Incoloy 825 (UNS N08825) Cov.thiab316 stainless hlau(UNS S31600) yog ob qho tib si dav siv corrosion- cov ntaub ntawv tiv taus, tab sis lawv yog cov tsev neeg sib txawv alloy. Incoloy 825 yog npib tsib xee- hlau-chromium alloy nrog 38-46% npib tsib xee, thaum 316 SS yog hlau-raws li austenitic stainless hlau nrog tsuas yog 10-14% nickel.
Txawm hais tias 316 SS muaj tus nqi qis dua,Incoloy 825 muab kev ua haujlwm ntev tshaj - nqes sij hawm - ua tau zoonyob rau hauv ib puag ncig hnyav - nws lub neej kev pabcuam tuaj yeem ua tau 3-5 zaug ntev dua, txo qis kev hloov pauv, ncua sijhawm, thiab cov nqi tu. Phau ntawv qhia no sib piv ob qho tib si cov ntaub ntawv nyob rau hauv muaj pes tsawg leeg, txhua yam khoom, corrosion kuj, kub txwv, thiab tag nrho cov nqi ntawm cov tswv cuab los pab pawg neeg yuav khoom ua kom zoo specification.
Tiv tauj peb rau tus nqi xa tawm tshiab tshaj plaws rau 825 Alloy
Incoloy 825 (UNS N08825) yog dab tsi?
lus 825(UNS N08825, W.Nr.2.4858) yog nickel- hlau-chromium alloy nrog ntxiv ntawm molybdenum (2.5–3.5%), tooj liab (1.5–3.0%), thiab titanium (0.6–1.2%). Tsim los ntawm 1952 tshwj xeeb los tiv thaiv sulfuric thiab phosphoric acids, nws muab cov ntsiab lus siab nickel rau kev ntxhov siab corrosion cracking kuj nrog tooj liab rau txo -acid resistance thiab titanium rau intergranular corrosion tiv thaiv. Cov alloy ua raws li ASTM B424 (phaj), B408 (bar), B163 (seamless raj), thiab B564 (forging) cov qauv, thiab yog NACE MR0175 / ISO 15156 tau ntawv pov thawj rau cov roj qaub thiab roj.
Dab tsi yog 316 Stainless Hlau (UNS S31600)?
316 stainless hlau(UNS S31600, 1.4401) yog austenitic stainless hlau uas muaj 16-18% chromium, 10-14% nickel, thiab 2-3% molybdenum. Nws yog ib qho ntawm feem ntau siv stainless hlau thoob ntiaj teb, muab kev zoo corrosion kuj thiab formability. Qhov sib ntxiv ntawm molybdenum muab kev tiv thaiv zoo dua li 304 SS, tab sis nws cov ntsiab lus tsis tshua muaj npib tsib xee txwv nws qhov kev ua tau zoo hauv kev txo qis acids, chloride kev nyuaj siab corrosion cracking, thiab qaub roj ib puag ncig . 316 SS ua raws li ASTM A240 (phaj), A276 (bar), thiab A312 (pipe) qauv.
Incoloy 825 (UNS N08825) vs 316 Stainless Hlau: Kev sib piv tshuaj lom neeg
Covincoloy 825 tshuaj muaj pes tsawg leegqhia tawm vim li cas nws ua tau zoo tshaj 316 SS hauv kev tawm tsam hnyav. Cov ntsiab lus 38–46% npib tsib xee (vs. 10-14% hauv 316 SS) muab qhov tseem ceeb tiv thaiv chloride kev nyuaj siab corrosion cracking. Cov tooj liab ntxiv (1.5–3.0%) - tsis tuaj nyob rau hauv 316 SS - yog qhov tseem ceeb rau sulfuric thiab phosphoric acid tsis kam. Titanium stabilization tiv thaiv rhiab heev thaum vuam, paub tsis muaj zog hauv 316 SS.
| Element | 825 (%) | 316 SS (%) | Qhov zoo |
|---|---|---|---|
| Ni | 38.0–46.0 | 10.0–14.0 | 825 (SCC tsis kam) |
| Cr | 19.5–23.5 | 16.0–18.0 | 825 (oxidation) |
| Mo | 2.5–3.5 | 2.0–3.0 | 825 (zeeg) |
| Cu | 1.5–3.0 | - | 825 nkaus xwb (acid resistance) |
| Ti | 0.6–1.2 | - | 825 nkaus xwb (weld stability) |
| Fe | Ntau dua lossis sib npaug rau 22.0 | Tshuav | 316 (tus nqi qis) |
| C | Tsawg dua los yog sib npaug li 0.05 | Tsawg dua lossis sib npaug li 0.08 | 825 (qis carbon) |
Incoloy 825 (UNS N08825) vs 316 Stainless hlau: Mechanical Properties Comparison
Incoloy 825 muaj zog tensile thiab tawm los ntau dua 316 SS, nrog rau kev sib piv ductility. Cov ntsiab lus npib tsib xee siab dua kuj muab cov tawv tawv zoo dua ntawm qhov kub thiab txias txias thiab zoo dua creep tsis kam ntawm qhov kub siab.
| Khoom | lus 825 | 316 SIB | Yeej |
|---|---|---|---|
| Tensile zog, MPa | Ntau dua lossis sib npaug li 550 | Ntau dua lossis sib npaug li 515 | 825 |
| Tawm zog (0.2%), MPa | Ntau dua lossis sib npaug li 220 | Ntau dua lossis sib npaug rau 205 | 825 |
| Elongation,% | Ntau tshaj los yog sib npaug rau 30 | Ntau dua lossis sib npaug li 35 | 316 |
| Qhov ceev, g / cm³ | 8.14 | 8.00 | 316 |
| Melting Point, degree | 1370–1400 | 1370–1400 | Khi |
| Max Service Temp, degree | ~540 | ~425 | 825 |
Incoloy 825 (UNS N08825) vs 316 Stainless hlau: Corrosion Resistance piv
Corrosion kuj yog qhov twgAlloy 825 vs 316 stainless hlauqhov sib txawv ua tau tshaj plaws. Pitting Resistance Equivalent Number (PREN) qhia zaj dab neeg: Incoloy 825 muaj PREN ntawm kwv yees li 31, thaum 316 SS feem ntau yog 24–26. Qhov no txhais tau tias 825 muab kwv yees li 25% zoo dua pitting tsis kam nyob rau hauv ib puag ncig chloride.
| Corrosion Hom | lus 825 | 316 SIB |
|---|---|---|
| Chloride Pitting (PREN) | ~31 ★★★★☆ | ~25 ★★☆☆☆ |
| Kev nyuaj siab Corrosion Cracking | Resistant ★★★★★ | Yooj yim ★☆☆☆☆ |
| Sulfuric Acid (dilute) | Zoo heev ★★★★★ | Nruab nrab ★★☆☆☆ |
| Phosphoric Acid | Zoo heev ★★★★★ | txwv ★★☆☆☆ |
| H&sub2;S Sour Service (NACE MR0175) | Certified ★★★★★ | Tsis Certified ☆☆☆☆☆ |
| Intergranular (post{0}}weld) | Resistant ★★★★★ | Txaus ntshai ★★☆☆☆ |
Qhov sib txawv tseem ceeb tshaj plaws yogchloride kev nyuaj siab corrosion cracking (SCC). 316 SS yog qhov tsis zoo rau SCC siab tshaj 60℃hauv chloride- muaj ib puag ncig - hom tsis ua haujlwm uas tuaj yeem ua rau muaj kev puas tsuaj sai sai yam tsis muaj kev ceeb toom. Incoloy 825, nrog nws cov ntsiab lus 38-46% npib tsib xee, zoo tiv thaiv chloride SCC. Qhov no yog vim li casCov neeg ua haujlwm roj thiab roj xav tau Alloy 825 (tsis yog 316 SS) rau kev pabcuam qaub thiab cov khoom siv hauv qab.rau NACE MR0175.
Incoloy 825 Flange Marked Drawing & PMI Test Diam duab ntawm Round Bar
Incoloy 825 (UNS N08825) vs 316 Stainless hlau: Qhia xaiv ceev
| ✓ Xaiv Incoloy 825 Thaum twg | ✗ 316 SS txaus thaum twg |
|---|---|
| Kev pabcuam kub siab tshaj 425 degree | Ambient kub, me ntsis corrosion |
| Chloride concentration >500 ppm siab tshaj 60 degree | Cov dej tshiab los yog atmospheric raug |
| Sulfuric lossis phosphoric acid tuav | Khoom noj khoom haus, khoom noj siv mis, dej haus |
| H&sub2;S qaub roj ib puag ncig (NACE MR0175) | Architectural thiab hniav siv |
| Equipment lifecycle >15 xyoo hauv kev tawm tsam hnyav | Luv - lub sij hawm los yog hloov tau cov khoom |
| Nuclear roj reprocessing | Cov txheej txheem dav dav, qis- kev pabcuam corrosion |
Tus Nqi Tag Nrho Cov Tswv Cuab: Vim Li Cas Incoloy 825 Yog Tus Nqi Ntau dua -Txoj Cai
Qhov no yog ntu uas cov pab pawg muag khoom mob siab rau feem ntau. Yog, lubincoloy825 nqiib kilogram yog kwv yees li 2.5-3.5 npaug siab dua 316 SS. Tab sis tus nqi ntawm cov khoom siv tsuas yog ib feem ntawm tag nrho cov nqi ntawm qhov project. Thaum koj ua haujlwm hauv lub neej ua haujlwm, kev poob qis, kev saib xyuas, thiab kev pheej hmoo tsis ua haujlwm,Incoloy 825 yeej ntawm tag nrho cov nqi ntawm cov tswv cuab (TCO) nyob rau hauv ib qho kev nruj me ntsis.
| Nqi Factor | lus 825 | 316 SIB | 825 Qhov zoo |
|---|---|---|---|
| Tus nqi ntawm cov khoom (tus txheeb ze) | 3.0x | 1.0x | 316 pheej yig dua |
| Kev pab lub neej (acid / chloride) | 15–{1}} xyoo | 3-5 xyoos | 3-5x mas |
| Hloov zaus | Ib zaug hauv 20 xyoo | 3-4 zaug hauv 20 xyoo | 825 txuag 2-3 hloov |
| Downtime rau Failure | Tsawg kawg | Siab (tsis tau teem sijhawm) | 825 zam kev poob ntau lawm |
| Kev tshuaj xyuas / Kev Kho | Tsawg | Siab (NDT, txheej, inhibitors) | 825 txuag OPEX |
| 20-Xyoo TCO (aggressive env.) | 1.0x | 2.5–4.0x | 825 yog 60-75% pheej yig dua |
Xav txog cov khoom siv hluav taws xob sulfuric acid: chav tsev 316 SS yuav xav tau kev hloov pauv txhua 3-4 xyoo vim yog pitting thiab SCC, txhua qhov kev hloov pauv raug nqi 40-60% ntawm cov khoom qub nqi ntxiv rau 2-5 hnub ntawm cov khoom poob. Ib qho kev sib pauv Incoloy 825 hauv tib qhov kev pabcuam tuaj yeem khiav 15-20 xyoo yam tsis muaj kev hloov pauv. Tshaj li 20-xyoo lub neej voj voog, 825 units yog60-75% pheej yig dua nyob rau hauv tag nrho cov tswv cuab nqitxawm tus nqi pib dua. Rau ibNickel Raws li AlloyLub tswv yim kev yuav khoom tau tsom mus rau lub neej muaj nuj nqis ntau dua li tus nqi ua ntej, Incoloy 825 yog tus yeej meej.
⚠ Lub ntsiab lus tseem ceeb:Nyob rau hauv ib puag ncig corrosion hnyav, xaiv 316 SS kom txuag tau ntawm cov khoom siv yog ib qho kev lag luam cuav. Lub koom haum American Petroleum kwv yees tias lub sijhawm tsis tau npaj tseg los ntawm kev ua haujlwm tsis zoo ntawm cov roj thiab roj kev lag luam ntau dua $ 1.3 nphom txhua xyoo - feem ntau ntawm nws los ntawm cov hlau tsis zoo hauv kev pabcuam uas cov nickel alloys yuav tsum tau teev tseg.
Kub txwv: 825 Extends Service Range
316 SS muaj qhov ua tau zoo tshaj plaws ntawm qhov ntsuas kub ntawm kwv yees li 425℃rau kev pabcuam txuas ntxiv, saum toj no uas carbide nag lossis daus ntawm cov ciam teb ua rau rhiab heev thiab intergranular corrosion. Incoloy 825, stabilized nrog titanium, tuav corrosion kuj mus txog li 540 degree. Qhov 115℃qhov zoo dua no yuav zoo li me me, tab sis hauv kev ua tshuaj lom neeg thiab kev siv tshuaj ua kom zoo dua qhov kev ua haujlwm kub nce siab dhau sijhawm, nws tuaj yeem yog qhov txawv ntawm 5-xyoo thiab 20-xyoo kev pabcuam lub neej.
Weldability thiab Fabrication
Ob qho khoom siv tau zoo weldability, tab sis nrog qhov sib txawv tseem ceeb . 316 SS yog qhov cuam tshuam rau qhov kub thiab txias- thaj chaw cuam tshuam (HAZ) thaum lub sij hawm vuam, qhov twg carbide nag lossis daus ntawm cov ciam teb depletes chromium thiab tsim kom muaj corrosion- thaj chaw tsis muaj zog. Qhov no yog vim li cas 316L (tsawg carbon variant) yog feem ntau teev rau welded daim ntaub ntawv. Incoloy 825, nrog nws cov titanium stabilization thiab cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.05%), yog qhov muaj zog tiv thaiv intergranular corrosion tom qab vuam - tsis muaj qis -carbon variant yog xav tau. Siv ERNiFeCr-1 muab tub lim rau kev sib xyaw ua ke welds.
Daim ntawv thov Scenario
Qhov twg Incoloy 825 yog tus qauv xaiv:sulfuric acid tshav kub exchangers, phosphoric acid evaporators, roj thiab roj qaub piping (NACE MR0175), nuclear roj reprocessing, muaj kuab paug tswj scrubbers, seawater heat exchangers, thiab tshuaj tankers nqa hnyav cargo.
Qhov twg 316 SS yog qhov tsim nyog:Kev ua zaub mov thiab dej haus, cov cuab yeej siv tshuaj, kev tsim vaj tsev, cov tshuaj me me, cov dej siv tau, thiab cov khoom siv dav dav - lub hom phiaj ntawm cov khoom siv uas muaj cov tshuaj chloride thiab acid concentration tsawg tsawg.
Hais txog GNEE Alloy
Raws li ISO & CE tau ntawv pov thawjNickel Raws li Alloytus neeg muag khoom nrog 18+ xyoo dhau los, GNEE Alloy muablus 825(UNS N08825) cov khoom ntawm lub Hoobkas- tus nqi ncaj qha - phaj, bar, yeeb nkab, fittings, thiab forgings ib ASTM B424/B408/B163/B564. Tag nrho cov khoom tuaj nrog EN 10204 3.1 MTC, NDT cov ntawv ceeb toom, thiab thib peb-kev tshuaj ntsuam xyuas (SGS, BV, TÜV) txhawb nqa. Peb pab pawg neeg muag khoom suav tag nrho cov nqi ntawm cov tswv cuab thiab xaiv cov qib zoo rau lawv qhov chaw pabcuam. Tshuag muaj rau cov khoom xa tuaj hauv 30 hnub.
Ntim & Shipping
Cov khoom soj ntsuam cov khoom siv kos duab
FAQ
Q: Puas yog Incoloy 825 zoo dua li 316 stainless hlau?
A: Nyob rau hauv ib puag ncig nruj uas muaj cov kua qaub, chlorides, H&sub2;S, lossis kub siab,Incoloy 825 yog qhov zoo dua. Nws muaj qhov zoo tshaj pitting tsis kam (PREN ~ 31 vs ~ 25), kev tiv thaiv chloride kev ntxhov siab corrosion tawg, NACE MR0175 daim ntawv pov thawj kev pabcuam qaub, thiab 3-5 lub sijhawm ua haujlwm ntev dua. Rau qhov chaw me me, 316 SS yog qhov tsim nyog thiab pheej yig dua.
Q: Puas yog Incoloy 825 tus nqi ntau dua -zoo dua 316 SS?
A: Yog, nyob rau hauv ib puag ncig kev nruj nruj. Thaum tus nqi khoom ntawm Incoloy 825 yog 2.5–3.5x siab dua, nws lub neej kev pabcuam 15–20 xyoo vs. 3–5 xyoo rau 316 SS ua rau20-xyoo tag nrho cov nqi ntawm cov tswv cuab uas yog 60-75% qis duarau Incoloy 825, factoring hloov, downtime, thiab tu nqi.
Q: Puas yog Incoloy 825 stainless hlau?
A: Tsis yog.Nws yog incoloy stainless hlau- Incoloy 825 yog npib tsib xee-raws li alloy nrog 38-46% npib tsib xee. 316 SS yog hlau-raws li stainless hlau nrog tsuas yog 10-14% nickel. Cov ntsiab lus ntau dua nickel yog dab tsi muab 825 nws qhov kev tiv thaiv corrosion zoo tshaj thiab SCC kev tiv thaiv.
Q: Qhov txawv ntawm Incoloy thiab Inconel yog dab tsi?
A: CovQhov sib txawv ntawm incoloy thiab inconelyog nickel cov ntsiab lus: Incoloy qib (xws li 825) muaj 30-46% npib tsib xee nrog cov hlau tseem ceeb, optimized rau corrosion kuj nyob rau hauv nruab nrab - kub kev pab cuam. Cov qib Inconel muaj ntau dua lossis sib npaug li 50% npib tsib xee rau siab dua - qhov kub thiab txias.Incoloy vs Inconel- Incoloy yog tus nqi ntau dua - siv tau rau cov kua qaub thiab tshuaj chloride hauv qab 540℃.
Q: 316 SS puas tuaj yeem siv rau hauv kev pabcuam sulfuric acid?
A: Only in very dilute or concentrated (>90%) sulfuric acid ntawm ambient kub. Nyob rau hauv nruab nrab concentration ntau (10-80%) thiab siab kub, 316 SS corrodes sai heev. Incoloy 825, nrog nws cov tooj liab sib ntxiv, yog cov khoom siv rau sulfuric acid tuav thoob plaws txhua qhov kev xav tau thiab kub mus txog qhov kub thiab txias.
Q: Qhov kev pabcuam siab tshaj plaws ntawm Incoloy 825 vs 316 SS yog dab tsi?
A: Incoloy 825 tuaj yeem ua haujlwm txog li 540 degree, thaum 316 SS txwv rau kwv yees li 425℃rau kev pabcuam txuas ntxiv. Tshaj 425 degree, 316 SS yuav raug rau rhiab heev thiab intergranular corrosion.
