1.4462 (UNS S32205 / 2205) Duplex Stainless Steel Properties

Apr 03, 2026

Tso lus

1.4462 stainless hlau, feem ntau hu ua Duplex 2205 los yog UNS S32205, yog cov feem ntau siv duplex stainless hlau thoob ntiaj teb. Nrog nws cov khoom sib npaug ferritic- austenitic microstructure, nws muaj kwv yees li ob npaug ntawm cov khoom muaj zog ntawm cov qauv austenitic stainless hlau zoo li 304 thiab 316, ua ke nrog kev ua haujlwm zoo heev rau kev ntxhov siab corrosion tawg, pitting, thiab crevice corrosion. Qhov tshwj xeeb sib xyaw ua ke ntawm lub zog siab thiab zoo dua corrosion ua rau nws cov khoom ntawm kev xaiv rau kev thov nyob rau hauv kev siv tshuaj lom neeg, roj thiab roj, marine ib puag ncig, thiab pulp thiab ntawv industries.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4462
ASTM / AISI (USA)	2205, UNS S32205 / UNS S31803
JIS (Nyiv)	SUS329J3L
KS (Korea)	STS329J3L
Lub Npe	TIAB SA 2205

Element	C	Si	Mn	P	S	Cr	Ni	Mo	N
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 2.0	Tsawg dua lossis sib npaug li 0.03	Tsawg dua lossis sib npaug li 0.02	21.0 - 23.0	4.5 - 6.5	2.5 - 3.5	0.14 - 0.20

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)	Kev cuam tshuam (J)
Tus nqi	Ntau dua lossis sib npaug li 450 MPa	620 - 880 MPa	Ntau dua lossis sib npaug li 25%	Tsawg dua lossis sib npaug li 290	Ntau dua lossis sib npaug rau 100 (20 degree)

Siab zog thiab zoo heev Fatigue Resistance:Cov qauv duplex muab lub zog tawm los siab (kwv yees li ob npaug ntawm cov qib austenitic), tso cai rau nyias, sib dua cov qauv thiab cov khoom, txo cov nqi khoom thiab qhov hnyav.

Qhov zoo tshaj plaws Corrosion Resistance:Muaj kev tiv thaiv zoo heev rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion cracking (SCC), tshwj xeeb tshaj yog nyob rau hauv ib puag ncig chloride, nrog PREN feem ntau 34-35.

Zoo Weldability:Yuav tau welded siv cov txheej txheem ib txwm, txawm hais tias yuav tsum tau saib xyuas kom muaj qhov sib npaug microstructure hauv qhov vuam thiab cua sov- thaj tsam cuam tshuam.

Zoo thermal conductivity:Cov thermal conductivity ntau dua li qib austenitic, muaj txiaj ntsig zoo rau kev siv hluav taws xob hloov hluav taws xob.

Roj & Roj:Cov hlab ntsha siab, cov kav dej, cov dej ntws, cov khoom siv hluav taws xob sib txawv, thiab cov khoom siv sab nraud.

Tshuaj thiab Petrochemical:Tank, reactors, kab, thiab kav kav dej tuav corrosive media nrog rau cov tshuaj chlorides thiab acids.

Pulp & Ntawv Kev Lag Luam:Cov khoom siv tshuaj tua kab mob, tshuaj tua kab mob, thiab cov khoom siv tshuaj chloride -muaj cawv.

Marine & Offshore:Seawater piping systems, kiv cua shafts, desalination nroj tsuag, thiab marine hardware.

Pollution Control:FGD scrubbers, ducting, thiab chimney liners.

Structure Engineering:Cov choj, cov tso tsheb hlau luam, thiab cov yam ntxwv ntawm cov vaj tse nyob hauv ib puag ncig corrosive.

Kev ua zaub mov:Cov khoom siv uas yuav tsum tau muaj zog thiab corrosion kuj.

Duplex 2205 muaj kwv yees li ob npaug ntawm qhov kev tawm dag zog ntawm 316L (450 MPa vs . 200 MPa), muab qhov hnyav hnyav -txuag lub peev xwm hauv cov qauv tsim thiab tso cai rau cov phab ntsa nyias nyias hauv siab- cov khoom siv. Nws kuj qhia tau tias muaj kev tiv thaiv zoo tshaj rau kev ntxhov siab corrosion cracking (SCC) hauv chloride ib puag ncig, qhov twg 316L yuav ua tsis tiav. Nrog PREN ntawm 34-35 vs . 316L's PREN ntawm 24-26, 2205 muaj qhov zoo dua pitting thiab crevice corrosion kuj, ua rau nws tsim nyog rau cov kev mob hnyav dua xws li dej hiav txwv thiab dej lim dej. 2205 kuj muaj kev tiv thaiv zoo dua rau kev yaig thiab hnav. Txawm li cas los xij, 316L muaj kev tsim tau zoo dua, tus nqi qis dua rau cov ntu nyias, thiab muaj ntau dua. Qhov kev xaiv nyob ntawm cov ntawv thov tshwj xeeb, nrog 2205 xaiv qhov twg nws lub zog siab dua thiab kev tiv thaiv corrosion ua pov thawj tus nqi hwm.

Ob qho kev xaiv xa mus rau 2205 duplex stainless hlau, tab sis nrog cov kev xav tau sib txawv me ntsis. UNS S31803 yog thawj qhov tshwj xeeb nrog ntau qhov sib txawv (Cr 21.0-23.0%, Ni 4.5-6.5%, Mo 2.5-3.5%, N 0.08-0.20%). UNS S32205 yog qhov tshwj xeeb tsis ntev los no nrog kev tswj nruj dua thiab siab dua qhov tsawg kawg nkaus nitrogen (0.14-0.20%) thiab molybdenum (3.0-3.5%) kom ntseeg tau tias cov khoom zoo thiab corrosion kuj. Kev tsim khoom niaj hnub no feem ntau ua tau raws li S32205 qhov yuav tsum tau ua, thiab nws feem ntau suav hais tias yog qhov kev xav tau tshwj xeeb rau cov ntawv thov tseem ceeb. S32205 muaj kev lees paub ntau dua corrosion kuj thiab txhua yam khoom piv rau qhov dav S31803 specification.

Lub hom phiaj tseem ceeb hauv vuam 2205 yog khaws cia qhov sib npaug ntawm 50/50 ferrite-austenite microstructure hauv vuam thiab cua sov- thaj tsam cuam tshuam kom muaj kev tiv thaiv corrosion thiab txhua yam khoom. Cov kev coj ua tseem ceeb suav nrog:

Siv qhov sib txuam lossis tshaj - alloyed muab tub lim (feem ntau 2209 nrog ntau dua nickel)

Tswj cov khoom siv hluav taws xob (0.5-2.5 kJ / mm pom zoo)

Ua kom muaj kev tiv thaiv roj (feem ntau Ar + 2-3% N₂) kom tswj cov qib nitrogen

Khaws qhov kub ntawm qhov sib txawv hauv qab 150℃kom tsis txhob overheating thiab tsim ntawm brittle intermetallic theem

Preheating feem ntau tsis tas yuav tsum tau

Tswj kev tshaj tawm-weld txias npaum li cas thiab tsis txhob raug ncua ntev hauv 600-1000℃ntau yam los tiv thaiv kev tsim ntawm sigma theem

Cov txheej txheem vuam kom raug thiab kev tsim nyog yog qhov tseem ceeb rau kev siv tseem ceeb

GNEE Steel muab cov khoom siv siab -zoo Duplex 2205 (1.4462) stainless hlau hauv phaj, ntawv, yeeb nkab, raj, bar, thiab cov ntaub ntawv haum. Peb txhawb nqa koj cov haujlwm nrog cov kev pabcuam ua tiav suav nrog kev txiav, khoov, sib sau, thiab vuam, thiab muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) kom ua raws li cov qauv thoob ntiaj teb. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.