Taw qhia
AL-6XN steel phajyog super- austenitic stainless hlau.
Lub npe "AL-6XN" los ntawm nws cov yam ntxwv tseem ceeb: Al rau alloy, 6 rau 6% molybdenum, thiab XN rau ntxiv nitrogen. Lub npe npe rau cov hlau no yog UNS N08367, thiab nws tseem raug muag hauv cov npe xws li INCOLOY® 25-6HN thiab 6Mo. AL-6XN yog lub npe lag luam ntawm ATI Properties, LLC, tab sis ntau lub mills tsim cov khoom sib npaug raws li UNS N08367 tsim.
Tshuaj muaj pes tsawg leeg ntawm AL-6XN phaj
|
Lub ntsiab |
Qhov hnyav% |
Nws Ua Dab Tsi |
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Nickel (Ni) |
23.5 – 25.5 |
Muab kev tiv thaiv kev ntxhov siab corrosion tawg; stabilizes cov qauv austenitic |
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Chromium (Cr) |
20.0 – 22.0 |
Tsim cov txheej txheem oxide passive uas tiv thaiv kev xeb |
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Molybdenum (hli) |
6.0 – 7.0 |
Blocks pitting thiab crevice nres los ntawm chlorides |
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Nitrogen (N) |
0.18 – 0.25 |
Txhim kho cov alloy thiab ntxiv txhim kho pitting kuj |
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Cov pa roj carbon (C) |
Tsawg dua lossis sib npaug li 0.03 |
Tsawg carbon tiv thaiv carbide nag lossis daus thaum vuam |
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Manganese (Mn) |
Tsawg dua lossis sib npaug li 2.00 |
Pab hauv deoxidation thaum steelmaking |
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Silicon (Si) |
Tsawg dua lossis sib npaug li 1.00 |
Txhim kho oxidation tsis kam |
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Copper (Cu) |
Tsawg dua lossis sib npaug li 0.75 |
Txhim khu kev tiv thaiv rau qee cov acids |
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Hlau (Fe) |
Qhov nyiaj tshuav (kwv yees . 41–47%) |
Lub hauv paus hlau uas tuav txhua yam ua ke |
Cov ntaub ntawv qhov chaw: Wikipedia, Corrosionpedia, Fushun Tshwj Xeeb Steel, Lork Alloy
Qhov tseem ceeb tshaj plaws ntawm AL-6XN's chemistry yog kev sib xyaw ntawm molybdenum siab (6%) thiab nitrogen (0.2%). PREN yog suav nrog cov mis: PREN=%Cr + 3.3×%Mo + 16×%N. Rau AL-6XN, PREN yog kwv yees li 45, uas yog ze li ob npaug ntawm tus qauv 316L stainless hlau.
Mechanical Properties ntawm AL-6XN Phaj
AL-6XN tsis yog corrosion xwb-resistant-nws kuj muaj zog heev. Vim nws cov ntsiab lus nitrogen, nws muaj zog tensile ntau dua li cov austenitic stainless hlaus thaum tseem khaws cia zoo ductility thiab cuam tshuam toughness.
Mechanical Properties (Room Kub, Annealed Condition)
|
Khoom |
Tus nqi (Metric) |
Tus nqi (Imperial) |
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Tensile Strength (Qhov kawg) |
680-770 MPa |
98,600 - 111,600 psi |
|
Yield zog (0.2% offset) |
300-393 MPa |
43,500 - 57,000 psi |
|
Elongation ntawm Break |
35 – 50% |
35 – 50% |
|
Hardness |
Tsawg dua lossis sib npaug li 90 HRB |
Tsawg dua lossis sib npaug li 90 Rockwell B |
|
Modulus ntawm Elasticity |
~ 200 GPa |
~ 29,000 ksi |
Cov ntaub ntawv qhov chaw: Lork Alloy, SeaTher Technology, TJC Steel
Muaj zog npaum li cas AL-6XN piv rau 316L?
ASME tso cai rau kev ntxhov siab rau AL-6XN muaj txog li 75% siab dua rau 316L stainless hlau.
Lub nkoj siab uas xav tau 10 hli tuab 316L phaj tsuas yog xav tau 6 hli tuab AL-6XN phaj los tswj cov siab tib yam. Cov khoom siv tus nqi ib kilogram yuav siab dua, tab sis tag nrho qhov hnyav thiab ntim ntawm cov khoom siv tuaj yeem qis dua.
Lwm txoj hauv kev kom nkag siab AL-6XN lub zog kom zoo dua: AL-6XN yog kwv yees li 50% muaj zog dua li cov qauv stainless hlau thaum tseem khaws cov ductility siab thiab cuam tshuam lub zog.
Lub cev muaj zog ntawm AL-6XN phaj
Physical properties describe how the material behaves without external forces-things like density, melting point, and how it responds to heat and electricity.
|
Khoom |
Tus nqi |
Sau ntawv |
|
Qhov ntom |
8.03 g / cm³ (0.290 lb / hauv³) |
hnyav dua 316L (~ 8.0 g / cm³) |
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Melting Range |
1370 - 1400 ° (2500 - 2550 ° F) |
Ib txwm rau super- qib austenitic |
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Thermal conductivity |
~ 15 W / m·K (ntawm chav tsev kub) |
Tsawg dua carbon steel, zoo ib yam li 316L |
|
Hluav taws xob Resistivity |
~0.78 µΩ·m |
Tsis yog -magnetic nyob rau hauv annealed mob |
|
Tshwj xeeb kub muaj peev xwm |
~ 500 J/kg · K |
Tshav kub yuav tsum tau nce kub |
Qhov ntsuas kub siab tshaj plaws: AL-6XN tuaj yeem siv txuas ntxiv mus txog li 800℃F (427 degree) raws li ASME cov cai. Qhov no yog qhov siab dua li ntau lwm cov qib super- austenitic, ua AL-6XN haum rau cov ntawv thov kub xws li cov khoom siv hluav taws xob sib hloov thiab cov txheej txheem cov khoom siv ua dej kub.
Cov khoom sib nqus: AL-6XN yog cov hlau tsis sib nqus hauv cov txheej txheem annealed, zoo ib yam li 304 thiab 316 stainless hlau. Qhov no ua rau nws tsim nyog rau cov ntawv thov uas yuav tsum tau zam kev cuam tshuam sib nqus, xws li cov khoom siv hluav taws xob nkag siab lossis cov cuab yeej kho mob.
Corrosion Resistance ntawm AL-6XN phaj
Qhov no yog qhov twg AL-6XN tiag tiag ci. Lub alloy yog Ameslikas tsim los rau seawater daim ntaub ntawv, thiab nws muaj ntau tshaj 25 xyoo ntawm kev pab cuam pov thawj nyob rau hauv lub feem ntau corrosive ib puag ncig nyob rau hauv lub ntiaj teb no.
Dab tsi ua rau AL-6XN thiaj li Corrosion-Resistant?
Peb lub ntsiab ua haujlwm ua ke los tiv thaiv AL-6XN:
Chromium (20-22%) tsim ib txheej nyias, tsis pom oxide txheej ntawm qhov chaw uas tiv thaiv xeb thiab kev xeb. Cov txheej no yog tus kheej- kho- yog khawb, nws rov qab sai sai - cov ntaub ntawv muaj oxygen.
Molybdenum (6-7%) yog tus yuam sij rau kev sib ntaus sib tua chlorides. Nws tsim cov tshuaj tiv thaiv uas tiv thaiv chloride ions los ntawm kev nkag mus rau cov txheej txheem oxide tiv thaiv. Yog tsis muaj molybdenum, chlorides tuaj yeem tawg thiab pib pitting.
Nitrogen (0.18-0.25%) ntxiv dag zog rau cov txheej txheem tiv thaiv thiab ua rau cov khoom tiv taus ntau dua rau pitting thiab crevice corrosion.
Hom Corrosion AL-6XN Resists
Pitting corrosion tsim qhov me me uas tuaj yeem loj hlob thiab nws thiaj li nkag mus rau phab ntsa ntawm cov yeeb nkab lossis lub tank. AL-6XN's PREN ntawm kwv yees li 45 txhais tau tias nws tuaj yeem tiv taus cov tshuaj chloride ntau dua thiab kub dua li 316L ua ntej pitting pib. Piv txwv li, nyob rau hauv kev tshawb fawb ntawm kub acetic acid nrog chlorides, 316L pib pitting ntawm tsuas yog 3 ppm chlorides, thaum AL-6XN yuav tsum tau 9 ppm-peb zaug cov tshuaj chloride kam rau ua.
Crevice corrosion tshwm sim nyob rau hauv nruj qhov chaw uas cov kua yuav daig, xws li nyob rau hauv gaskets los yog ntawm bolted flanges. AL-6XN lub siab molybdenum thiab nitrogen cov ntsiab lus muab tshwj xeeb tiv thaiv rau crevice nres, txawm nyob rau hauv dej hiav txwv stagnation.
Stress corrosion cracking (SCC) tshwm sim thaum tensile kev nyuaj siab ua ke nrog ib puag ncig corrosive. Chlorides yog ib qho ua rau SCC hauv cov qauv stainless hlau. AL-6XN cov ntsiab lus siab npib tsib xee (24%) muab nws cov tswv yim tiv thaiv rau chloride kev nyuaj siab corrosion cracking, lub ntsiab lus nws tsuas yog tsis tawg nyob rau hauv sodium chloride ib puag ncig qhov twg 304 thiab 316 yuav poob.
Qhov zoo ntawm AL-6XN Phaj Khoom
Superior chloride kuj. AL-6XN tiv taus pitting, crevice corrosion, thiab kev nyuaj siab corrosion tawg nyob rau hauv seawater, brines, thiab lwm yam chloride-nplua nuj ib puag ncig qhov twg 316L yuav poob nyob rau hauv lub hlis.
Siab zog. Nrog ASME tso cai rau kev ntxhov siab txog li 75% siab dua 316L, AL-6XN tso cai rau cov engineers tsim cov khoom siv sib dua, nyias nyias yam tsis muaj kev nyab xeeb lossis ua haujlwm ntev.
Tus nqi - muaj txiaj ntsig zoo rau cov nickel alloys. Thaum AL-6XN raug nqi ntau dua 316L, nws tseem pheej yig dua li cov nickel alloys zoo li C-276 thaum muab piv rau corrosion kuj nyob rau hauv ntau qhov chaw.
Weldability zoo heev. AL-6XN tuaj yeem welded siv cov txheej txheem txheej txheem, txawm hais tias cov txheej txheem tsim nyog yuav tsum tau ua raws li kom muaj kev tiv thaiv corrosion.
Cov ntaub ntawv pov thawj. Nrog rau ntau tshaj 25 xyoo ntawm kev ua tau zoo nyob rau hauv dej hiav txwv thiab lwm yam kev nruj kev tsiv, AL-6XN yog ib tug ntseeg, pov thawj khoom.
Zoo formability. AL-6XN tuaj yeem khoov, dov, thiab tsim siv cov txheej txheem, txawm tias muaj zog ntau dua yuav tsum tau vim nws muaj zog ntxiv piv rau cov qauv austenitic stainless hlau.
Dav qhov kub thiab txias. AL-6XN ua tau zoo los ntawm qhov kub thiab txias txog 800℃F (427 degree), npog feem ntau cov txheej txheem kev lag luam.
Daim ntawv thov kev lag luam ntawm AL-6XN phaj
AL-6XN daim hlau yog siv nyob rau hauv kev lag luam uas corrosion kuj thiab lub zog yog ob qho tib si tseem ceeb. Hauv qab no yog cov kev siv ntau tshaj plaws.
Kev siv dej hiav txwv thiab Marine
AL-6XN yog thawj zaug tsim rau kev pabcuam dej hiav txwv. Nws yog dav siv nyob rau hauv:
Seawater heat exchangers thiab condenser
Piping systems ntawm offshore roj thiab roj platforms
Hluav taws kub systems ntawm nkoj thiab rigs
Desalination cog cov cuab yeej, twj tso kua mis, thiab kav dej tuav siab -chloride brine
Kev ua tshuaj lom neeg
Cov nroj tsuag tshuaj tua cov kua qaub uas rhuav tshem cov qauv stainless hlau. AL-6XN daim hlau yog siv rau:
Txheej txheem tank, nkoj, thiab pipelines
Thaum tshav kub kub exchangers tuav cov tshuaj corrosive
Distillation kab thiab siab roj distillation khoom
Cov cuab yeej tuav cov tshuaj chlorides, oxidizing acids, thiab sib xyaw acid ib puag ncig
Flue Gas Desulfurization (FGD) Systems
Cov chaw tsim hluav taws xob thiab cov chaw tsim khoom siv FGD cov tshuab kom tshem tawm cov sulfur dioxide los ntawm cov pa tawm. Cov tshuaj txhuam hniav slurries yog corrosive heev, muaj chlorides thiab acids ntawm qhov kub siab. AL-6XN daim hlau siv hauv:
FGD absorber yees thiab ducting
Reheaters thiab kev pabcuam kav dej
Txau nozzles thiab cov khoom siv sab hauv
Pulp thiab Ntawv Kev Lag Luam
Cov nroj tsuag tshuaj dawb siv cov tshuaj chlorine dioxide thiab lwm yam tshuaj lom neeg los ua kom tawv nqaij. AL-6XN daim hlau muaj nyob hauv:
Filter washers, vats, thiab nias yob
Cov khoom siv tshuaj dawb chlorine dioxide
Cov kav dej tuav cov tshuaj bleach cog cawv
Pharmaceutical thiab Biopharm Manufacturing
Kev lag luam biopharmaceutical xav tau cov ntaub ntawv uas tiv thaiv corrosion thiab tswj cov khoom purity. AL-6XN daim hlau yog siv rau:
Fermenters thiab bioreactor hlab ntsha
Pharmaceutical process tanks thiab piping
Cov cuab yeej ua kom tsis muaj menyuam
Kev ua zaub mov
Txawm tias cov khoom noj khoom haus tuaj yeem ua rau corrosive xav tsis thoob. Piv txwv li, kua txiv lws suav yuav corrode 316L stainless hlau ntawm pasteurization kub ntawm 210℃F (100 degree). AL-6XN tiv thaiv qhov corrosion thaum tseem muab cov khoom siv zoo ntawm stainless hlau.
Lub zog tiam
Condenser tubing hauv nuclear thiab fossil fais fab nroj tsuag
Kev pabcuam dej kav dej tuav cov dej hiav txwv lossis dej khov
Feedwater heaters thiab heat exchangers
Txheem thiab Specifications rau AL-6XN phaj
AL-6XN (UNS N08367) tau them los ntawm ntau tus qauv thoob ntiaj teb. Thaum muas AL-6XN phaj, nco ntsoov thov daim ntawv pov thawj Mill Test (MTC) lees paub ua raws li cov lus qhia tshwj xeeb rau koj daim ntawv thov.
|
Txuj |
Kev piav qhia |
Daim ntawv thov |
|
ASTM B 688 Cov khoom lag luam |
Txheem specification rau chromium-nickel-molybdenum- hlau phaj, ntawv, thiab sawb |
Phaj, ntawv, coil |
|
ASTM B 691 Cov Lus Qhia Tshwj Xeeb |
Standard specification rau pas nrig, bar, thiab hlau |
Bar, hlau, hlau |
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ASTM B 675 Cov khoom siv |
Specification rau UNS N08367 welded yeeb nkab |
Welded yeeb nkab |
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ASTM B676 |
Specification rau UNS N08367 welded raj |
Welded raj |
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ASTM B 690 Cov Lus Qhia Tshwj Xeeb |
Specification rau UNS N08367 seamless yeeb nkab thiab raj |
Seamless yeeb nkab, raj |
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ASTM B462 |
Specification rau cov yeeb nkab flanges thiab fittings |
Flanges, fittings |
|
ASTM B 366 Cov khoom siv |
Specification rau wrought nickel alloy vuam fittings |
Vuam fittings |
|
ASTM B564, 1 |
Specification rau nickel alloy forgings |
Forgings |
|
ASME SA-240 |
ASME txais yuav ntawm ASTM A240 rau cov hlab ntsha siab |
Phaj, ntawv, strip |
Cov ntaub ntawv: ASTM specifications, Neonickel, HiteAlloy
Cov ntaub ntawv khoom lag luam muaj rau AL-6XN suav nrog cov ntawv, phaj, kauj, bar, seamless thiab welded yeeb nkab, raj, flanges, fittings, thiab forgings. Phaj tuab feem ntau yog li ntawm 0.5 hli mus rau 100 hli, nrog qhov dav txog 3000 hli thiab ntev txog 12000 hli.
Fabrication thiab Vuam ntawm AL-6XN phaj
Vuam:AL-6XN muaj qhov zoo weldability. Nws tuaj yeem siv cov txheej txheem txheem xws li TIG (GTAW), MIG (GMAW), thiab SMAW. Cov ntsiab lus nitrogen nyob rau hauv cov alloy pab stabilize lub weld cheeb tsam thiab tswj corrosion kuj.
Txawm li cas los xij, cov txheej txheem vuam tsim nyog raug pom zoo kom ua tiav cov txiaj ntsig zoo. Siv cov khoom siv hlau sib txuam (xws li ERNiCrMo-3 lossis ERNiCrMo-10) kom ua tau zoo tshaj plaws. Kev kho cua sov tom qab vuam feem ntau tsis tas yuav tsum tau siv rau ntau daim ntawv thov, tab sis kev ntxhov siab yuav pab tau rau cov ntu hnyav.
Kev tsim:AL-6XN tuaj yeem ua txias tsim los ntawm kev khoov, dov, lossis nias siv cov txheej txheem txheem. Txawm li cas los xij, vim tias cov hlau tsis muaj zog ntau dua li cov qauv stainless hlau, ntau zog yuav tsum tau deform nws. Khoov tshaj tus txiv neej ntse tuag yuav tsum zam, vim qhov no tuaj yeem ua rau tawg. Tom qab mob khaub thuas txias heev, kev ntxhov siab los yog tag nrho cov annealing ua raws li dej quenching yog pom zoo kom rov qab kho txhua yam thiab corrosion zog.
Machining:AL-6XN ua haujlwm-hardens sai dua li cov qauv austenitic stainless hlau. Txhawm rau kom tau txais txiaj ntsig zoo tshaj plaws, siv cov cuab yeej txiav ntse, kev teeb tsa nruj, thiab cov dej txias txaus. Tsawg txiav ceev thiab zoo rake ces kaum raug pom zoo. Nyob rau hauv cov xwm txheej annealed, machinability zoo ib yam li lwm cov high-molybdenum austenitic stainless hlau.
Kev kho cua sov:AL-6XN feem ntau yog muab nyob rau hauv qhov kev daws teeb meem-nplua nuj. Tus txheej txheem annealing kub yog kwv yees li 2050℃F (1120 degree), ua raws li los ntawm ceev ceev txias (dej quenching) los tiv thaiv nag lossis daus ntawm undesirable theem thiab tswj corrosion kuj.
Xaus
AL-6XN phaj khoom yog super-austenitic stainless hlau uas tau tsim tshwj xeeb los daws cov teeb meem ntawm chloride corrosion. Nrog kwv yees li 24% npib tsib xee, 20% chromium, thiab 6% molybdenum, ua ke nrog nitrogen ntxiv dag zog, nws muaj kev sib xyaw tshwj xeeb ntawm cov khoom:
Exceptional tiv thaiv pitting, crevice corrosion, thiab kev nyuaj siab corrosion cracking nyob rau hauv seawater thiab lwm yam chloride - nplua nuj ib puag ncig.
Lub zog siab nrog ASME tso cai rau kev ntxhov siab txog li 75% siab dua 316L.
Zoo fabricability nrog zoo weldability thiab formability.
Tus nqi -txoj kev zoo rau npib tsib xee kim- raws li cov alloys xws li C-276.
Dav kub ntau los ntawm cryogenic mus txog 800℃F (427 degree).
Txawm hais tias koj daim ntawv thov cuam tshuam nrog cov dej hiav txwv cua txias, cov txheej txheem tshuaj lom neeg cov hlab ntsha, cov khoom siv roj flue desulfurization, lossis cov tshuaj bioreactors, AL-6XN muab cov kev tiv thaiv corrosion thiab lub zog txhua yam uas xav tau rau kev pabcuam mus ntev.
Thaum qhia txog AL-6XN, nco ntsoov xyuas tias cov khoom ua tau raws li cov qauv tsim nyog ASTM lossis ASME (xws li ASTM B688 lossis ASME SA-240) thiab thov daim ntawv pov thawj tag nrho cov ntawv xeem rau kev taug qab.
Rau ibncauj lus kom ntxawslos yog tham txog seb AL-6XN puas yog rau koj qhov project, hu rau peb pab neeg muag khoom nrog koj cov kev cai tshwj xeeb.
