SMO254 (UNS S31254) rau molybdenum stainless hlau
Khoom npe: SMO254 / UNS S31254
Cov npe thoob ntiaj teb: 254SMO, UNS S31254, W.-Nr. 1.4547, F44, NAS 185N, 00Cr20Ni18Mo6CuN, 6Mo
Cov qauv kev coj ua: ASTM A240 / ASME SA-240, ASTM A276, ASTM A182 / ASME SA-182, ASTM A312 / ASMES A312
Cov khoom xyaw tseem ceeb: Carbon (C) Tsawg dua lossis sib npaug rau {{{0}}}.{{10}}2, Manganese (Mn) Tsawg dua lossis sib npaug rau 1.00 , Nickel (Ni) 17.5 ~ 18.5, Silicon (Si) Tsawg dua lossis sib npaug rau 0.8 Phosphorus (P) Tsawg dua lossis sib npaug rau 0.03, Sulfur (S ) Tsawg dua lossis sib npaug ntawm 0.01, Chromium (Cr) 19.5 ~ 20.5, tooj liab (Cu) 0.5 ~ 1.0, molybdenum (Mo) 6.0 ~ 6.5, nitrogen (N) 0.18 ~ 0.22
Lub cev muaj zog: 254SMO ntom: 8.24g / cm3, melting point: 1320-1390 degree, magnetic zog: tsis muaj
Kev kho cua sov: kev txuag cua sov ntawm 1150-1200 degree rau 1-2 teev, cua txias sai lossis dej txias.
Mechanical zog: Tensile zog: σb Ntau tshaj los yog sib npaug rau 655Mpa, Yield zog σb Ntau tshaj los yog sib npaug rau 310Mpa: Elongation: δ Ntau tshaj los yog sib npaug rau 35%, Hardness: 182-223 (HB)
Kev tiv thaiv corrosion thiab kev siv tseem ceeb: 254SMO stainless hlau yog ib qho zoo heev corrosion-resistant super austenitic stainless hlau, tsim rau ib puag ncig nrog halides thiab acids, thiab yog dav siv nyob rau hauv hnyav ua hauj lwm tej yam kev mob xws li high-concentration chloride ion media thiab seawater. Hauv ntau qhov xwm txheej hauv kev lag luam hauv cov kua qaub, tshwj xeeb tshaj yog nyob rau hauv cov kua qaub uas muaj halides, 254SMO yog qhov zoo tshaj rau lwm cov hlau tsis muaj steel, thiab qee qhov tuaj yeem sib piv rau Hastelloy thiab titanium. Cov ntsiab lus qis carbon thiab siab molybdenum cov ntsiab lus ua rau nws muaj kev tiv thaiv zoo rau pitting corrosion thiab crevice corrosion, thiab zoo heev tsis kam mus rau intergranular corrosion. Nws yog tus nqi zoo stainless hlau uas tau siv dav hauv kev lag luam tshuaj lom neeg, desulfurization thiab kev tiv thaiv ib puag ncig hauv tsev thiab txawv teb chaws. dav siv.
Nyob rau hauv cov ntshiab sulfuric acid, 254SMO muaj ntau dua corrosion kuj tshaj 316 zoo tib yam stainless hlau. Txawm li cas los xij, piv nrog 904L (NO8904) stainless hlau ntawm qhov siab, qhov kev tiv thaiv corrosion ntawm 254SMO yog me ntsis qaug zog. Ntawm cov sulfuric acids uas muaj chloride ions, 254SMO muaj qhov zoo tshaj plaws corrosion kuj. Vim tias qhov muaj peev xwm ntawm cov xeb hauv zos thiab cov xeb tsis sib xws, 316 zoo tib yam stainless hlau tsis tuaj yeem siv rau hauv hydrochloric acid, tab sis 254SMO tuaj yeem siv rau hauv dilute hydrochloric acid ntawm qhov kub thiab txias. Tsis tas yuav txhawj xeeb txog pitting corrosion nyob rau hauv cov cheeb tsam hauv qab txoj kab ciam teb. Tab sis kev siv zog yuav tsum tau ua kom tsis txhob muaj qhov khoob. Nyob rau hauv fluorosilicic acid (H2SiF4) thiab hydrofluoric acid (HF), corrosion resistance range ntawm zoo tib yam stainless hlau yog heev txwv, thaum 254SMO yuav siv tau nyob rau hauv ib tug haum ntau yam ntawm concentration thiab kub.
Txhawb cov khoom siv vuam thiab cov txheej txheem vuam: 254SMO vuam siv cov khoom zoo 625 alloy series vuam cov ntaub ntawv, uas yog ERNiCrMo-3 vuam hlau thiab ENiCrMo-3 vuam pas nrig. Cov khoom siv vuam loj yog Φ1.0, 1.2, 2.4, 3.2, thiab 4.0. Lub hauv paus chiv keeb yog: Kazakhstan, Tebchaws Meskas. , American SMC thiab Deutsche Nickel, thov hu rau peb rau cov txheej txheem vuam thiab cov lus qhia.
Cov khoom lag luam raws li txoj cai: Cov Tshuag loj ntawm 254SMO stainless hlau daim hlau yog 0.5mm-18mm, thiab cov khoom loj ntawm cov tuav yog Φ12mm-Φ250mm. Cov kav dej, fittings thiab lwm yam tuaj yeem ua raws li cov neeg siv khoom xav tau. Lub hauv paus ntsiab lus ntawm cov ntaub ntawv suav nrog Nyiv Metallurgy, Nyiv Nippon Steel thiab Sumitomo Hlau thiab Sweden OUTOKUMPU. Muab daim ntawv pov thawj khoom qub, daim ntawv tshaj tawm kev lis kev cai thiab daim ntawv pov thawj ntawm keeb kwm.
Daim ntawv thov teb muaj xws li: roj av thiab petrochemical cov cuab yeej, xws li cov twj tso kua mis hauv cov khoom siv petrochemical, cov khoom siv pulp thiab ntawv bleaching, xws li pulp digesters, bleaching equipment, chim thiab siab rollers rau lim scrubbers, fais fab nroj tsuag flue gas desulfurization khoom, feem ntau yog siv cov khoom siv xws li : ntauwd lub cev, flue, baffle phaj, sab hauv, tshuaj tsuag system, thiab lwm yam ntawm lub nqus ntauwd, offshore systems los yog seawater kho, xws li nyias-walled condensation kav dej txias los ntawm seawater nyob rau hauv fais fab nroj tsuag, seawater desalination kho cov cuab yeej, txawm nyob rau hauv seawater. Nws tseem tuaj yeem siv rau hauv cov khoom siv uas tsis tuaj yeem ntws, kev lag luam desalination, xws li cov khoom siv ntsev los yog cov khoom siv desalination, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, tshwj xeeb tshaj yog cov khoom siv hluav taws xob hauv cov chaw ua haujlwm nrog cov chloride ions.
