog muaj rau T22 boiler raj?
Feem ntau cov khoom siv muaj xws li sab nraud txoj kab uas hla ntawm 19 hli mus rau 114.3 hli, nrog phab ntsa tuab ntawm kwv yees li 2.0 hli mus rau hnyav- cov phab ntsa siab tshaj 12-20 hli nyob ntawm kev tsim khoom thiab kev thov.
Puas yog T22 haum rau kev pabcuam hydrogen?
Yog lawm. T22 yog siv dav hauv cov ntawv thov hydrogenation thaum ua haujlwm raws li Nelson nkhaus txwv. Kev xaiv cov khoom yuav tsum xav txog qhov kub thiab txias, hydrogen ib nrab siab, thiab H₂S cov ntsiab lus raws li API RP 941.
Cov ntaub ntawv
- ASTM A213 / A213M / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / A213M / ASTM A213 / ASTM A213 / A213M / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213 / ASTM A213) thiab ASTM A213- Txuj kev qhia tshwj xeeb rau Seamless Ferritic thiab Austenitic Alloy-Steel Boiler, Superheater, thiab Thaum tshav kub kub-Exchanger Tubes.
- ASTM A335/A335M- Txheem Specification rau Seamless Ferritic Alloy-Steel Yeeb Nkab rau Siab- Kev Pabcuam Kub.
- ASME B31.1- Fais fab Piping.
- GB/T 5310-2017- Seamless Steel Tubes thiab Yeeb Nkab rau Kev Kub Siab Boiler (12Cr2MoG).
- TS EN 10216-2- Seamless steel raj rau lub hom phiaj siab, qib 10CrMo9-10 (1.7380).
- API RP 941 Cov- Steels rau Hydrogen Kev Pabcuam ntawm Kev Kub Siab thiab Siab Siab hauv Petroleum Refineries thiab Petrochemical Plants.
