Khoom nta
Qhov zoo tshaj plaws tiv thaiv corrosion tsis zoo (core kom zoo dua)
Lub ntsiab kom zoo dua ntawm N08904 nyob rau hauv nws zoo heev corrosion kuj nyob rau hauv txo acids. Ua tsaug rau qhov sib ntxiv ntawm tooj liab (Cu), cov hlau no muaj qhov tshwj xeeb ruaj khov nyob rau hauv tsis yog - oxidizing acids xws li dilute sulfuric acid, phosphoric acid, thiab acetic acid. Nyob rau hauv cov ntshiab sulfuric acid nrog ntau npaum li cas ntawm 0% mus rau 98%, nws muaj peev xwm tiv taus kub mus txog 40 degree, nrog txawm ntau dua kam rau ntawm qis concentrations. Cov cuab yeej no ua rau nws nyiam cov khoom siv tshuaj siv los tuav cov xov xwm corrosive heev, xws li reactors, tso tsheb hlau luam, thiab cov khoom siv hluav taws xob, muab kev tiv thaiv corrosion zoo tshaj rau cov pa austenitic stainless hlau.
Exceptional kuj rau localized corrosion
Ua tsaug rau kev sib koom ua ke ntawm cov chromium siab (19-}23%), siab molybdenum (4-5%), thiab siab nickel (23-28%), N08904 nthuav tawm zoo heev tiv thaiv pitting thiab crevice corrosion hauv chloride-muaj xov xwm. Nws Pitting Resistance Equivalent Number (PREN) feem ntau yog ntau dua lossis sib npaug rau 35, thiab nws qhov kub ntawm qhov tseem ceeb yog kwv yees li 30℃siab dua li ntawm 316L. Qhov no ua rau nws tuaj yeem tiv taus ib puag ncig nrog cov tshuaj chloride siab li 2000 ppm lossis siab dua, ua rau nws yog ib qho kev xaiv zoo tshaj plaws rau kev siv hnyav xws li dej hiav txwv cua txias tshuab, offshore platforms, thiab flue gas desulfurization (FGD) systems.
Kev nyuaj siab corrosion cracking zoo heev (SCC) tsis kam ua haujlwm
Feem ntau austenitic stainless hlau (xws li 304 thiab 316) muaj kev cuam tshuam rau kev ntxhov siab corrosion tawg hauv cov tshuaj chloride- nplua nuj ib puag ncig ntawm qhov kub siab tshaj 60℃. N08904, nrog cov ntsiab lus npib tsib xee ntau dua 24%, txhim kho cov khoom tiv thaiv kev ntxhov siab corrosion tawg hauv cov tshuaj chloride, cov ntsiab lus hydroxide, thiab hydrogen sulfide (H₂S)- thaj chaw nplua nuj. Nws ua raws li NACE MR0175 / ISO 15156 tus qauv thiab tsim nyog rau cov chaw tsim khoom roj thiab roj uas muaj hydrogen sulfide los tiv thaiv sulfide kev nyuaj siab corrosion tawg (SSCC).
Zoo machining thiab tsim cov khoom
N08904 nthuav tawm cov khoom kub thiab txias ua haujlwm zoo. Nws cov qauv austenitic imparts superior toughness rau hom khoom no, txawm nyob rau hauv qis kub. Cov hlau tuaj yeem raug forged, dov, thiab stamped, thiab tseem tuaj yeem tsim los ntawm kev ua haujlwm zoo xws li tig, milling, thiab drilling. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias nws muaj lub siab xav ua haujlwm - tawv. Nws raug nquahu kom siv cov cuab yeej txiav carbide nrog rau kev txiav qis qis thiab cov nqi noj nruab nrab.
Stable austenitic qauv thiab tsis kam mus rau rhiab heev
N08904 nthuav tawm tag nrho austenitic microstructure hauv cov tshuaj -annealed mob. Vim nws ultra- carbon qis (tsawg dua los yog sib npaug rau 0.020%) tsim, nws tsawg kawg nkaus precipitates chromium carbides raws lis ciam teb tom qab vuam los yog luv luv raug rau qhov kub thiab txias ntau yam (425-850 degree). Qhov no txhais tau tias nws khaws zoo heev tsis kam mus rau intergranular corrosion nyob rau hauv lub welded mob thiab feem ntau tsis yuav tsum tau tom qab vuam desensitization tshav kub kev kho mob, ho simplifying lub manufacturing txheej txheem.
Technical Specifications
Tshuaj muaj pes tsawg leeg (ASTM B673 / ASME SB-625)
|
Lub ntsiab |
Standard Requirements |
Sau ntawv |
|
Ni |
23.0 - 28.0% |
Stabilize tus qauv austenitic, txhim kho kev tiv thaiv kev ntxhov siab corrosion thiab corrosion hauv kev txo cov kua qaub |
|
Cr |
19.0 - 23.0% |
Form a dense passivation film to provide basic corrosion resistance and oxidation resistance |
|
Mo |
4.0 - 5.0% |
Txhim khu kev tiv thaiv pitting corrosion thiab crevice corrosion |
|
Cu |
1.0 - 2.0% |
Cov ntsiab lus tseem ceeb uas cuam tshuam zoo corrosion kuj hauv kev txo cov kua qaub xws li dilute sulfuric acid |
|
Fe |
Cov khoom seem |
Matrix element |
|
C |
Tsawg dua lossis sib npaug li 0.020% |
Ultra- cov ntsiab lus tsis tshua muaj carbon, tiv thaiv intergranular corrosion |
|
Mn |
Tsawg dua lossis sib npaug li 2.0% |
|
|
Si |
Tsawg dua lossis sib npaug li 1.0% |
|
|
P |
Tsawg dua lossis sib npaug li 0.045% |
Cov ntsiab lus impurity, tswj nruj heev |
|
S |
Tsawg dua lossis sib npaug li 0.035% |
Cov ntsiab lus impurity, tswj nruj heev |
|
N |
Tsawg dua lossis sib npaug li 0.10% |
Lub cev muaj zog
|
Khoom |
Tus nqi / Ntau |
Kev Xeem |
|
Qhov ntom |
8.0 g / cm³ |
Chav ntsuas kub (20 degree) |
|
Melting Point |
1360 - 1397 degree |
--- |
|
Kev tiv thaiv |
≈ 0.97 - 1.0 μΩ·m |
Chav ntsuas kub |
|
Thermal conductivity |
≈ 12 W/(m·K) |
Chav ntsuas kub |
|
Coefficient ntawm thermal expansion (20-100 degree) |
≈ 14.9 - 16.0 × 10⁻⁶ /K |
--- |
|
Elastic Modulus (Young's Modulus) |
Qhov siab tshaj plaws ntawm qhov siab tshaj plaws yog 195 GPa |
Chav ntsuas kub |
|
Magnetism |
Tsis yog- sib nqus (ua tiav austenitic hauv kev daws-annealed mob, nrog tsis tshua muaj permeability) |
Nws yog qhov tseem ceeb tsis yog- sib nqus nyob rau hauv ntau yam xwm txheej |
Mechanical Properties (Kev daws teeb meem-annealed mob, tus nqi raug)
|
Khoom |
Tus nqi |
Specification |
|
Tensile zog (Rm) |
Ntau dua lossis sib npaug li 490 MPa |
ASTM B 673 Cov khoom lag luam |
|
Lub zog (Rp0.2) |
Ntau dua lossis sib npaug li 220 MPa |
ASTM B 673 Cov khoom lag luam |
|
Elongation (A) |
Ntau dua lossis sib npaug li 35% |
ASTM B 673 Cov khoom lag luam |
|
Hardness |
Tsawg dua lossis sib npaug li 90 HRB |
--- |
High -kev ua haujlwm kub
Qhov siab tshaj plaws ua haujlwm kub ntawm N08904 yog kwv yees li 450 degree. Thaum qhov kub thiab txias, cov hlau tseem muaj cov khoom siv kho tshuab zoo thiab nkag mus. Txawm li cas los xij, nws yuav tsum raug sau tseg tias qhov ntev ntev ntawm qhov kub ntawm 550-900℃tuaj yeem ua rau nag lossis daus ntawm carbides lossis σ theem, uas tuaj yeem cuam tshuam cov tawv thiab corrosion kuj. Yog li ntawd, kev kho cua sov tsis tsim nyog lossis ua kom txias qeeb hauv qhov no yuav tsum zam.
Antioxidant kev ua haujlwm:
N08904 pom zoo oxidation kuj nyob rau hauv ib puag ncig atmospheric. Nws oxidation tus nqi yog tsawg heev nyob rau hauv huab cua mus txog 400 degree. Txawm li cas los xij, nws qhov kev tiv thaiv corrosion tsis zoo rau qhov siab -chromium, molybdenum- cov qib steel dawb hauv cov oxidizing acids (xws li concentrated nitric acid).
Organizational Stability:
N08904 tuaj yeem ua tiav cov qauv austenitic microstructure los ntawm kev kho kom zoo (cua sov ntawm 1050-1150℃tom qab dej txias ceev), ua kom nws zoo heev corrosion kuj.
Kev kho cua sov
Qhov kev ua tau zoo kawg ntawm N08904 yog nyob ntawm qhov tseeb kev kho cua sov, nrog cov lus qhia tshwj xeeb raws li hauv qab no:
1. Tshuaj annealing (rau kho kom zoo corrosion kuj):
Tshav kub rau 1050-1150 degree, tuav lub sijhawm txaus (nyob ntawm qhov ntu ntu tuab, piv txwv li, 35-40 feeb rau cov raj), thiab tom qab ntawd quench sai hauv dej. Lub hom phiaj yog kom yaj tag nrho cov carbides, tau txais ib qho qauv austenitic, thiab kho kom zoo dua corrosion kuj.
2. Kev ntxhov siab rau kev ntxhov siab (Tom qab ua haujlwm txias):
Txhawm rau tshem tawm kev ntxhov siab ua haujlwm txias, qis -kub annealing tuaj yeem ua tau ntawm 300-400℃. Kev kho cua sov lossis txias txias hauv qhov ntsuas kub ntawm 425-850℃yuav tsum raug zam kom tsis txhob muaj nag lossis daus ntawm carbides lossis σ-theem, uas yuav ua rau txo qis intergranular corrosion kuj thiab toughness.
Nco tseg:
Thaum tshav kub kub kev kho mob yuav tsum tau ua tom qab kawg mechanical machining.
Cov dej txias sai sai tom qab kev kho kev daws teeb meem yog qhov tseem ceeb kom ua tiav qhov kev pom zoo corrosion.
Tom qab- vuam kev kho cua sov feem ntau tsis tas yuav tsum tau tom qab vuam.
Kev sib piv Corrosion Resistance thiab kev xaiv xaiv
|
Kev ua tau zoo ntsuas |
N08904 (904L) |
Ordinary austenitic stainless hlau (316L) |
Kev piav qhia |
|
Pitting Resistance Equivalent Number (PREN) |
Ntau dua lossis sib npaug li 35 |
≈ 25 |
Tus nqi siab dua, qhov muaj zog tiv thaiv pitting corrosion |
|
Critical Pitting Kub (CPT) |
≈ 40 - 50 degree |
≈ 10 - 15 degree |
Qhov ntsuas kub tseem ceeb rau pitting corrosion hauv chloride ib puag ncig |
|
Corrosion kuj nyob rau hauv dilute sulfuric acid |
Zoo heev |
Qhov txawv |
Cov ntsiab lus tooj liab yog qhov tseem ceeb rau kev siv hauv cov cuab yeej tuav dilute sulfuric acid |
|
Kev ntxhov siab Corrosion Cracking (SCC) |
Zoo heev (siab Ni cov ntsiab lus) |
rhiab heev (Chloride ib puag ncig saum 60 degree) |
Cov ntsiab lus siab nickel ua kom muaj zog tiv thaiv kev ntxhov siab corrosion cracking |
|
Intergranular Corrosion rhiab heev |
Tsis rhiab heev (ultra-tsawg carbon) |
Sensitive (tej zaum yuav rhiab heev tom qab vuam) |
Tus qauv ultra- qis carbon tsis tshua muaj teeb meem tom qab vuam. |
|
Nqi |
Siab dua |
qis |
High alloy cov ntsiab lus ua rau kom nce tus nqi |
|
Cov lus qhia xaiv |
Feem ntau siv rau qhov chaw muaj zog corrosive: sulfuric acid / phosphoric acid kho, seawater systems, FGD (Flue Gas Desulfurization), thiab hnyav hnyav uas muaj chlorine / hydrogen sulfide |
Feem ntau siv nyob rau hauv ib puag ncig corrosive: huab cua, dej, tsis muaj zog acids, thiab khoom noj khoom haus |
N08904 yog qhov siab -tus nqi- kev xaiv zoo rau cov ntawv thov uas xav tau siab heev rau kev tiv thaiv corrosion. |
Siv tau Media
1. Sulfuric Acid: Exhibits zoo heev corrosion kuj nyob rau hauv dilute sulfuric acid, ua rau nws ib tug classic khoom xaiv rau qhov kev pab cuam.
2. Phosphoric Acid: Ua tau zoo heev nyob rau hauv ob qho tib si ntshiab phosphoric acid thiab impure ntub- txheej txheem phosphoric acid.
3. Organic Acids (piv txwv li, Acetic Acid, Formic Acid): Qhia tau zoo corrosion kuj.
4. Chloride-Ion Solutions: Muaj kev tiv thaiv zoo heev rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion tshwm sim los ntawm chloride ions (xws li dej hiav txwv, dej ntsev).
5. Hydrogen Sulfide (H₂S) Ib puag ncig: Ua raws li NACE cov qauv thiab tsim nyog rau cov roj acidic thiab roj av ib puag ncig.
N08904 (904L) tshwj xeeb yog tsim los rau cov cheeb tsam uas muaj corrosive heev thiab kev ua haujlwm hnyav, thiab raug pom zoo siv rau hauv cov nram qab no:
Daim ntawv thov teb
-
Chemical Engineering thiab Petrochemical Engineering
Reactors, tanks, heat exchangers, towers, pipelines, thiab flanges yog siv los tuav sulfuric acid, phosphoric acid, chlorinated media, thiab lwm yam khoom. Lawv cov kev tiv thaiv corrosion zoo heev yog qhov tseem ceeb los ua kom lub sijhawm ntev -kev nyab xeeb ntawm cov khoom siv. -
Marine Engineering thiab Seawater Desalination
Seawater cooling systems, twj tso kua mis thiab valve Cheebtsam, marine platform structural parts, thiab corrosion{0}}cov seem hauv desalination units. Nws cov molybdenum siab thiab nickel cov ntsiab lus muab kev ntseeg tau ntau dua li cov pa stainless hlau nyob rau hauv ib puag ncig marine. -
Environmental Protection thiab Flue Gas Desulfurization (FGD) Systems
Cov khoom tseem ceeb xws li scrubbers, flue ducts, thiab baffle qhov rooj. FGD system ib puag ncig yog corrosive heev, thiab N08904 yog ib qho ntawm cov khoom siv tseem ceeb hauv daim teb no. -
Roj thiab natural gas kev lag luam
Siv nyob rau hauv cov roj acidic thiab roj av ib puag ncig uas muaj H₂S, nws tiv taus sulfide kev nyuaj siab corrosion cracking thiab yog haum rau downhole yeeb nkab cov ntaub ntawv, nto chaw, thiab lwm yam. -
Pharmaceutical thiab Food Industries
Cov cuab yeej siv tshuaj, siab - cov thawv purity, thiab cov kav dej siv lawv cov kev tiv thaiv corrosion zoo heev thiab tsis yog- cov khoom sib nqus kom ntseeg tau cov khoom purity thiab kev nyab xeeb ntawm cov txheej txheem. -
Papermaking kev lag luam
Siv nyob rau hauv cov theem los tuav cov tshuaj corrosive hauv cov khoom siv xws li tshuaj bleachers thiab digesters.
Kev xa khoom thiab Customization
Peb muab cov khoom lag luam hloov pauv tau yooj yim thiab txhim khu kev qha los xyuas kom meej tias koj tau txais N08904 (904L) cov ntaub ntawv uas haum rau koj qhov kev xav tau.
|
Daim ntawv |
 Ntawv / phaj
|
 Bar / Qws
|
 Tube / Tube
|
 Sawb / Sheet Coil
|
 Hlau / Hlau Rod
|
|---|---|---|---|---|---|
|
Pauv ntau yam |
Thickness: 3-60 hli |
Txoj kab uas hla Φ10-300mm |
Sab nraud txoj kab uas hla Φ10-300mm |
Thickness: 0.5-3.0 hli |
Txoj kab uas hla Φ0.1-8mm |
|
Customization Muaj peev xwm |
Nruab nrab- daim hlau tuab, daim hlau nyias, ruaj -ntev txiav, tshwj xeeb nto kho (pickling, polishing) |
Forged tuav, kub-khoov tuav, polished tuav, tshwj xeeb- zoo li tus tuav, thiab sib txawv thaum tshav kub kub kho |
Seamless kav, welded kav, tsau -ntev txiav, U- zoo li tus kav |
Precision strip cov ntaub ntawv, stamping coil cov ntaub ntawv, tsis yog - qauv dav |
Precision drawing, vuam muab tub lim, 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 N08904 piv rau cov hlau tsis zoo tib yam (xws li 316L)?
Q: Txoj kev kho cua sov zoo rau N08904 yog dab tsi?
Q: Puas yog N08904 yooj yim rau tshuab?
Q: Dab tsi yog qhov siab tshaj plaws ua haujlwm kub rau N08904?
Q: Puas yog N08904 muaj cov khoom sib nqus?
Q: Dab tsi yog qhov txawv ntawm N08904 thiab PERMALLOY (1J79)?
Cim npe nrov: n08904, Tuam Tshoj n08904 manufacturers, lwm tus neeg, Hoobkas
