Qhov txawv ntawm Hastelloy B2 vs B3 yog dab tsi?
Sep 23, 2020
Hastelloy B-2 vs B-3: Qhov sib txawv, Cov Lus Qhia Xaiv & Daim Ntawv Thov
Hastelloy B-2 (UNS N10665) thiab B-3 (UNS N10675) yog tib lub nickel-molybdenum corrosion workhorse.
- B-2 resists boiling hydrochloric acid ntawm tej concentration, tab sis thaum nws yog welded thiab lub tshav kub- cuam tshuam cheeb tsam txias maj mam los ntawm roughly 550-900 deg C, nws precipitates brittle Ni4Mo (beta theem), poob ductility, thiab yuav yooj yim rau riam-kab nres nyob rau hauv kub HCl.
- B-3 tau tso tawm hauv xyoo 1990 los kho raws nraim li ntawd: los ntawm kev ntxiv 1-3% chromium, 1-3% hlau, thiab ceev cov pa roj carbon monoxide rau 0.01% max, nws maj mam los nag kom deb li deb uas welded B-3 cov cuab yeej feem ntau tuaj yeem nkag mus rau hauv HCl kev pabcuam raws li-welded, tsis muaj qhov yuav tsum tau ua tom qab-welded.
Corrosion kuj yog sib npaug; Qhov txawv yog thermal stability thiab fabrication kam rau ua. Rau ib qho tshiab welded HCl lossis txo - cov khoom siv kua qaub, yuav B-3.
Hastelloy B2 vs B3
| Cov lus nug txiav txim | Hastelloy B-2 (UNS N10665) | Hastelloy B-3 (UNS N10675) |
| Molybdenum,% | 26.0-30.0 | 27.0-32.0 |
| Chromium,% | 1.0 max | 1.0-3.0 |
| Cov pa roj carbon,% | 0.02 max | 0.01 max |
| Boiling HCl tsis kam | Zoo heev | Zoo heev (sib npaug) |
| Weld{0}}zone theem nag lossis daus | Siab | Tsawg heev |
| Raws li -welded HCl kev pabcuam | Feem ntau yuav tsum tau re-kev daws teeb meem anneal | Txais tau hauv cov kev pabcuam feem ntau |
| Fabrication qhov rais | Nqaim, fussy | Dav, zam txim |
| Tus nqi raug, 2026 (phaj, USD / kg) | $ 25-38 / kg | $28–42/kg(li 5-10% siab dua) |
| Kev txiav txim rau cov khoom siv welded tshiab | Qib qub txeeg qub teg | Yuav qhov no |
Qhov txawv ntawm Hastelloy B2 & Hastelloy B3
Qhov sib txawv ntawm Hastelloy B2 & Hastelloy B3 yog qhov tseem ceeb rau kev xav. Qhov khoom ntawm Alloy B2 thiab Hastelloy B3 yog tias ob qho tib si ntawm cov khoom no muab kev tiv thaiv zoo rau cov tsis yog -oxidizing acids xws li sulfuric acid thiab hydrochloric acid. Tab sis thawj qhov sib txawv ntawm ob hom khoom no yog Hastelloy B-3 muab cov yam ntxwv ntawm kev txhim kho thiab lawv kuj muaj kev txhim kho thermal stability. Tsis tas li, piv rau Hastelloy UNS N10665, Alloy B3 muaj kev ruaj ntseg ntau dua thiab qhov no ua rau muaj kev txhawj xeeb tsawg dua thaum kev pabcuam, kev tsim thiab vuam.
Hastelloy B-2 yog dab tsi?
Hastelloy B-2 (UNS N10665) yog npib tsib xee- molybdenum alloy nqa 26-30% molybdenum. Lub molybdenum yog dab tsi ua rau nws siv cov khoom siv rau kev pabcuam hydrochloric acid: nws suppresses cov tshuaj tiv thaiv cathodic uas tsav corrosion hauv kev txo qis, oxygen-dawb acids, qhov twg chromium's passive film tsis tuaj yeem muaj sia nyob. B-2 zam HCl ntawm tag nrho cov concentrations los ntawm dilute mus rau azeotropic, mus txog thiab nrog rau boiling, thiab nws ua tib yam ua kom yuam kev nyob rau hauv txo sulfuric, phosphoric, thiab hydrobromic acids.
Hastelloy B-3 yog dab tsi?
Hastelloy B-3 (UNS N10675) yog tib lub tswv yim rebalanced. Nws tuav 27-32% molybdenum, tab sis nws ntxiv 1-3% chromium, 1-3% hlau, nruj carbon rau 0.01% siab tshaj plaws, tso cai rau 3% txhua manganese, cobalt, thiab tungsten, thiab ntxiv me me txhuas thiab titanium residuals. Tsis muaj qhov ntxiv no txhim kho acid corrosion kuj, vim nws twb nyob ntawm lub qab nthab. Lawv muaj nyob los tswj qhov tshwm sim rau lub microstructure thaum lub alloy yog welded, kub-tsim, los yog tuav nyob rau hauv nruab nrab kub.
Lawv cov txheej txheem tswj hwm cov khoom lag luam yog ASTM B333 (phaj / ntawv / strip), B335 (bar), B622 (seamless yeeb nkab thiab raj), B619 / B626 (welded yeeb nkab), thiab B564 (forgings), nrog UNS N10665 nyob rau hauv tag nrho lawv.
Hastelloy B-2 vs B-3 Nqe
| Daim ntawv khoom | Hastelloy B-2 (UNS N10665) | Hastelloy B-3 (UNS N10675) | B-3 hwm |
| Phaj / Ntawv | $ 25-38 / kg | $28–42/kg | +10–15% |
| Round Bar | $26–42/kg | $30–45/kg | +10–20% |
| Welded yeeb nkab | $28–45/kg | $30–48/kg | +5–15% |
| Seamless Tube / Yeeb Nkab | $35–55/kg | $38–60/kg | +5–15% |
| Forged Fittings | $40-60/kg | $42–65/kg | +5–15% |
| Flanges | $45–70/kg | $48–75/kg | +5–10% |
Hastelloy B 2 vs B 3 Chemical Composition
| Element, wt. % | Hastelloy B-2 (UNS N10665) | Hastelloy B-3 (UNS N10675) | Nws Ua Dab Tsi |
| Nickel | Sib npaug (65 min) | Sib npaug (65 min) | Matrix; HCl tsis kam |
| Molybdenum | 26.0-30.0 | 27.0-32.0 | Core HCl/txo -acid resistance |
| Chromium | 1.0 max | 1.0-3.0 | qeeb Ni4Mo xaj; tiv taus Fe / Cu |
| Hlau | 2.0 max | 1.0-3.0 | Hloov nag lossis daus kom qeeb Ni3Mo txoj kev |
| Cov pa roj carbon | 0.02 max | 0.01 max | Tsawg carbide nucleation qhov chaw |
| Silicon | 0.10 max | 0.10 max | Weldability |
| Manganese | 1.0 max | 3.0 max | Kub ua haujlwm |
| Cobalt | 1.0 max | 3.0 max | Cov seem |
| Tungsten | - | 3.0 max | Khoom - daws lub zog |
| Aluminium | - | 0.50 max | Deoxidation, kub ua haujlwm |
| Titanium | - | 0.20 max | Txuas cov residual carbon |
| Sulfur | 0.03 max | 0.01 max | Kub- tawg paj hauv vuam |
Hastelloy B2 vs B3: Mechanical Properties
| Property (ntxiv) | B2 (UNS N10665) | B-3 (UNS N10675) | Kuaj |
| Tensile zog, MPa (ksi) min | 690 (100) | 690 (100) | ASTM E8 |
| Yield zog 0.2%, MPa (ksi) min | 310 (45) | 310 (45) | ASTM E8 |
| Elongation, % min | 40 | 40 | ASTM E8 |
| Qhov ceev, g / cm3 | 9.2 | 9.2 | - |
| Max kev pab kub (corrosion tsim) | ~ 540 ° C tswv yim cap | ~ 540 ° C tswv yim cap | - |
Hastelloy B2 vs B3: Phau Ntawv Qhia Xaiv
| Daim ntawv thov | Kev xaiv zoo dua |
| Cov khoom siv hydrochloric acid tsis muaj vuam | Hastelloy B-2 |
| Welded tshuaj reactors | Hastelloy B-3 |
| Thaum tshav kub kub exchanger tubes | Hastelloy B-3 |
| Acid twj thiab li qub | B-2 lossis B-3 nyob ntawm qhov vuam |
| Ntev - cov khoom siv ua lub neej | Hastelloy B-3 |
Kev pom zoo yuav khoom
- Rau ibme me hloov qhov, Hastelloy B-2 tuaj yeem txuag tau kwv yees li10% cov khoom siv.
- Rauloj welded khoom(reactors, kem, piping systems), B-3 tej zaum yuav muaj tus nqi qis dua tag nrho vim nws txo cov vuam-txog kev pheej hmoo thiab kev kho tom qab tsim khoom.
Hastelloy B Vs Hastelloy C
Thaum sib piv Hastelloy B vs Hastelloy C, nws yog ib qho tseem ceeb kom nco ntsoov tias Hastelloy B (UNS N10001 / W.Nr. 2.4800) belongs rau tsev neeg ntawm Hastelloy alloys uas muaj nickel-molybdenum. Hauv tsev neeg ntawm Hastelloy alloys, Alloy B qhia qhov muaj zog tshaj plaws tiv thaiv hydrochloric acid. Hastelloy C kuj yog tsev neeg ntawm Hastelloy alloys, tab sis tsev neeg no muaj nickel-molybdenum-chromium.
Hastelloy B3 Ceev & Vuam
Nrog rau kev siv Hastelloy B3 Ceev & Vuam, qhov ntom yog 9.22 g / cm³. Raws li qhov weldability mus, Alloy B3 UNS N010675 yog paub zoo rau nws zoo weldability. Yog tias cov txheej txheem vuam kom raug thiab cov txheej txheem vuam raug ua tiav, los ntawm kev siv cov txheej txheem arc vuam rau Alloy B3, nws tuaj yeem tsim cov vuam zoo. Cov txheej txheem welding feem ntau siv los welding Alloy B3 Steel yog shielded hlau arc vuam (SMAW / "Stick"), roj hlau arc vuam (GMAW / "MIG") thiab roj tungsten arc vuam (GTAW / "TIG"). Dhau li ntawm cov txheej txheem vuam uas siv rau Hastelloy B3 Hlau, muaj lwm cov txheej txheem vuam uas tseem siv tau thiab cov no suav nrog electron beam vuam (EBW), laser beam vuam (LBW), qhov chaw vuam (RSW) thiab ntshav arc vuam (PAW). Cov txheej txheem submerged arc vuam (SAW) tsis txhawb rau Alloy B3.
Hais txog Zhengzhou Huitong Pipeline Equipment Co., LTD.
HT PIPE yog ib tug zoo-paub stockist thiab exporter. Peb yog cov khoom lag luam stainless / carbon / npib tsib xee alloy 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. Hu rau 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)
✅ Thib peb-Kev Tshawb Fawb (SGS/BV/DNV/LR)
✅ NACE MR0175 / ISO 15156
Thov tus nqi:
FAQ:
1. Qhov txawv ntawm Hastelloy B-2 thiab B-3 yog dab tsi?
Corrosion kuj yog sib npaug; thermal stability tsis yog. B-2 (UNS N10665) precipitates brittle Ni4Mo nyob rau hauv lub vuam cua sov- cuam tshuam cheeb tsam thaum txias maj mam mus txog 550-900 deg C, ua rau embrittlement thiab riam-kab nres hauv HCl. B-3 (UNS N10675) ntxiv 1-3% chromium thiab 1-3% hlau, thiab ceev cov pa roj carbon monoxide rau 0.01% max, uas ua rau cov nag lossis daus ntau heev uas welded B-3 feem ntau tuaj yeem ua haujlwm raws li-welded. Tus cwj pwm ntawd weld-zone yog tag nrho cov ntsiab lus ntawm Hastelloy B-2 vs B-3 lo lus nug.
2. Qhov twg zoo dua, B-2 lossis B-3?
Rau cov khoom siv welded tshiab, B-3. Nws qhov kev ua siab ntev thiab kev pabcuam zoo li-welded tshem tawm B-2 qhov tseem ceeb tsis ua haujlwm ntawm tus nqi khoom ntawm kwv yees li 5-10%. B-2 tsuas yog rau kev kho qub qub thiab rov ua dua ntawm cov cuab yeej B-2 uas twb muaj lawm.
3. B-3 puas tuaj yeem hloov B-2 hauv kev pabcuam hydrochloric acid?
Yog lawm. B-3 yog ib qho poob- nyob rau hauv kev hloov B-2 hla kub HCl ntawm ib qho kev concentration thiab lwm yam kev pab txo cov kua qaub uas B tsev neeg siv, muab cov txheej txheem kwj yog tiag tiag txo thiab tsis muaj oxidizing ions xws li ferric lossis cupric.
4. Vim li cas B-2 thiaj li tawg tom qab vuam?
Nws cov cua sov- thaj tsam cuam tshuam tuaj yeem ua rau nag xaj Ni4Mo (beta) theem thaum nws txias maj mam dhau ntawm 550-900 deg C band. Cov platelets nkig ua kom puas ductility, yog li HAZ tawg nyob rau hauv weld shrinkage strain, thiab molybdenum -depleted aav corrode nyiam dua li riam-kab nres hauv HCl.
5. Puas yog B-3 xav tau kev kho cua sov tom qab vuam?
Tsis tas yuav tsum muaj nyob rau hauv feem ntau cov kev pabcuam. B-3 tau tsim los ua -welded lag luam. Rau qhov hnyav lossis kev nyab xeeb-HCl tseem ceeb lub luag haujlwm tseem ceeb tom qab vuam tshuaj anneal tseem pom zoo, tab sis nws yog ib qho kev xaiv, tsis yog qhov yuav tsum tau ua raws li nws yog rau B-2.
6. Dab tsi welding muab tub lim yog siv rau B-2 thiab B-3?
ERNiMo-7 / ENiMo-7 for B-2 and ERNiMo-10 / ENiMo-10 for B-3 (AWS A5.14 / A5.11). Tsis txhob txuas nrog C-276 muab tub lim, uas nws chromium tsim ob peb galvanic tiv thaiv B-tsev neeg puag hlau hauv HCl.
7. Puas yog B-2 thiab B-3 resistant rau nitric acid?
Tsis yog. Ob lub alloys tsis muaj chromium passive zaj duab xis thiab raug rhuav tshem los ntawm oxidizing media, nrog rau nitric acid thiab HCl paug nrog ferric lossis cupric ions. Kev pabcuam oxidizing yog C-276 lossis C-22.
8. Tus lej UNS rau B-2 thiab B-3 yog dab tsi?
B-2 yog UNS N10665; B-3 yog UNS N10675. Tus thawj Hastelloy B yog UNS N10001. Ib txwm qhia tus lej UNS, txij li cov duab kos qub tseem tuaj yeem siv N10001.
9. Hastelloy B-3 nqi npaum li cas rau ib kg xyoo 2026?
Qhia tias USD$28–42/kgrau phaj, USD$26–40/kgrau bar, thiab USD$38–60/kgrau seamless yeeb nkab FOB Tuam Tshoj hauv 2026. B-3 khiav txog 5-10% saum B-2 rau tib daim ntawv. Molybdenum ntawm yim xyoo siab thiab npib tsib xee ze ntawm USD 16,500 / t tsav qib.
10. Vim li cas B-2 thiab B-3 thiaj li kim?
Lawv nqa 26-32% molybdenum, thiab molybdenum oxide pauv ze ntawm USD 22-24 / lb hauv nruab nrab-2026. Ntawm tus nqi molybdenum hauv ib kilogram yog tsim nyog kwv yees li ntawm USD 13-15, ntxiv rau USD 10-11 rau qhov sib npaug npib tsib xee, ua ntej ua haujlwm.
11. Cov qauv twg them rau B-2 thiab B-3?
Tib yam khoom ASTM cov qauv npog ob qho tib si hauv lawv cov lej UNS: B333 rau phaj / ntawv / sawb, B335 rau pas nrig thiab bar, B622 rau seamless yeeb nkab thiab raj, B619 / B626 rau welded yeeb nkab, thiab B564 forgings thiab flanges.
12. Kuv puas tuaj yeem siv B-3 welded yeeb nkab hauv HCl kev pabcuam?
Yog lawm, yog tias nws tau muab cov kev daws teeb meem-annealed tom qab welding nrog weld-seam kuaj, thiab qhov zoo tshaj plaws tau txheeb xyuas los ntawm ASTM G28 Method Ib qho kev kuaj corrosion uas qhia qhov weld- cheeb tsam tus nqi li ntawm 20% ntawm lub hauv paus hlau. B-2 welded yeeb nkab muaj tib yam yuav tsum tau tab sis nrog deb tsawg dua.
13. Qhov ntsuas kub li cas rau B-2 thiab B-3?
Kev pabcuam corrosive feem ntau yog capped ze 540 deg C, thiab ob qho tib si muaj kev cuam tshuam rau theem hloov pauv yog tias lawv nyob hauv nruab nrab - qhov kub thiab txias thaum lub sijhawm tsim khoom. Lawv yog corrosion alloys, tsis siab -kub lub zog alloys; lawv lub hnab ntawv muaj txiaj ntsig yog txhais los ntawm chemistry, tsis yog los ntawm creep.
14. Dab tsi yog riam -kab nres?
Qhov nqaim ntawm qhov kev nyiam tshaj plaws corrosion khiav raws txoj kab fusion ntawm ib qho weld hauv sensitized B-2. Thaum tshav kub kub- thaj chaw cuam tshuam muaj nag lossis daus molybdenum- nplua nuj Ni4Mo, tawm hauv cov matrix molybdenum-depleted nyob ib sab, yog li HCl corrodes cov bands sai dua lub suab puag hlau.
15. Puas muaj laj thawj yuav B-2 hloov B-3?
Tsuas yog cov qub txeeg qub teg: sib piv B-2 cov khoom siv kho lossis rov ua dua, lossis cov neeg siv khoom tshwj xeeb sau ua ntej B-3 dhau los ua tus qauv. Ntawm thawj tus nqi B-2 yog pheej yig dua me ntsis; ntawm lub neej-kuj nqi nws feem ntau yog qhov kev xaiv kim dua.
Hais txog Zhengzhou Huitong Pipeline Equipment Co., LTD.
HT PIPE yog ib tug zoo-paub stockist thiab exporter. Peb yog cov khoom lag luam stainless / carbon / npib tsib xee alloy 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. Hu rau 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)
✅ Thib peb-Kev Tshawb Fawb (SGS/BV/DNV/LR)
✅ NACE MR0175 / ISO 15156
