Incoloy 800H vs 800HT
Aug 10, 2026
Incoloy 800H vs 800HT: Yam Koj Yuav Tsum Xaiv Qhov twg?
| Kev xav tau | Khoom siv pom zoo | Yog vim li cas |
| Kev pabcuam kub<= 700°C | Incoloy 800 H | txaus creep zog; 800HT hwm tsis raug cai |
| Kev pabcuam kub 700-900 degree | Incoloy 800 HT | 20-30% siab dua creep-rupture zog tshaj 800H |
| Kev ua haujlwm kub> 900 degree | Incoloy 800 HT | 800H creep zog poob siab tshaj 900 degree |
| Ethylene cracking furnace coils | Incoloy 800 HT | 8-12 xyoo kev pab cuam lub neej vs 3-4 xyoo rau 800H |
| SMR radiant tubes | Incoloy 800 HT | Siab dua Al + Ti rau 100,000-teev tsim lub neej |
| SMR qhov hluav taws xob manifolds | Incoloy 800 H | Qhov ntsuas kub qis (650-800 degree); raug nqi |
| Thaum tshav kub kub exchanger tubing (< 600°C) | Incoloy 800H (los yog 800) | Creep tsis tswj tsis ua hauj lwm hom; txuag nqi |
| Cov peev nyiaj- txwv tsis pub, luv luv tsim lub neej | Incoloy 800 H | 10-20% pheej yig dua; txais tau yog tias kev pabcuam lub neej <50,000 hr |
| Carburizing ib puag ncig | Incoloy 800 HT | Siab dua Ni + Al + Ti txo cov pa roj carbon diffusion |
| Qhov sib txawv ntawm cov hlau welding | Ob leeg (ob leeg siv ERNiCr-3) | Tib qhov muab tub lim hlau; tib txheej txheem fabrication |
Qhov kev xaiv ntawmIncoloy 800H thiab Incoloy 800HTnyob ntawm masQhov kub thiab txias, kev ntxhov siab, thiab kev pabcuam lub neej.
Incoloy 800H Vs 800HT: Petrochemical Plant Selection Case
Tus thawj coj ntawm kev muag khoom ntawm cov nroj tsuag petrochemical hauv Middle East tsis ntev los no tau nug peb cov lus nug uas tuaj txog yuav luag txhua lub lim tiam: "Peb tab tom xaj cov raj rau lub tshuab hluav taws xob tshiab tshiab. Cov ntaub ntawv rau Incoloy 800H thiab 800HT zoo tib yam. Tus nqi sib txawv tsuas yog 10-15%. Peb puas xav tau H yog 800HT txaus?
Qhov no yog ib qho kev nkag siab yuam kev tshaj plaws ntawm cov khoom siv hauv kev lag luam. Ntawm daim ntawv, 800H thiab 800HT sib koom tib lub npib tsib xee- hlau-chromium puag - 30-35% Ni, 19-23% Cr, tshuav Fe. Lawv cov pa roj carbon ntau sib tshooj. Lawv chav-kub mechanical zog yog xyaum zoo tib yam. Ntau tus neeg muag khoom txawm siv tib daim ntawv pov thawj zeb rau ob qib.
Tab sis ntawm no yog qhov tseeb: nyob rau hauv ethylene cracking kev pab cuam ntawm 900 degree, kom ua hauj lwm 800HT rauv coils xa8-12xyoo ntawm kev pab cuam lub neej. Nyob rau tib lub sijhawm, 800H feem ntau ua tsis tiav3-4xyoo. Qhov ntawd 10-15% tus nqi them rau cov khoom siv yuav koj ob mus rau peb npaug ntawm lub neej ua haujlwm - thiab tshem tawm lub cub tawg uas tuaj yeem raug nqi ntau lab hauv ib hnub.
Qhov sib txawv tseem ceeb tsis yog nyob rau hauv bulk chemistry. Nws yog nyob rau hauv kev tswjaluminium + titanium content and the resulting gamma-prime (Ni3(Al,Ti)) precipitation strengthening. 800HT mandates Al+Ti >= 0.85%, thaum 800H tso cai qis li 0.30%. Ib kab lus tshwj xeeb ntawd txiav txim siab seb koj lub tshuab hluav taws xob puas muaj sia nyob 100,000-teev creep tsim lub neej lossis ua tsis tiav ntxov ntawm 40,000 teev.
Incoloy 800H (UNS N08810) yog dab tsi?
Incoloy 800H yog cov tswj tau -carbon, ntxhib- nplej version ntawm thawj Alloy 800. Nws tau tsim los daws qhov tsis txaus siab ntawm tus qauv 800 hauv kev pabcuam ntev tshaj 600℃. Lub npe "H" qhia tias carbon yog tuav rau 0.05-0.10% (nrog qhov yuav tsum tau yam tsawg kawg nkaus) thiab cov khoom yog tov-annealed ntawm 1120-1170℃los tsim ASTM grain loj 5 los yog coarser - feem ntau yog 90+ um nruab nrab grain txoj kab uas hla. Cov qauv ntxhib no txo cov qoob loo ciam teb, uas yog qhov chaw creep kab noj hniav nucleate nyob rau hauv kev ntxhov siab ntawm qhov kub siab.
UNS Number:N08810
DIN/W. Nr.:1.4958
ASTM Cov Qauv:B409 (phaj), B407 (seamless yeeb nkab), B408 (bar), B564 (forgings), B514 (welded raj)
ASME Code:Code Case 1989; SB 409, SB 407, SB 408, SB 564
Common Product Forms:Seamless yeeb nkab, welded yeeb nkab, phaj, bar, fittings, flanges, forgings
Incoloy 800HT (UNS N08811) yog dab tsi?
Incoloy 800HT yog qib premium hauv 800 tsev neeg, tsim kho rau qhov xav tau tshaj plaws - kub, siab - kev siv kev ntxhov siab. Nws tsim los ntawm 800H los ntawm nruj cov aluminium + titanium ua ke cov ntsiab lus kom tsawg kawg yog 0.85% (piv rau 0.30% rau 800H) thiab carbon rau 0.06-0.10%. Cov ntsiab lus Al+Ti siab dua no txhawb nqa nag lossis daus ntawm coherent gamma{16}}prime (Ni3(Al,Ti)) particles thaum lub sij hawm muab kev pab cuam raug siab tshaj 650 degree, muab ntxiv dag zog tshaj lub solid-solution thiab carbide mechanisms nyob rau hauv 800H. Lub npe "T" qhia qhov kev tswj xyuas nruj dua.
UNS Number:N08811
DIN/W. Nr.:1.4859
ASTM Cov Qauv:B409 (phaj), B407 (seamless yeeb nkab), B408 (bar), B564 (forgings), B514 (welded raj)
ASME Code:Code Case 1989; SB 409, SB 407, SB 408, SB 564
Common Product Forms:Seamless yeeb nkab, welded yeeb nkab, phaj, bar, fittings, flanges, forgings
Incoloy 800H Vs 800HT: Tshuaj muaj pes tsawg leeg
| Lub ntsiab | Incoloy 800H (%) | Incoloy 800HT (%) | Qhov cuam tshuam rau Kev Ua Haujlwm |
| Nickel (Ni) | 30.0 - 35.0 | 30.0 - 35.0 | Matrix zog, Cl-SCC tsis kam, txo cov pa roj carbon solubility |
| Chromium (Cr) | 19.0 - 23.0 | 19.0 - 23.0 | Cov ntaub ntawv tiv thaiv Cr2O3 oxide; oxidation & carburization kuj |
| Hlau (Fe) | >= 39.5 (bal.) | >= 39.5 (bal.) | Txo tus nqi vs tag nrho cov nickel alloys; tswj austenitic stability |
| Cov pa roj carbon (C) | 0.05 - 0.10 | 0.06 - 0.10 | M23C6 grain ciam teb carbides tus pin grain ciam teb; 800HT nruj dua txwv |
| Aluminium (Al) | 0.15 - 0.60 | 0.25 - 0.60 | Forms gamma-prime Ni3(Al,Ti); thawj ntxiv dag zog rau 800HT ntawm 650-950 degree |
| Titanium (Ti) | 0.15 - 0.60 | 0.25 - 0.60 | Stabilizes carbon li TiC; pab txhawb rau gamma- thawj tsim |
| Al + Ti (ua ke) | 0.30 - 1.20 | 0.85 - 1.20 | Qhov sib txawv tseem ceeb - 800HT's 0.85% min lav gamma-prime rau ntev- lub sij hawm nkag |
| Manganese (Mn) | <= 1.50 | <= 1.50 | Deoxidizer; Ntau dhau Mn txo oxidation kuj |
| Silicon (Si) | <= 1.00 | <= 1.00 | Deoxidizer; Sijhawm Si txhawb nqa sigma theem embrittlement |
| Sulfur (S) | <= 0.015 | <= 0.015 | Yuav tsum tau txo qis; ua rau kub shortness thiab weld cracking |
| Phosphorus (P) | <= 0.045 | <= 0.045 | Yuav tsum tau txo qis; accelerates creep cavitation ntawm grain ciam teb |
| Copper (Cu) | <= 0.75 | <= 0.75 | Cov khoom seem; tsis muaj lub luag haujlwm tseem ceeb ntxiv |
Vim li cas Al+Ti txawv qhov teeb meem hauv kev xyaum?
Qhov 0.85% Al + Ti yam tsawg kawg nkaus hauv 800HT tsis yog arbitrary. Hauv qab no kwv yees li 0.6% ua ke Al+Ti, lub gamma- thawj qhov ntim feem tsawg tsawg dhau los muab cov ntsiab lus nag lossis daus ntxiv ntawm 750-950℃. Cov hlau tsuas yog tso siab rau cov khoom siv nkaus xwb{10}} kev daws teeb meem ntxiv dag zog thiab lis ciam carbide pinning - cov txheej txheem uas degrade sai dua nyob rau hauv qhov raug thermal raug.
Nrog Al + Ti saum toj no 0.85%, cov hlau tsim tau zoo, ib nrab - sib koom ua ke ntawm Ni3 (Al, Ti) hais thaum thawj 1,000-2,000 teev ntawm kev pabcuam ntawm 750℃. Cov precipitates impede dislocation txav, tswj elevated yield zog thiab txo creep strain tus nqi. Lub zog 100,000-teev rupture ntawm 800HT ntawm 899℃(1650℃F) yog kwv yees li 17-24 MPa, piv rau 10-14 MPa rau 800H ntawm qhov kub thiab txias - 50-70% kom zoo dua.
Hauv cov ntsiab lus teb: 800HT lub raj hloov kho tau tsim rau 100,000 teev ntawm 850℃yuav ncav cuag nws lub neej tsim. Ib lub raj 800H nyob rau hauv cov xwm txheej zoo ib yam tuaj yeem ncav cuag 40,000-60,000 teev ua ntej nkag rupture, yuav tsum tau hloov ntxov ntxov thiab lub qhov cub raug kaw.
Incoloy 800H Vs 800HT: Mechanical Properties
| Khoom | Incoloy 800 H | Incoloy 800 HT | Qhov tseem ceeb |
| Tensile zog (MPa, min) | 450 | 450 | Ib yam ntawm RT; kev xaiv tsis tuaj yeem ua raws li qhov no |
| Yield zog 0.2% (MPa, min) | 170 | 170 | Ib yam; ASME tsim kev ntxhov siab ntawm qhov kub qis yog tib yam |
| Elongation (% hauv 50mm, min) | 30 | 30 | Ob leeg heev ductile; zoo formability thiab weldability |
| Hardness (HRB, max) | 95 | 95 | Ob qho tib si mos; qhia tag nrho cov mob annealed |
| Qhov ceev (g / cm3) | 7.94 | 7.94 | Zoo tib yam - kev xam qhov hnyav yog tib yam |
| Melting Range (zeeg) | 1350 - 1400 | 1350 - 1400 | Zoo ib yam |
| Elastic Modulus (GPa, RT) | 200 | 200 | Ib yam; thermal stress suav siv tib tus nqi |
| Max Continuous Service Temp (Air) | ~ 900 degree | ~ 950 degree | 800HT txuas 50℃siab dua vim yog gamma-prime stability |
| Kev daws Anneal Temp (degree) | 1120 - 1170 | 1120 - 1170 | Tib yam - tib yam khoom siv kho cua sov thiab lub voj voog |
| Grain Loj (ASTM) | >= 5 (nruab nrab) | >= 5 (nruab nrab) | Ob leeg xav tau coarse grain rau creep; min 90 um ib ASME |
| Creep-Rupture @ 750 degree, 100k hr | Nruab nrab | Siab (+20-30%) | THE Defining mechanical sib txawv |
| Creep-Rupture @ 899 degree, 100k hr | 10-14 MPa | 17-24 MPa | 800HT yog 50-70% muaj zog ntawm qhov tseem ceeb hloov kho temp |
| Impact Toughness (Charpy V, RT) | Zoo | Tsawg me ntsis | 800HT's siab dua gamma-prime me ntsis txo RT toughness |
| Thermal Fatigue Resistance | Zoo | Zoo heev | 800HT's ruaj khov microstructure resists decoking cycles |
Engineering tseem ceeb ntawm Creep Strength Sib txawv
Lub 20-30% creep-rupture kom zoo dua ntawm 800HT ntawm 750℃txhais ncaj qha rau hauv phab ntsa thickness txo los yog lub neej ncua. Rau kev hloov kho raj ua haujlwm ntawm 850℃nrog kub nrog 30 bar sab hauv siab, siv 800HT hloov 800H tuaj yeem yog:
1. Txo cov phab ntsa thickness ntawm 15-20% rau tib 100,000-teev tsim lub neej, txuag cov khoom hnyav thiab nqi, los yog
2. Txuas lub neej tsim los ntawm 60,000 mus rau 100,000+ teev ntawm tib phab ntsa tuab, ncua kev hloov pauv thiab zam kev kaw ntau - lab- duas.
Qhov no yog vim li cas EPC cov neeg cog lus rau cov tshiab chav methane hloov kho cov haujlwm yuav luag thoob ntiaj teb qhia 800HT (UNS N08811) rau radiant coil tubing. Tus nqi ntawm cov khoom siv ntxiv ntawm 10-15% rov qab tau ntau zaus dhau los ntawm kev ua haujlwm ntev thiab hloov pauv hloov pauv.
Incoloy 800H Vs 800HT: Corrosion Resistance
| Ib puag ncig | Incoloy 800 H | Incoloy 800 HT | Yeej |
| Oxidation (ua pa,<= 950°C) | Zoo heev | Zoo heev | 800 HT |
| Oxidation (ua pa,<= 900°C) | Zoo heev | Zoo heev | Khi |
| Carburizing (ethylene tawg) | Zoo | Zoo heev | 800 HT |
| Hlau plua plav (400-600 degree, siab CO) | Nruab nrab | Nruab nrab | Khi |
| Nitridation (kev pabcuam ammonia) | Zoo | Zoo | Khi |
| Chloride SCC (kub / chav dej) | Zoo heev | Zoo heev | Khi |
| Sulfidation (H2S, siab kub) | Zoo (<= 650°C) | Zoo (<= 650°C) | Khi |
| Hydrogen nres (H2 ntawm T & P siab) | Zoo heev | Zoo heev | Khi |
| Chav oxidation (supercritical) | Zoo | Zoo heev | 800 HT |
| Caustic (NaOH, siab temp) | Zoo | Zoo | Khi |
| Dilute nitric acid | Ncaj ncees | Ncaj ncees | Khi |
| Dilute sulfuric acid (txias) | Ncaj ncees | Ncaj ncees | Khi |
| Seawater txaws / immersion | pluag | pluag | Khi |
304 vs 310S vs Incoloy 800H: Carburization Qhov tob ntawm 1000℃/ 1000h (mm)
| Khoom siv | Carburization Qhov tob ntawm 1000℃/ 1000h (mm) | kwv tij Performance |
| SIB 304 | > 2.0 | Baseline (tsis zoo) |
| 310 SS UAS | 0.8 - 1.2 | 40% ntawm 304 |
| Incoloy 800 H | 0.5 - 0.8 | ~ 30% ntawm 304 |
| Incoloy 800 HT | 0.2 - 0.5 | ~ 15% ntawm 304; ~ 1/3 ntawm 310 S |
Incoloy 800H Vs 800HT: Nqe
| Cov khoom siv kos duab | Incoloy 800 H | Incoloy 800 HT |
| Phaj (USD / kg, FOB Tuam Tshoj, 2025-2026) | $12 - $20 | $14 - $22 |
| Seamless yeeb nkab (USD / kg, FOB Tuam Tshoj) | $18 - $28 | $20 - $30 |
| Bar (USD / kg, FOB Tuam Tshoj) | $16 - $24 | $18 - $26 |
| Forged Flanges (USD / kg) | $22 - $35 | $25 - $38 |
| Raw Material Premium | - | +10-20% tshaj 800H |
| Tus nqi tsim khoom | Ib yam | Tib (zoo tib yam ua) |
| Kev xeem & ntawv pov thawj | Txheem (EN 10204 3.1) | Txheem + grain loj pov thawj (ASTM E112) |
| Service Life in Reformer (teev) | 40,000 - 60,000 | 80,000 - 120,000 |
| Kev Pabcuam Lub Neej hauv Ethylene Cracking (xyoo) | 3-4 | 8-12 |
| Tus nqi ib xyoos ntawm Kev Pabcuam (tus txheeb ze) | 1.0x | 0.5 - 0.6x |
Incoloy 800H Vs 800HT: Vuam thiab Fabrication
| Parameter | Incoloy 800 H | Incoloy 800 HT |
| Weldability Rating | Zoo | Zoo |
| Pom zoo Filler Hlau | ERNiCr-3 (Inconel 82/182) | ERNiCr-3 lossis ERNiFeCr-1 (kev sib piv) |
| Preheat yuav tsum tau | No (optional 100-200°C for >25 hli) | No (optional 100-200°C for >25 hli) |
| Interpass Temperature | <= 150°C | <= 150°C |
| Max tshav kub input | 25-35 kJ / nti (6-15mm phab ntsa) | 25-35 kJ / nti (6-15mm phab ntsa) |
| Tshaj tawm -Kev kho cua sov | Feem ntau tsis tas yuav tsum tau | Feem ntau tsis tas yuav tsum tau |
| Solution Anneal Temp (yog tias PWHT) | 1100-1175℃+ ceev txias | 1100-1175℃+ ceev txias |
| NDT Requirements | RT (100% rau kev hloov kho), PT, PMI | RT (100% rau kev hloov kho), PT, PMI |
| Rov qab -Purging | Yuav tsum tau (Ar 99.995% min) | Yuav tsum tau (Ar 99.995% min) |
| Txias Khoov | Ua tau (D / t> 20, 15-20% elong.) | Ua tau (D / t> 20, 15-20% elong.) |
| Kub dabtsi yog khoov Temp | 1050-1150 degree, txias ceev | 1050-1150 degree, txias ceev |
| Sib tsoo Media | SS los yog Ni- alloy log nkaus xwb | SS los yog Ni- alloy log nkaus xwb |
Incoloy 800H Vs 800HT: Kev lag luam tiag Case
Case 1: Ethylene Cracking Furnace Coils
Teeb meem:Ethylene cracking ua hauj lwm ntawm 820-920℃nrog hydrocarbon feedstock ua pyrolytic carbon uas carburizes raj sab hauv phab ntsa. Cov raj muaj kev thermal cycling thaum lub sij hawm decoking thiab yuav tsum muaj sia nyob 100, 000+ teev ntawm kev nkag mus.
Pom zoo:Incoloy 800HT (UNS N08811) Cov.
Yog vim li cas:800HT's Al+Ti >= 0.85%. Siab carburization kuj (0.2-0.5 hli qhov tob vs 0.5-0.8 hli rau 800H) ncua raj embrittlement. Tag nrho cov ntawv tso cai loj ethylene qhia 800HT rau kev pabcuam radiant coil. Kev siv 800H yuav ua rau lub raj tsis ua haujlwm ntawm 3-4 xyoos, yuav tsum tau ua kom lub cub tawg rov tsim dua tus nqi $ 2-5 lab ntxiv rau 2-3 lub lis piam ntawm kev tsim khoom ploj.
Case 2: Steam Methane Reformer (SMR) Radiant Tubes
Teeb meem:Hydrogen ntau lawm ntawm chav methane hloov kho ua haujlwm ntawm 800-950℃nrog rau sab hauv siab ntawm 30-45 bar. Cov txheej txheem roj muaj H2, CO, CO2, CH4, thiab kab H2S. Tube tsim lub neej feem ntau yog 100,000 teev.
Pom zoo:Incoloy 800HT (UNS N08811) Cov.
Yog vim li cas:Ntawm 900℃thiab 35 bar, ASME tso cai rau kev ntxhov siab rau 800HT yog kwv yees li 50-70% siab dua 800H rau 100,000-teev rupture lub neej. Qhov no tso cai rau cov phab ntsa nyias (txuag 15-20% cov khoom hnyav) lossis lub neej ua haujlwm ntev dua. Cov tuam txhab tsim kho tshiab loj (Topsoe, Kellogg, Foster Wheeler) qhia txog 800HT rau cov kev pabcuam radiant raj.
Case 3: Heat Recovery Steam Generator (HRSG) Superheater Tubes
Teeb meem:Hauv kev sib koom ua ke - lub voj voog hluav taws xob, HRSG superheater tubing tuav cov pa taws ntawm 600-850℃. Creep yog tus tsim tsav tsheb, tab sis carburization tsis muaj kev txhawj xeeb (oxidizing cua). Kev tsim lub neej feem ntau yog 200,000 teev (25+ xyoo).
Pom zoo:Incoloy 800H (UNS N08810)
Yog vim li cas:Ntawm 600-750 degree, 800H muab lub zog txaus rau lub neej tsim tag nrho. Lub oxidizing flue roj ib puag ncig tsis sib tw 800H's carburization kuj. Qhov 10-15% kev txuag nqi ntawm qhov muaj peev xwm ntau txhiab meters ntawm superheater tubing yog qhov tseem ceeb . 800HT yuav tshaj tawm ntawm no.
case 4: Muaj Kev Kho Hniav Kub Kub Cov Cheebtsam
Teeb meem:Nruam annealing furnaces rau steel sawb ua haujlwm ntawm 850-980℃nrog huab cua lossis tiv thaiv huab cua. Cheebtsam muaj xws li cov raj radiant, lub cub tawg yob, muffle phab ntsa, thiab cov pob tawb. Cov no pom ntau txhiab lub voj voog thermal thaum lub neej 10-15 xyoo.
Pom zoo:Incoloy 800HT rau temps> 850 degree; Incoloy 800H rau temps<= 800°C
Yog vim li cas:Saum toj no 850 degree, lub superior thermal qaug zog tsis kam ntawm 800HT - muab los ntawm nws ruaj khov gamma-prime-strengthened microstructure - muab 50-100% ntev tivthaiv lub neej nyob rau hauv cyclic thermal loading. Rauv rolls nyob rau hauv tas li annealing kab pom 2000-3000 cycles ib xyoos; 800HT yob dhau 8-10 xyoo, thaum 800H yob poob ntawm 4-6 xyoo.
Yam khoom:
FAQ:
Q1: Dab tsi yog qhov txawv ntawm Incoloy 800H thiab 800HT?
A: The primary difference is the aluminum + titanium content. 800HT mandates Al+Ti >= 0.85% (UNS N08811), thaum 800H tso cai qis li 0.30% (UNS N08810). Qhov siab dua Al+Ti hauv 800HT txhawb nqa gamma-prime (Ni3(Al,Ti)) nag lossis daus ntxiv thaum lub sijhawm siab{10}}kev pabcuam kub, muab 800HT 20-30% siab dua creep-rupture zog dua 800H ntawm 750-950 degree.
Q2: Dab tsi yog qhov zoo dua rau ethylene tawg rauv tub?
A: Incoloy 800HT tau pom zoo. Nyob rau hauv ethylene cracking kev pab cuam ntawm 820-920℃nrog carburizing cua, 800HT muab 8-12 xyoo ntawm kev pab cuam lub neej piv rau 3-4 xyoo rau 800H. Txhua qhov loj ethylene cov ntawv tso cai cog lus qhia 800HT rau kev pabcuam radiant coil.
Q3: Kuv puas tuaj yeem siv Incoloy 800H hloov 800HT kom txuag tau nqi?
A: Tsuas yog tias koj qhov kev pabcuam kub<= 700°C and/or the design life requirement is less than 50,000 hours. Above 700°C with a 100,000-hour design life, 800H cannot achieve the required creep strength and will fail prematurely. The 10-15% material cost savings will be dwarfed by replacement and downtime costs.
Q4: Vim li cas Incoloy 800HT kim dua 800H?
A: The 10-20% price premium comes from tighter composition control. 800HT's narrower carbon range (0.06-0.10% vs 0.05-0.10%) and mandatory Al+Ti >= 0.85% txhais tau hais tias ntau lub zeb ntau qhov tsis lees paub thiab kev tswj hwm nruj dua, tsis yog cov khoom siv raw ntau dua.
Q5: Qhov kev pabcuam siab tshaj plaws rau Incoloy 800H vs 800HT yog dab tsi?
A: Ob leeg tuaj yeem ua haujlwm hauv huab cua txog li 1100℃rau oxidation tsis kam. Txawm li cas los xij, rau cov qauv / nkag mus- txwv tsis pub siv, 800H feem ntau yog siv mus txog 900 degree, thaum 800HT txuas mus rau 950℃. Tshaj 980℃kev pabcuam txuas ntxiv, xav txog Inconel 601 (UNS N06601) lossis 602CA.
Q6: Kuv yuav tsum siv cov hlau ua dab tsi los txuas Incoloy 800H thiab 800HT?
A: ERNiCr-3 (Inconel 82/182) yog cov khoom siv feem ntau siv rau ob qib. Rau kev sib xyaw ua ke welds, ERNiFeCr-1 tuaj yeem siv. Rau qhov sib txawv welds rau carbon steel, ERNiCr-3 yog tus qauv. Tsawg cua sov input (25-35 kJ / nti) thiab argon rov qab-purging yog yuav tsum tau.
Q7: Puas yog Incoloy 800H lossis 800HT xav tau kev tshaj tawm -weld heat treatment (PWHT)?
A: Feem ntau, tsis yog. Ob qib yog siv nyob rau hauv raws li -welded mob rau cov qauv kev pab cuam. Yog tias yuav tsum tau PWHT, nws yuav tsum yog qhov kev daws teeb meem tag nrho ntawm 1100-1175℃nrog cua txias sai. Tsis txhob ntxhov siab-relieve ntawm 850-950℃- qhov no ua rau sigma-theem embrittlement.
Q8: Kuv puas tuaj yeem txuas Incoloy 800H rau Incoloy 800HT?
A: Yog. Lawv yog tag nrho sib xws rau welding. Siv ERNiCr-3 muab tub lim hlau. Cov txheej txheem weld yog tib yam. Lub weldment yuav muaj cov khoom nruab nrab ntawm ob lub hauv paus hlau.
Q9: ASME Code Case rau Incoloy 800H thiab 800HT yog dab tsi?
A: ASME Code Case 1989 npog ob qib rau Tshooj I thiab Tshooj VIII kev tsim kho, txhais tau tias muaj kev ntxhov siab txog 899℃rau 800H thiab mus txog 949℃rau 800HT. Nco ntsoov txheeb xyuas qhov tsab ntawv tam sim no nrog koj Tus Kws Saib Xyuas Tso Cai.
Q10: Kuv tuaj yeem txheeb xyuas tau li cas tias cov khoom yog 800HT thiab tsis yog 800H?
A: Check the mill certificate for three values: (1) UNS number must be N08811, (2) Al+Ti combined must be >= 0.85%, and (3) grain size must be ASTM >= 5. PMI tuaj yeem txheeb xyuas Ni thiab Cr tab sis tsis tuaj yeem paub qhov txawv Al+Ti cov ntsiab lus - uas yuav tsum tau kuaj OES lossis XRF nrog Al/Ti muaj peev xwm.
Hais txog Zhengzhou Huitong Pipeline Equipment Co., LTD.
HT PIPE yog ib tug zoo-paub stockist thiab exporter. Peb yog cov khoom siv stainless / carbon / npib tsib xee alloy khoom xa khoom nrog 15+ kev xa tawm. Peb tsis tsuas yog muab cov kav dej, phaj, puag ncig, tab sis kuj yog cov yeeb nkab fittings, flanges, thiab lwm yam. Tiv tauj peb kom paub ntau ntxiv thiab cov nqi dawb.
✅ ISO 9001: 2015
✅ MTC 10204 3.1 3.2
✅ 100% PMI (Positive Material Identification)
✅ Ultrasonic Testing (Rau ASME VIII)
✅ Third-Kev Tshawb Fawb Kev Tshawb Fawb (SGS/BV/DNV/LR)
✅ NACE MR0175 / ISO 15156
