Khoom nta
Zoo heev -kub oxidation kuj thiab corrosion kuj (core kom zoo dua)
Lub ntsiab kom zoo dua ntawm ASTM A335 P5 nyob rau hauv nws zoo heev - kub oxidation kuj thiab corrosion kuj. Thanks to the addition of 4-6% chromium (Cr), P5 can form a dense Cr₂O₃ oxide film at high temperatures, effectively resisting high-temperature oxidation and thermal corrosion. Nws lub siab txwv rau oxidation tsis kam mus txog 550-600 degree, ua tau zoo tshaj P1 (tsawg dua lossis sib npaug li 450 degree) thiab P11 (tsawg dua lossis sib npaug li 538 degree). Nyob rau hauv siab -kub sulfur- muaj ib puag ncig ntawm refineries, P5 nthuav tawm superior corrosion kuj piv rau qib qis -chromium, zoo tiv taus siab - kub sulfidation corrosion thiab ua ke oxidation-sulfidation corrosion. Nrog rau qhov tsawg kawg nkaus tensile lub zog ntawm 415 MPa thiab qhov tsawg kawg nkaus yield zog ntawm 205 MPa, nws yog nyob rau par nrog P1 thiab P11 nyob rau hauv cov nqe lus ntawm lub zog theem tab sis muaj ib tug tseem ceeb kom zoo dua nyob rau hauv high-kub oxidation kuj.
Zoo siab - qhov kub thiab txias tsis kam
ASTM A335 P5 tswj cov qib zoo ntawm qhov kub thiab txias. Ua tsaug rau qhov sib ntxiv ntawm 0.5% molybdenum (Mo) thiab cov ntsiab lus chromium ntau dua, P5 qhia tau zoo heev -kub creep rupture zog nyob rau hauv qhov kub ntawm 500-600℃. Nyob rau hauv tej yam kev mob ntawm 550 degree, P5 muaj zoo oxidation tsis kam thiab siab - kub zog piv rau P11, ua rau nws haum rau siab - kub thiab siab - siab piping systems ua hauj lwm nyob rau hauv cov qib siab kub. Nws qhov siab - qhov kub thiab txias ruaj khov yog piv rau P11, tab sis nws muaj qhov siab tshaj qhov txwv rau oxidation tsis kam kub, tso cai rau lub sijhawm ntev - kev pabcuam nyob rau hauv qhov chaw kub kub hnyav dua.
Zoo machinability thiab formability
ASTM A335 P5 nthuav tawm cov khoom txias thiab kub ua haujlwm zoo, tso cai rau ntau yam txheej txheem xws li kub dabtsi yog khoov, txias dabtsi yog khoov, thiab forging. Nrog rau cov ntsiab lus me ntsis alloy, nws pom zoo heev formability thaum lub caij txias khoov, ua rau nws haum rau manufacturing yeeb nkab fittings xws li luj tshib, tees, thiab reducers. Nws yuav tsum tau muab sau tseg tias vim nws cov ntsiab lus chromium siab dua, P5 muaj ib qho kev nyiam me ntsis rau kev ua hauj lwm hardening piv rau P1 / P11. Yog li ntawd, nws raug pom zoo kom suav nrog qhov tsim nyog nruab nrab annealing cov kauj ruam thaum tsim cov txheej txheem. Nws cov machinability yog piv rau cov P11, thiab cov pa machining txoj kev tuaj yeem ua haujlwm rau kev ua haujlwm.
Kev ua tau zoo vuam zoo thiab tom qab- vuam cov cua sov yuav tsum tau ua
ASTM A335 P5 pom zoo weldability. Txawm li cas los xij, vim nws cov ntsiab lus chromium siab dua (4-6%), nws muaj kev nyiam me ntsis rau kev ua kom tawv nqaij hauv tshav kub- thaj tsam cuam tshuam piv rau P1/P11, yog li yuav tsum tau siv cov txheej txheem vuam nruj dua thiab tom qab-weld heat treatment (PWHT). Nws raug pom zoo tias qhov kub thiab txias ua ntej vuam yog 150-250 degree. Tom qab vuam, PWHT yuav tsum tau ua los ntawm cua sov mus rau 700-760 degree, tuav ntawm qhov kub thiab txias, thiab tom qab ntawd maj mam txias kom txo tau qhov seem ntawm cov welding stresses thiab soften lub tshav kub-cuam tshuam cheeb tsam, kom ntseeg tau lub toughness thiab tawg tsis kam ntawm welded sib koom.
Lub koom haum muaj kev ruaj ntseg zoo thiab ntev - kev cia siab rau kev pabcuam
ASTM A335 P5 pom zoo microstructural stability thaum lub sij hawm ntev - kev pab cuam ntawm qhov kub thiab txias tsawg dua los yog sib npaug rau 600℃. Nws cov ntsiab lus chromium siab dua txhim kho cov khoom siv oxidation kuj thiab siab -kub corrosion kuj. Cov qauv tsim ntawm 5% Cr-0.5%Mo ua kom muaj kev ruaj ntseg microstructural thaum lub sij hawm ntev - lub sij hawm siab - kub kev pab cuam. Tom qab normalizing thiab tempering (N + T) kev kho cua sov, P5 tau txais ib qho zoo thiab zoo ferrite + carbide microstructure, guaranteeing microstructural stability thiab kev ntseeg siab nyob rau hauv high-temperature kev pab cuam.
Technical Specifications
Tshuaj muaj pes tsawg leeg (ASTM A335 / ASME SA335)
|
Lub ntsiab |
Cov kev cai txheem |
Nco tseg |
|
C |
Tsawg dua lossis sib npaug li 0.15% |
Tsawg- carbon tsim kom ntseeg tau tias weldability thiab toughness |
|
Mn |
0.30 - 0.60% |
Kev daws teeb meem ntxiv dag zog, txhim kho lub zog |
|
P |
Tsawg dua lossis sib npaug li 0.025% |
Cov khoom tsis zoo, tswj nruj heev |
|
S |
Tsawg dua lossis sib npaug li 0.025% |
Cov khoom tsis zoo, tswj nruj heev |
|
Si |
Tsawg dua lossis sib npaug li 0.50% |
Deoxidizer, txhim kho siab -kub oxidation kuj |
|
Cr |
4.00 - 6.00% |
Cov ntsiab lus tseem ceeb uas muab cov antioxidant yooj yim thiab corrosion kuj |
|
Mo |
0.45 - 0.65% |
Cov ntsiab lus tseem ceeb los txhim kho siab -kub creep tawg lub zog |
|
Fe |
Cov khoom seem (≈ 93%) |
Matrix element |
Lub cev muaj zog
|
Kev ua tau zoo |
Tus lej Tus Nqi / Ntau |
Cov xwm txheej kuaj |
|
Qhov ntom |
≈ 7.75 g / cm³ |
Chav ntsuas kub (20 degree) |
|
Melting Point |
≈ 1390-1430 degree |
- |
|
Hluav taws xob tsis kam |
≈ 0.40 μΩ·m |
Chav ntsuas kub |
|
Thermal conductivity |
≈ 34 W/(m·K) |
Chav ntsuas kub |
|
Coefficient ntawm Thermal Expansion (20-100 degree) |
≈ 11.6 × 10⁻⁶ /K |
- |
|
Elastic Modulus (Young's Modulus) |
Qhov siab tshaj plaws ntawm qhov siab ntawm 200 GPa |
Chav ntsuas kub |
|
Poisson tus ratio |
≈ 0.28 |
Chav ntsuas kub |
|
Magnetism |
Ferromagnetic |
Ferrite qauv, uas yog hlau nplaum |
Mechanical Properties (Normalized + Tempered, Tus nqi zoo, ASTM A335)
|
Kev ua tau zoo |
Yam nqi |
Cov qauv kev coj ua |
|
Tensile zog |
Ntau dua lossis sib npaug li 415 MPa |
ASTM A335 Cov Lus Qhia Tshwj Xeeb |
|
Yield zog (0.2% Offset) |
Ntau dua lossis sib npaug li 205 MPa |
ASTM A335 Cov Lus Qhia Tshwj Xeeb |
|
Elongation (gauge ntev 2in / 50mm) |
Ntau dua lossis sib npaug li 30% |
ASTM A335 Cov Lus Qhia Tshwj Xeeb |
|
Hardness |
Tsawg dua lossis sib npaug rau 217 HB (tus nqi raug) |
- |
Lus Cim: Lub zog ntawm P5 yog tib yam li ntawm P1 / P11 (Ntau dua lossis sib npaug rau 415 MPa). Txawm li cas los xij, nws qhov txiaj ntsig tseem ceeb nyob hauv qhov zoo tshaj plaws - kub oxidation tsis kam thiab corrosion kuj coj los ntawm nws cov ntsiab lus chromium 4-6%, es tsis yog txhim kho lub zog. Rau lub zog siab dua lossis qib siab dua, nws raug nquahu kom siv P91.
High -kev ua haujlwm kub
ASTM A335 P5 tuav lub zog zoo ntawm qhov kub thiab txias thiab haum rau ntev - lub sij hawm siab - kub qhov kev pab cuam mus txog 600 degree:
|
Kub |
Tensile zog (MPa, kwv yees) |
Kev ua tau zoo tuav tus nqi |
|
Chav tsev kub (20 degree) |
Ntau dua lossis sib npaug rau 415 |
100% |
|
400 degree |
≈ 370 |
Ntau dua lossis sib npaug li 89% |
|
450 degree |
≈ 340 |
Ntau dua lossis sib npaug li 82% |
|
500 degree |
≈ 280 |
Ntau dua lossis sib npaug li 67% |
Ntev -Lub sij hawm Thermal Stability thiab Microstructural Stability
ASTM A335 P5 pom zoo microstructural stability thaum lub sij hawm ntev - kev pab cuam ntawm qhov kub thiab txias tsawg dua los yog sib npaug rau 600℃. Qhov sib ntxiv ntawm 4-6% Cr zoo txhim kho siab -kub oxidation kuj thiab thermal corrosion kuj. Txawm li cas los xij, microstructural stability txo qis thiab oxidation kuj raug txo thaum siv rau ntev -lub sij hawm kev pab cuam saum toj no 620℃. Nws tsis pom zoo rau kev pabcuam ntev tshaj 620 degree. Rau cov qib kub siab dua, nws raug nquahu kom xaiv P91 lossis P92.
Kev kho cua sov
Qhov kev ua tau zoo kawg ntawm ASTM A335 P5 yog nyob ntawm kev kho cua sov, nrog rau cov lus qhia tshwj xeeb raws li hauv qab no:
1. Kev Kho Mob (Normalizing)
Kub rau 925-955 degree, tuav lub sijhawm txaus (kwv yees li 1 teev ib nti ntawm phab ntsa tuab), ces cua txias. Qhov no ua rau muaj qhov sib xws, nplua-grained ferrite + carbide microstructure, npaj rau tom ntej tempering.
2. Tempering kho (Tempering)
Kub rau 700-760 degree, tuav lub sijhawm txaus, ces cua txias. Qhov no tshem tawm cov kev ntxhov siab vim los ntawm normalizing, optimizes toughness thiab plasticity, thiab ua tiav cov kev pabcuam zaum kawg.
3. Tag Nrho Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas
Tshav kub rau 840-870 degree, tuav ntawm qhov kub thiab txias, tom qab ntawd lub qhov cub txias kom txog li 650 degree, tom qab ntawd cua txias rau chav sov. Qhov no yog siv los tshem tawm cov kev ntxhov siab ua haujlwm txias lossis txhim kho kev ua haujlwm txias.
Nco ntsoov:
Post-weld heat treatment (PWHT) raug pom zoo tom qab vuam. Nws suav nrog cua sov rau700-760degree , tuav ntawm qhov kub thiab txias, thiab tom qab ntawd maj mam txias kom tshem tawm cov kev ntxhov siab ntawm cov welding residual thiab soften lub tshav kub- thaj tsam cuam tshuam.
Vim nws cov ntsiab lus chromium siab dua, P5 muaj qhov xav tau ntau dua los ua kom tawv nqaij hauv cov cua sov- cuam tshuam thaj tsam piv rau P1 / P11. Nws raug nquahu kom nruj tswj vuam cov khoom siv hluav taws xob thiab preheating kub.
Kev kho cua sov kub thiab lub sij hawm yuav tsum tau tswj nruj me ntsis kom tsis txhob muaj cov nplej coarsening lossis kev ua haujlwm hloov pauv.
Siv tau Media
Siab - qhov kub thiab txias:
Cov kav dej tseem ceeb ntawm cov nroj tsuag fais fab (tsawg dua lossis sib npaug li 600 degree), boiler superheater hlab, reheater hlab
Petroleum refining media:
High -kub sulfur- muaj cov txheej txheem kav dej rau atmospheric thiab nqus distillation, catalytic cracking, hydrotreating, ncua coking, thiab lwm yam.
High-kub sulfur- muaj cov xov xwm:
High -kub sulfur- muaj roj thiab roj media, acidic media ib puag ncig hauv refineries
High -kub txheej txheem gases:
Siab - kub thiab siab - cov kav xa dej ntawm cov chaw siv tshuaj ammonia synthesis, methanol ntau lawm, thiab lwm yam.
High -kub kub hloov khoom nruab nrab:
Thaum tshav kub kub hloov roj pipelines, siab -kub hloov hluav taws xob
Lus Cim: ASTM A335 P5 tsis muaj feem xyuam rau cov xov xwm corrosive xws li oxidizing acids (xws li, concentrated nitric acid) thiab siab - kub, siab -concentration chlorides. Nws lub siab oxidation kub txwv yog kwv yees li 600 degree; P91 lossis P92 raug pom zoo saum toj no qhov kub thiab txias. Nyob rau hauv siab -kub, siab -siab hydrogen{13}} muaj ib puag ncig (xws li, hydroprocessing units), hydrogen corrosion yuav tsum raug soj ntsuam. Feem ntau, P5 yog haum rau cov xwm txheej nrog qis hydrogen ib nrab siab lossis qis dua.
ASTM A335 P5 yog haum rau siab - kub (500-600 degree) kev pab cuam nyob rau hauv sulfur-muaj corrosive ib puag ncig. Nws yog ib qho ntawm cov khoom nyiam tshaj plaws rau cov txheej txheem kub kub hauv cov roj refining thiab petrochemical industries, pom zoo siv rau hauv cov hauv qab no:
Daim ntawv thov teb
-
Petroleum Refining (Core Application)
● High-cov kav dej kub txheej txheem rau catalytic cracking units
● High- kub thiab siab - cov kav dej siab rau hydrotreating/hydrocracking units
● High-kub pipelines ntawm atmospheric thiab nqus distillation chav tsev
● Ncua sijhawm Coking Unit Txheej Txheej Piping
● Refinery rhaub tubing, cua sov exchanger raj -
Petrochemical Engineering (Core Applications)
● High-cov kav dej kub hauv ethylene cracking units
● Aromatic chav tsev siab -kub txheej txheem kav
● Petrochemical cua sov rauv tube system -
Fossil fuel power generation
● Main Steam Piping rau Subcritical / Supercritical Fais Fab (tsawg dua lossis sib npaug li 600 degree)
● Superheater raj, reheater raj
● High -kub qhov cua qhov kav dej -
Siab - kub thiab siab - cov yeeb nkab fittings
● High-lub luj tshib, tees, thiab reducers
● Forged yeeb nkab fittings, flanges
Kev xa khoom thiab Customization
Peb muab cov kev daws teeb meem hloov tau yooj yim thiab txhim khu kev qha kom ntseeg tau tias koj tau txais ASTM A335 P5 alloy steel kav uas zoo kawg nkaus phim koj qhov kev xav tau.
Customizable cov ntaub ntawv
Peb txhawb tsim ntau yam yooj yim thiab tshwj xeeb cov duab raws li drawings los yog specifications.
|
Daim ntawv |
 Seamless Steel Yeeb Nkab
|
 Loj -inch Thick{1}}walled Yeeb Nkab
|
 Alloy Steel Yeeb Nkab
|
|---|---|---|---|
|
Pauv ntau yam |
Sab nraud txoj kab uas hla: 10.3 - 1067 hli; Phab ntsa Thickness: 1 - 150 hli |
Sab nraud txoj kab uas hla: 219 - 1067 hli; Phab ntsa Thickness: 20 - 150 hli |
Sab nraud txoj kab uas hla: 10.3 - 610 hli; Phab ntsa Thickness: 1 - 50 hli |
|
Customization Muaj peev xwm |
Kub- dov / txias- kos seamless raj, tsau -ntev txiav, bevel machining, yeeb nkab kawg threads, tshwj xeeb kub kho tej yam kev mob (normalizing + tempering / annealing) |
Kub nthuav dav, ruaj -ntev txiav, bevel machining, tshwj xeeb kub kho tej yam kev mob |
Txias- kos cov raj precision, ruaj -ntev txiav, tshwj xeeb nto kho |
Vim li cas thiaj xaiv peb? - Txhim khu kev qha Engineering Technology. Dependable xa khoom.
Peb tsis yog ib tus neeg muag khoom xwb, tab sis yog ib tus neeg koom tes nrog cov ntaub ntawv ntseeg siab rau koj hauv Suav teb.
Vertically Integrated Production
Muaj 20,000㎡ qhov chaw nrog 10+ automated kab (8, 000+ tons / xyoo). Hauv - tsev cuab yeej & qhov chaw tuag ua rau muaj kev hloov kho sai thiab tswj tus nqi zoo - tsis muaj tus neeg nruab nrab kos npe.
Kev Tswjhwm nruj nruj ntawm txhua theem
Tag nrho traceability nyob rau hauv lub tseem ceeb QC checkpoints thoob plaws hauv ntau lawm . 100% raws li ASTM/ASME, EN, thiab GB qauv. Cov ntaub ntawv xeem cov ntaub ntawv muaj nyob nrog txhua qhov khoom xa tuaj.
Txhim khu kev xa khoom & Export ntim
10+ xyoo xa tawm mus rau Tebchaws Europe, North America, Southeast Asia & Middle East nrog cov dej tsis zoo thiab tiv thaiv- xeb, ua ke nrog cov kev xaiv thauj khoom yooj yim kom muaj kev nyab xeeb thiab nyob rau - lub sijhawm tuaj txog.
Qauv validation ua ntej pawg ntau lawm
Peb muab cov qauv dawb rau kev kuaj xyuas zoo, tso cai rau koj tso cov xaj xaj tsuas yog tom qab kev pom zoo. Peb xyuas kom meej qhov sib xws los ntawm cov qauv mus rau cov khoom loj los ntawm qhov ntsuas qhov tseeb thiab kev tsim pob tshab.
FAQ
Q: Dab tsi yog qhov zoo ntawm ASTM A335 P5?
Q: Qhov txawv ntawm ASTM A335 P5 thiab P11 yog dab tsi? Yuav ua li cas xaiv ntawm lawv?
Q: Qhov txawv ntawm ASTM A335 P5 thiab P1 yog dab tsi? Yuav ua li cas xaiv ntawm lawv?
Q: Qhov kev pabcuam siab tshaj plaws rau ASTM A335 P5 yog dab tsi?
Q: Qhov kev ua tau zoo ntawm ASTM A335 P5 yog dab tsi?
Q: Dab tsi yog qhov corrosion kuj ntawm ASTM A335 P5?
Cim npe nrov: Tuam Tshoj astm a335 p5 manufacturers, lwm tus neeg, Hoobkas
