Hastelloy C276 vs Duplex 2205
Hastelloy C276 vs Duplex 2205
Hastelloy C276 (ib tug npib tsib xee{1}}raws li alloy) qhia tau zoo heev tiv thaiv tsis tshua muaj corrosive sib xyaw tshuaj ib puag ncig (oxidizing / txo, chloride, thiab acidic), thaum duplex stainless hlau 2205 ua ke siab zog nrog zoo tiv thaiv chloride pitting thiab kev ntxhov siab corrosion cracking, ua rau nws zoo tagnrho rau nruab nrab chloride / marine ib puag ncig. Qhov no yog vim C276 yog siab -nickel alloy haum rau hnyav- lub luag haujlwm ib puag ncig, thaum duplex stainless hlau 2205 yog ntau yam thiab muaj zog dua lwm txoj rau cov qauv stainless hlau.
Hastelloy C276 yog dab tsi?
C-276 alloy yog dav siv nyob rau hauv ntau yam kev xav tau ib puag ncig, xws li kev ua tshuaj lom neeg, kev tswj kev ua qias tuaj, cov ntaub so ntswg thiab cov ntawv tsim, kev kho dej hauv nroog thiab hauv nroog, thiab cov roj ntsha qaub rov qab.
Txheej txheem cej luam ntawm Hastelloy C276 thiab Duplex Stainless Hlau 2205
Hastelloy C276: xyuasIb tug npib tsib xee-raws li alloy uas nws qhov zoo tshaj plaws nyob rau hauv nws zoo heev corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv hnyav txo thiab oxidizing xov xwm. Nws tuaj yeem suav tias yog "qhov kawg riam phom" rau kev daws teeb meem corrosion heev, tab sis nws kim heev.
Duplex Stainless hlau 2205:Lub duplex stainless hlau uas nws cov txiaj ntsig zoo yog lub zog siab, zoo tiv thaiv chloride kev ntxhov siab corrosion tawg, thiab tus nqi zoo heev - ua tau zoo. Nws yog "siab-kev ua tau zoo hloov kho" rau cov qauv stainless hlau xws li 316L, haum rau cov ntawv thov uas xav tau lub zog siab dua thiab pitting corrosion kuj, tab sis nws qhov kev ua tau zoo nyob rau hauv huab cua corrosive ib puag ncig tsis zoo li C276.
Cov tshuaj muaj pes tsawg leeg ntawm Hastelloy C276 thiab duplex stainless hlau 2205
| Khoom (%) | Hastelloy C276 | TIAB SA 2205 | Lub luag haujlwm ntawm Element |
| Nickel (Ni) | Qhov nyiaj tshuav (~ 57%) | 4.5–6.5 | Txhim kho toughness thiab tiv thaiv kom tsis txhob acids thiab kev ntxhov siab corrosion |
| Chromium (Cr) | 14.5–16.5 | 21.0–23.0 | Txhim kho kev tiv thaiv oxidizing media |
| Molybdenum (hli) | 15.0–17.0 | 2.5–3.5 | Txhim kho pitting thiab crevice corrosion kuj |
| Nitrogen (N) | – | 0.08–0.20 | Ua kom lub zog thiab pitting tsis kam ntawm stainless hlau |
| Hlau (Fe) | 4.0–7.0 | Qhov nyiaj tshuav (~ 67%) | Lub hauv paus ntsiab lus |
| Tungsten (W) | 3.0–4.5 | – | Txhim kho molybdenum cov teebmeem thiab txhim kho corrosion kuj |
Lub siab nickel thiab molybdenum cov ntsiab lus nyob rau hauv C276 alloy yog vim li cas rau nws zoo heev corrosion kuj. Hauv qhov sib piv, cov ntsiab lus chromium siab, cov ntsiab lus molybdenum nruab nrab, thiab qhov sib ntxiv ntawm nitrogen hauv 2205 alloy yog lub hauv paus rau nws lub zog siab thiab zoo pitting corrosion kuj.
Mechanical zog ntawm C276 alloy thiab 2205 alloy
| Khoom | Hastelloy C-276 (Tswj chav Temp) | Duplex 2205 (Tswj chav tsev Temp) |
|---|---|---|
| Tensile Strength (Qhov kawg) | 690 MPa (100 ksi) min | 620 MPa (90 ksi) min |
| Yield zog (0.2% Offset) | 283 MPa (41 ksi) min | 450 MPa (65 ksi) min |
| Elongation (hauv 2 hauv / 50mm) | 40% min | 25% min |
| Hardness | Rb 100 max | Rb 95 - 105 |
| Modulus ntawm Elasticity (Cov Hluas) | 205 GPa (29.7 x 10⁶ psi) | 200 GPa (29 x 10⁶ psi) |
| Qhov ntom | 8.89 g / cm³ (0.321 lb / hauv³) | 7.80 g / cm³ (0.282 lb / hauv³) |
| Impact Energy (Charpy V-Notch) | Typically High (e.g., >100 J) | Typically High (e.g., >100 J) |
Mechanical Properties
Lub zog:
Kev ua tau zoo ntawm 2205 yog qhov zoo tshaj rau C276. Vim nws cov qauv duplex, lub zog tawm ntawm 2205 (Ntau dua lossis sib npaug rau 450 MPa) yuav luag ob npaug ntawm C276 (Ntau dua lossis sib npaug rau 315 MPa) thiab 316 stainless hlau (Ntau dua lossis sib npaug rau 205 MPa). Qhov no txhais tau hais tias cov phab ntsa nyias nyias tuaj yeem siv nyob rau hauv tib lub zog tsim, yog li txo cov khoom hnyav.
Toughness thiab Ductility:
C276 ua tau zoo tshaj 2205. Cov qauv ntshiab austenitic ntawm C276 muab nws zoo heev plasticity thiab toughness, tshwj xeeb tshaj yog nyob rau hauv qis -kub ib puag ncig. Txawm hais tias 2205 kuj muaj qhov toughness zoo, nws feem ntau tsis zoo li C276.
Corrosion Resistance
C276: Kev ua tau zoo heev. Nws muaj zog corrosion kuj rau ntau yam kev txo cov kua qaub (xws li sulfuric acid, hydrochloric acid, phosphoric acid), oxidizing ntsev (xws li Fe³⁺, Cu²⁺), chloride ions, cov kuab tshuaj, thiab cov roj chlorine ntub dej thiab hypochlorites. Nws pitting kuj sib npaug tus lej (PREN=%Cr + 3.3×%Mo + 16×%N) yog siab heev (kwv yees 78).
2205:Kev ua tau zoo. Nws qhov kev tiv thaiv corrosion yog qhov zoo tshaj rau 304/316L stainless hlau, tshwj xeeb tshaj yog nyob rau hauv cov tshuaj chloride - muaj ib puag ncig. Nws cov pitting kuj sib npaug tus lej (PREN ≈ 35) yog siab dua 316L (≈26), tab sis qis dua C276. Nws ua tau zoo nyob rau hauv nruab nrab concentrations sulfuric acid, nitric acid, thiab lwm yam xov xwm, tab sis hnyav corrosion tshwm sim nyob rau hauv kub concentrated sulfuric acid, hydrochloric acid, thiab lwm yam muaj zog txo acids.
Stress Corrosion Cracking (SCC):Ob leeg muaj kev tiv thaiv zoo heev rau chloride kev nyuaj siab corrosion cracking, uas yog ib qho zoo dua.
Pitting thiab Crevice Corrosion:Ob leeg ua tau zoo, tab sis C276 yog qhov zoo tshaj rau 2205. C276 tuaj yeem siv rau hauv qhov chaw huab cua uas muaj qhov kub thiab txias dua thiab cov tshuaj chloride ion ntau dua.
Tsis yog -oxidizing acids (xws li sulfuric acid, hydrochloric acid):C276 ua tau zoo tshaj li 2205. Qhov kev tiv thaiv corrosion ntawm 2205 hauv cov kua qaub no yog txwv, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias. Kev tsim thiab kev tsim khoom
Ua Haujlwm Hardening:Ob qho tib si cov ntaub ntawv muaj kev cuam tshuam rau kev ua hauj lwm hardening, tab sis vim lub zog siab dua ntawm 2205 stainless hlau, nws nyuaj rau tshuab (xws li, tig, drilling).
Kev sib piv ntawm Daim Ntawv Thov Cheeb Tsam
Cov ntawv thov ntawm Hastelloy C276:
Qhov chaw xav tau tshaj plaws hauv kev lag luam tshuaj lom neeg: piv txwv li, reactors, kub exchangers, thiab piping.
Flue gas desulfurization (FGD) systems (piv txwv li, absorption towers, spray pipes).
Downhole Cheebtsam thiab cov kav dej hauv cov av qaub (siab H₂S, CO₂, Cl⁻ ib puag ncig).
Cov hlab ntsha thiab cov kav dej hauv kev lag luam tshuaj thiab tshuaj lom neeg zoo.
Cov chlorine ntub dej thiab sodium hypochlorite tuav cov cuab yeej.
Cov khoom tseem ceeb hauv kev siv khib nyiab pov tseg thiab kev kho dej khib nyiab.
Cov ntawv thov ntawm Duplex Stainless Hlau 2205:
Kev lag luam roj thiab roj: cov kav dej hauv qab hiav txwv, cov hlab ntsha siab, cov khoom siv hluav taws xob sib txawv (tshwj xeeb yog tsim nyog rau ib puag ncig uas muaj CO₂ thiab cov lej ntawm H₂S thiab Cl⁻).
Chemical tanker cia tank.
Digesters thiab bleaching khoom nyob rau hauv lub pulp thiab ntawv kev lag luam.
Petrochemical kev lag luam: atmospheric thiab nqus distillation units, tshav kub exchangers thiab piping nyob rau hauv catalytic cracking units.
Kev tsim vaj tsev: rau thaj chaw ntug dej hiav txwv, txuas hniav, thiab lwm yam kev siv uas xav tau lub zog siab thiab huab cua tsis kam (raws li kev hloov rau 316L stainless hlau).
Cov ntsiab lus ntawm kev sib piv ntawm Hastelloy C276 thiab Duplex 2205
| Khoom | Hastelloy C276 | TIAB SA 2205 |
| Hom khoom | Nickel{0}}raws li alloy | Duplex stainless hlau |
| Main Advantage | Exceptional zuag qhia tag nrho corrosion kuj | Lub zog siab + Zoo chloride corrosion tsis kam + Nqis -kev ua tau zoo |
| Qhov tsis zoo | Tus nqi siab heev | Tsis zoo corrosion kuj nyob rau hauv muaj zog txo acids; nruj vuam yuav tsum |
| Tsim nyog ib puag ncig | "Universal" rau hnyav corrosive ib puag ncig, tshwj xeeb tshaj yog cov uas muaj txo acids, siab kub, thiab siab chloride ions | Chloride- muaj qhov nruab nrab / oxidizing ib puag ncig uas yuav tsum muaj lub zog siab |
| Nqi | Siab heev | Nruab nrab mus rau siab |
Gnee Steel yog cov chaw tsim khoom ntawm ntau yam nickel{0}}raws li alloys, suav nrog Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 71807, Inconel 7107, Inconel Incoloy 800H / HT, Incoloy 825, Monel Alloy 400, Monel K500, thiab kub kub alloys. Peb tshwj xeeb hauv kev tsim khoom thiab muag khoom ntawm cov ntaub ntawv alloy. Gnee Steel cov khoom siv dav siv hauv aerospace, tshuaj, hluav taws xob, tsheb, thiab nuclear zog kev lag luam, thiab peb tuaj yeem muab cov khoom siv alloy customized raws li cov neeg siv khoom xav tau. Rau cov khoom siv alloy tus nqi nug lossis thov kom haum rau cov khoom siv alloy, thov koj xav tiv tauj peb ntawmru@gneesteelgroup.com rau ib nqe lus.