Hastelloy B2 Phaj vs C276: Qhov txawv

Thaum xaiv cov nickel alloy rau qhov chaw muaj corrosive heev, ob lub npe feem ntau tuaj: Hastelloy B2 thiab Hastelloy C276. Ob leeg yog cov khoom zoo tshaj plaws los ntawm Haynes International. Tab sis lawv ua hauj lwm sib txawv heev.

Hastelloy B2 Plate vs C276 Difference

Kab lus no piav qhia meej qhov sib txawv ntawm Hastelloy B2 phaj thiab Hastelloy C276.

Hastelloy B2 muaj ntau molybdenum thiab tsis muaj chromium. Hastelloy C276 muaj chromium thiab tungsten.

Hastelloy B2 (UNS N10665):

Nickel: ~ 65%

Molybdenum: ~ 28%

Chromium: 0% (tsawg dua 1%)

Hlau: ~ 2%

Hastelloy C276 (UNS N10276):

Nickel: ~ 57%

Molybdenum: ~ 16%

Chromium: ~ 15.5%

Tungsten: ~ 3.5%

Hlau: ~ 5.5%

Chromium ua rau C276 resistant rau oxidizing tshuaj (xws li nitric acid los yog chlorine ntub dej). B2 tsis muaj chromium, yog li nws tsis tuaj yeem ua haujlwm oxidizing ib puag ncig.

Hastelloy B2resists ntshiab txo cov kua qaub (xws li hydrochloric acid) zoo dua C276, tab sis C276 resists ob qho tib si txo thiab oxidizing acids.

Hastelloy B2 yog qhov kev xaiv zoo tshaj plaws rau hydrochloric acid ntawm txhua qhov chaw thiab qhov kub thiab txias, nrog rau dilute sulfuric acid. Txawm li cas los xij, nws ua tsis tau sai thaum muaj cov oxidizers me me (piv txwv li, ferric ions, tooj liab ions, lossis yaj oxygen).

Hastelloy C276 tsis muaj zog nyob rau hauv cov ntshiab hydrochloric acid li B2, tab sis nws ua hauj lwm sib xyaw acids, chlorides, chlorine ntub dej, thiab hypochlorite tau yooj yim. Nws yog ntau yam corrosion-resistant alloy.

Txoj cai yooj yim:

Tsuas yog hydrochloric los yog dilute sulfuric? → B2.

Tsis paub los yog cov tshuaj sib xyaw? → C276.

Welding Heat Exposure Difference

Hastelloy B2 nquag tawg tom qab vuam tshwj tsis yog tswj nruj heev; Hastelloy C276 tseem nyob ruaj khov nyob rau hauv feem ntau vuam tej yam kev mob.

Hastelloy B2 muaj qhov nqaim qhov kub thiab txias. Yog rhuab mus rau 650-870℃(1200-1600℃F) thaum lub sij hawm vuam los yog kev kho cua sov tsis tsim nyog, nws tsim nkig intermetallic theem (Ni-Mo precipitates). Qhov no ruins ductility thiab ua rau weld cracking. Txhawm rau zam qhov no, B2 yuav tsum tau welded nrog cov cua kub qis heev thiab feem ntau yuav tsum muaj kev tshaj tawm -weld solution anneal.

Hastelloy C276kev zam txim ntau dua. Nws resists grain ciam precipitate tsim thaum vuam. Koj tuaj yeem vuam C276 siv cov txheej txheem txheej txheem (TIG, MIG, thiab SMAW) yam tsis muaj kev tshaj tawm tshwj xeeb -weld heat treatment. Qhov no yog vim li cas C276 yog cov neeg ua haujlwm hauv kev lag luam.

Yog tias koj lub khw tsis muaj kev tswj xyuas nruj, zam B2 daim hlau. siv C276.

Hastelloy B2 daim hlau yog siv yuav luag tshwj xeeb hauv cov kev pabcuam ntshiab txo cov kua qaub; C276 daim hlau tshwm nyob rau hauv ntau yam kev lag luam.

Daim ntawv thov Hastelloy B2:

Hydrochloric acid evaporators thiab cia tank

Lub tshuab nqus tsev rau cov kua qaub chlorides

Reactors rau kws tshuaj intermediates (tsis muaj oxidizing kab mob)

Flue gas desulfurization – tab sis tsuas yog nyob rau hauv oxygen- thaj chaw dawb xwb

Daim ntawv thov Hastelloy C276:

Cov txheej txheem tshuaj lom neeg rau cov kua qaub sib xyaw (HCl + H2SO4 + chlorides)

Pollution Control scrubbers (ntub chlorine ib puag ncig)

Offshore platforms (seawater + H2S)

Nuclear roj reprocessing

Ntawv zeb bleach nroj tsuag

Yog tias koj pom B2 hauv cov nroj tsuag tshuaj, koj paub tias cov txheej txheem nruj me ntsis txo. Yog tias koj pom C276, cov txheej txheem yuav muaj qhov xav tsis thoob.

Hastelloy C276 muaj zog tensile ntau dua thiab zoo dua ductility dua Hastelloy B2 ntawm chav tsev kub.

Khoom	Hastelloy B2	Hastelloy C276
Tensile zog (MPa)	760	790
Yield zog (MPa)	350	355
Elongation (%)	40	50
Hardness (HRB)	85	87

Hauv kev xyaum, ob qho tib si muaj zog thiab tsim tau. Txawm li cas los xij, C276 qhov elongation siab dua ua rau nws yooj yim dua rau txias - ua rau cov duab nyuaj xws li lub taub hau taub hau lossis hloov pauv conical. B2 yog me ntsis nkig dua tom qab vuam yog tias tsis zoo annealed.

Hastelloy B2 daim hlau feem ntau yog 15-25% kim dua C276 daim hlau ib phaus.

Cost Difference

Vim li cas? B2 muaj ze li ntawm 28% molybdenum. Molybdenum yog kim kim (feem ntau $ 20-40 ib phaus). C276 tsuas yog siv 16% molybdenum ntxiv rau chromium (nqi dua) thiab tungsten. Txawm li cas los xij, B2 qhov kev thov txwv thiab kev tsim tshwj xeeb kuj ua rau cov nqi siab.

Piv txwv tus nqi (raws li ntawm 2025):

Hastelloy C276 phaj: $45–65 ib phaus

Hastelloy B2 phaj: $55-80 ib phaus

Lus Cim: Cov nqi hloov pauv nrog nickel thiab molybdenum kev lag luam. Nco ntsoov thov ib daim ntawv tsocai tam sim no.

Hastelloy C276 daim hlau yog stocked thoob ntiaj teb; Hastelloy B2 daim hlau yog tshwj xeeb - xaj hauv ntau thaj tsam.

C276 yog ib qho ntawm feem ntau cov nickel alloys. Cov khoom lag luam loj (Haynes, Rolled Alloys, High Performance Alloys) khaws C276 phaj, ntawv, bar, thiab yeeb nkab hauv Tshuag. Lub sij hawm xa tuaj: hnub mus rau lub lis piam.

B2 yog cov khoom lag luam niche. Cov neeg muag khoom feem ntau tsis npaj B2 daim hlau. Koj feem ntau xaj ncaj qha los ntawm Haynes International lossis ib lub zeb tshwj xeeb. Lub sij hawm xa tuaj: 8-12 lub lis piam.

Cov lus qhia rau cov neeg yuav khoom: Yog tias koj xav tau cov khoom sai, xaiv C276. Tsuas yog tos B2 yog tias koj cov txheej txheem xav tau nws.

Hastelloy C276 tuaj yeem welded siv cov khoom sib xyaw (ERNiCrMo-4); Hastelloy B2 xav tau kev sib txuam B2 muab tub lim thiab tswj kev kub ceev.

C276 vuam: Siv cov hlau muab tub lim ERNiCrMo-4 (tib yam li C276). Tsis muaj preheat. Tsis xav tau kev kho cua sov tom qab vuam. Interpass kub hauv qab 175℃(350℃F). Ua haujlwm nrog TIG, MIG, thiab welding.

B2 welding: Siv qhov sib txuam Hastelloy B2 muab tub lim (ERNiMo-10). Preheat rau 150℃(300℃F) siab tshaj plaws. Tswj qhov ntsuas kub kom zoo. Tom qab vuam, cov tshuaj anneal ntawm 1060℃(1950℃F) ua raws li sai quench. Hla cov kauj ruam no - thiab koj cheeb tsam weld yuav tawg nyob rau hauv kev ntxhov siab.

Cov lus xaus yooj yim: Rau feem ntau cov khw muag khoom, C276 yog qhov kev nyab xeeb dua, kev xaiv yooj yim dua.

Ob qho khoom siv tau tswj hwm los ntawm cov qauv kev tsim vaj tsev thoob ntiaj teb nruj, tab sis lawv poob rau hauv cov ntawv pov thawj sib txawv uas tswj hwm lawv cov kev sim thiab kev tsim cov txheej txheem.

Hastelloy B2 Phaj: Thaum peb lub chaw ua haujlwm B2, nws yuav tsum nruj me ntsis ua raws li ASTM B333 thiab ASME SB-333 specifications. Cov qauv no xyuas kom cov hlau raug yaj thiab dov kom nws muaj kev tiv thaiv tshwj xeeb rau hydrochloric acid.

Hastelloy C276 Phaj: C276 daim hlau yog tsim thiab ntawv pov thawj raws li ASTM B575 thiab ASME SB-575. Cov txheej txheem no txheeb xyuas qhov sib npaug ntawm chromium thiab tungsten xav tau rau nws qhov dav-spectrum tshuaj tiv thaiv.

Cov ntaub ntawv kev yuav khoom thiab cov ntawv tshaj tawm kev tshaj lij yuav tsum tau hais txog qhov tseeb ASTM lossis ASME specification. Kev xaj ib lub phaj yam tsis tau txheeb xyuas cov ntawv pov thawj tshwj xeeb no cuam tshuam cov qauv kev ncaj ncees ntawm cov khoom kawg.

Hais lus raws li ib tug neeg uas tau muab ob qho tib si alloys rau ntau tshaj 15 xyoo:

Hastelloy C276 yog qhov kev xaiv ntse dua rau 95% ntawm cov ntawv thov. Nws yog ntau yam, zam txim rau fabricate, thiab dav muaj. Tsuas yog siv Hastelloy B2 thaum koj muaj lub sijhawm ntev - khiav, cov txheej txheem hydrochloric acid ntshiab nrog kev paub tseeb ntawm tsis muaj oxidation.

Thaum tsis ntseeg,hu rau koj tus neeg muag khoom alloynrog koj cov txheej txheem cov ntsiab lus. Lawv yuav pab koj kom tsis txhob muaj qhov yuam kev kim.