1.4480 Stainless Steel: Corrosion Resistance & Industrial Applications

Apr 01, 2026

Tso lus

1.4480 stainless hlau, feem ntau hu ua 32760 lossis UNS S32760, yog super duplex stainless hlau uas muaj kev sib xyaw tshwj xeeb ntawm lub zog siab, zoo heev corrosion kuj, thiab weldability zoo heev. Nrog nws cov khoom sib npaug ferritic- austenitic microstructure txhim kho los ntawm kev sib ntxiv ntawm tungsten thiab tooj liab, nws muab kev tiv thaiv zoo rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg nyob rau hauv ib puag ncig chloride txhoj puab heev. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau qhov xav tau tshaj plaws hauv ntug dej hiav txwv, kev ua tshuaj lom neeg, thiab kev siv dej hiav txwv.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4480
ASTM / AISI (USA)	32760, UA S32760
Lub Npe	Super Duplex 32760, Zeron 100

Element	C	Si	Mn	P	S	Cr	Ni	Mo	N	W	Cu
Cov ntsiab lus (%)	Tsawg dua lossis sib npaug li 0.03	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua lossis sib npaug li 0.03	Tsawg dua lossis sib npaug li 0.01	24.0 - 26.0	6.0 - 8.0	3.0 - 4.0	0.20 - 0.30	0.50 - 1.00	0.50 - 1.00

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)	Kev cuam tshuam (J)
Tus nqi	Ntau dua lossis sib npaug li 550 MPa	750 - 1000 MPa	Ntau dua lossis sib npaug li 25%	Tsawg dua los yog sib npaug li 300	Ntau dua lossis sib npaug li 45 (-40 degree)

Tsis sib haum Corrosion Resistance:Muaj tus lej tshwj xeeb siab Pitting Resistance Equivalent Number (PREN> 40), muab qhov zoo tshaj plaws - hauv -chav kawm tiv thaiv pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg hauv kub, chloride-laden ib puag ncig. Qhov ntxiv tungsten ntxiv txhim kho pitting tsis kam ntawm qhov kub siab.

Muaj zog heev:Muab lub zog tawm los kwv yees li ob npaug ntawm cov qauv austenitic steels, ua kom hnyav hnyav thiab txo nqi hauv cov hlab ntsha siab thiab cov khoom siv.

Txhim kho Weldability:Qhov sib npaug sib npaug, suav nrog tungsten thiab tooj liab, txhawb kev ruaj khov microstructure nyob rau hauv welds, ua rau nws ntau zam txim rau weld dua li lwm cov qib super duplex nrog zoo corrosion kuj.

Kev Pab Cuam Zoo Tshaj Plaws:Kev ua tau zoo hauv H₂S- muaj ib puag ncig, ua rau nws zoo tagnrho rau kev siv roj thiab roj raws li NACE MR0175/ISO 15156 cov cai.

Subsea & Offshore:Christmas ntoo, manifolds, flowlines, risers, thiab umbilicals nyob rau hauv dej tob thiab roj ntau lawm.

Tshuaj & Txheej Txheem:Reactors, kem, kub exchangers, thiab piping tuav nruj sib tov ntawm acids, chlorides, thiab lwm yam corrosive media.

Pollution Control:FGD scrubbers, absorber towers, thiab tseem ceeb ductwork hauv fais fab nroj tsuag desulfurization systems.

Pulp & Ntawv:Siab -siab thiab siab - kub diesters thiab bleaching khoom.

Marine Engineering:Lub tshuab nqus tsev twj tso kua mis, lub twj tso kua mis seawater, thiab valve systems.

Desalination:Siab -cov kav dej thiab cov evaporator.

Thaum ob qho tib si yog qib super duplex, 32760 muaj cov ntsiab lus alloying ntxiv -tungsten (W) thiab tooj liab (Cu)- uas 2507 tsis ua. Tungsten ntxiv txhim khu pitting thiab crevice corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv siab kub, thiab txhim kho stability ntawm lub microstructure thaum vuam los ntawm retarding lub tsim ntawm detrimental intermetallic theem. Tooj liab txhim khu kev tiv thaiv kom tsis txhob muaj cov kua qaub xws li sulfuric acid. Qhov no muab 32760 ib qho kev ua tau zoo nyob rau hauv qhov nyuaj tshaj plaws thiab hnyav corrosive ib puag ncig, tshwj xeeb tshaj yog cov uas muaj cov tshuaj chlorides thiab acids, los yog qhov chaw ua haujlwm siab dua. Nws kuj tseem muaj kev txhim kho toughness ntawm qhov kub thiab txias zoo dua rau sulfide kev ntxhov siab tawg hauv kev pabcuam qaub.

Vuam 32760 ua raws li cov hauv paus ntsiab lus zoo sib xws (tswj cov khoom siv hluav taws xob, siv ntau tshaj -alloyed muab tub lim) tab sis tau txais txiaj ntsig los ntawm nws cov khoom zoo. Cov ntsiab lus tungsten pab tiv thaiv qhov tsim ntawm kev cuam tshuam ntawm intermetallic theem (sigma, chi) nyob rau hauv tshav kub- cuam tshuam cheeb tsam (HAZ), muab qhov dav "qhov rais ua haujlwm" thiab txo qhov kev pheej hmoo ntawm embrittlement. Kev pom zoo cua sov yog feem ntau 0.5-2.0 kJ/mm, nrog rau qhov kub thiab txias hauv qab 150 degree. Muab cov hlau sib xyaw ua ke (xws li, 32760 hom lossis Zeron 100X) muaj, lossis tshaj -cov khoom siv nickel-raws li alloyed tuaj yeem siv rau kev tiv thaiv corrosion siab tshaj. Nws tseem yuav tsum tau ua tib zoo saib xyuas cov txheej txheem tsim nyog tab sis feem ntau suav hais tias muaj qhov zoo dua weldability dua li lwm cov super duplex alloys uas zoo sib xws corrosion kuj.

32760 tau pom zoo siv raws li ntau tus qauv thoob ntiaj teb thiab los ntawm cov ntawv pov thawj loj. Nws ua tau raws li qhov yuav tsum tau muaj ntawm NACE MR0175 / ISO 15156 rau kev pabcuam qaub rau cov roj thiab roj. Nws tau pom zoo rau kev tsim lub nkoj siab nyob rau hauv ASME Boiler thiab Pressure Vessel Code (Section VIII, Division 1) thiab rau cov kav dej hauv qab ASME B31.3. Nws kuj ua tau raws li qhov yuav tsum tau muaj ntawm NORSOK M-630 rau cov ntawv thov sab nrauv. Cov khoom siv feem ntau yog muab nrog EN 10204 3.1 ntawv pov thawj thiab tuaj yeem muab kev tshuaj xyuas lwm tus neeg thib peb los ntawm cov koom haum loj (DNV, ABS, Lloyd's, BV) rau kev siv dej hiav txwv thiab ntug dej hiav txwv.

GNEE Steel muab tus hwm super duplex qib 32760 (1.4480 / UNS S32760) rau cov ntawv thov tseem ceeb tshaj plaws thiab corrosive. Peb muab cov phaj, yeeb nkab, fittings, bar, thiab forging cov ntaub ntawv nrog tag nrho traceability thiab cov ntaub ntawv pov thawj (EN 10204 3.1, NACE, thiab lwm yam). Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.