UNS S32304 Duplex Stainless Hlau

UNS S32304 duplex stainless hlau

2304 yog 23% chromium, 4% npib tsib xee, molybdenum-dawb duplex stainless hlau uas nws cov qauv yog qhov sib npaug ntawm ferrite thiab austenite. Nws muaj kev tiv thaiv corrosion zoo ib yam li lossis zoo dua li cov alloys 304L thiab 316L, tab sis muaj ze li ob npaug ntawm cov khoom muaj zog ntawm austenitic stainless hlau. Nws cov microstructure dual-theem thiab tsis tshua muaj nickel thiab cov ntsiab lus siab chromium kuj tso cai rau Duplex 2304 kom muaj kev ntxhov siab zoo dua corrosion piv rau 304 thiab 316. Nws yog feem ntau haum rau -58 o F rau 572 o F (-50 o C rau 300 oC) kub ntau thiab yog tsim los kom muaj lub zog txhua yam, zoo weldability, zoo corrosion kuj, siab tiv thaiv corrosion corrosion, zoo heev machinability, tsawg thermal expansion, zoo qaug zog zog, siab thermal conductivity thiab yooj yim ntawm manufacturing. .

2304 stainless hlau (Suav hom: 00Cr23Ni4N) yog ib tug low-alloy duplex stainless hlau tsim nyob rau hauv Sweden. Nws cov tshuaj kho kub yog li 1000 degree, thiab nws cov qauv muaj 40% -50% ferrite thiab 50% -60% austenite. , muaj cov yam ntxwv ntawm duplex stainless hlau. Nws yog hom hlau tsim los ua hom hlau uas muaj lub zog siab thiab tus nqi qis uas tuaj yeem hloov cov khoom siv austenitic stainless hlau 304L thiab 316L.

Nws tau raug lees paub los ntawm American Society of Mechanical Engineers (ASME) tias nws tuaj yeem siv rau cov kav dej hauv boilers thiab cov hlab ntsha siab, cov nroj tsuag tshuaj thiab cov refineries, thiab ntau lub teb chaws tau suav nrog cov qauv. Tus qauv Asmeskas yog UNS S32304, thiab qib Swedish kev lag luam yog SAF 2304.

daim ntawv thov:

Duplex 2304 feem ntau yog siv nyob rau hauv tib daim ntawv thov xws li alloys 304 thiab 316L. Qee qhov piv txwv ntawm cov ntawv thov no suav nrog:

Ib puag ncig uas muaj chlorine
Welded piping systems nyob rau hauv lub pulp thiab ntawv, tshuaj thiab petrochemical, thiab dej kho industries
kev thauj mus los
Thaum tshav kub kub exchanger tube
architecture, tsev, kev tsim kho
lub nkoj siab
Caustic alkali tov, organic acid
kev lag luam zaub mov

txheem:

ASTM / ASME: UNS S32304
EURONORM: FeMi35Cr20Cu4Mo2
PIB: 2.4660
Corrosion kuj:

Vim nws cov ntsiab lus chromium siab ntawm 23%, qhov corrosion kuj ntawm Duplex 2304 yog qhov sib npaug ntawm Alloy 316L.
Nws ob-theem microstructure thiab qis nickel thiab siab chromium cov ntsiab lus muab Duplex 2304 ntau dua kev nyuaj siab corrosion piv rau 304L thiab 316L tus qauv austenitic qib.
Ntau resistant rau pitting thiab crevice corrosion tshaj Alloy 316L
Kev tiv thaiv zoo dua rau kev ntxhov siab corrosion tawg hauv cov tshuaj chloride-muaj cov tshuaj aqueous tshaj Alloys 304L thiab 316L
Nws tus nqi corrosion nyob rau hauv boiling nitric acid (65%) yog siab dua li ntawm 316L alloy
Nws lub zog tawm los siab ua rau Duplex 2304 ua tau zoo hauv kev siv hnav / xeb
qauv

Lub microstructure ntawm duplex 2304 yog qhov ruaj khov heev piv rau molybdenum-muaj duplex stainless hlau.