1.4432 Stainless hlau yog dab tsi?

1.4432 stainless hlau, feem ntau hu ua 316L lossis UNS S31603, yog qhov qis -carbon variant ntawm tus qauv 316 molybdenum-alloyed austenitic stainless hlau. Nws txo cov ntsiab lus ntawm cov pa roj carbon monoxide ua kom muaj kev tiv thaiv rau intergranular corrosion nyob rau hauv raws li -welded mob, ua rau nws nyiam xaiv rau hnyav welded fabrications, tshuaj ua khoom siv, kws tshuaj, thiab marine daim ntaub ntawv uas ob qho tib si corrosion kuj thiab weld kev ncaj ncees yog ib qho tseem ceeb. Raws li ib qho ntawm ntau yam thiab dav siv stainless hlau, nws muaj qhov sib npaug zoo ntawm corrosion kuj, formability, thiab weldability.

 

Qhov qis -carbon molybdenum- qib kev txhim kho no yog tus qauv hauv txhua lub tshuab thoob ntiaj teb loj.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4432
ASTM / AISI (USA)	316L, UA S31603
JIS (Nyiv)	SUS 316L
KS (Korea)	STS 316L
Lub Npe	316L

Cov ntsiab lus qis carbon (≤0.03%) thiab molybdenum ntxiv (2.5-3.0%) muab kev txhim kho corrosion.

Element	C	Si	Mn	P	S	Cr	Ni	Mo
Cov ntsiab lus (%)	≤ 0.03	≤ 1.0	≤ 2.0	≤ 0.045	≤ 0.03	16.5 - 18.5	10.5 - 13.0	2.5 - 3.0

Nws muaj lub zog zoo thiab zoo ductility, zoo ib yam li tus qauv 316.

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)
Tus nqi	≥200 MPa	490 - 690 MPa	≥ 40%	≤ 215

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4432 / 316L

Superior Weldability yam tsis muaj rhiab heev:Cov ntsiab lus tsis tshua muaj carbon (≤0.03%) txo qis chromium carbide tsim thaum lub sij hawm vuam, tiv thaiv intergranular corrosion nyob rau hauv tshav kub- cuam tshuam cheeb tsam yam tsis tas yuav tsum tau tom qab -weld tshav kub kho.

Txhim kho Corrosion Resistance:Cov ntsiab lus molybdenum siab dua (2.5-3.0%) muab kev tiv thaiv zoo dua rau pitting thiab crevice corrosion nyob rau hauv ib puag ncig uas muaj chloride piv rau cov qauv 316L qib nrog qis molybdenum (2.0-2.5%).

Zoo Acid Resistance:Muab kev txhim kho kev ua tau zoo hauv sulfuric, phosphoric, thiab acetic acid ib puag ncig, ua rau nws tsim nyog rau kev siv tshuaj lom neeg.

Zoo heev Formability thiab Toughness:Ua kom zoo ductility thiab cuam tshuam cov yam ntxwv ntawm austenitic stainless hlau, txawm nyob rau hauv qhov kub thiab txias.

 

Cov ntawv thov tseem ceeb:

Tshuaj & Pharmaceutical:Tank, reactors, piping, thiab cov hlab ntsha rau corrosive xov xwm yuav tsum tau siab purity.

Marine & Coastal:Nkoj fittings, offshore platforms, thiab cov khoom uas raug dej hiav txwv los yog ntsev tsuag.

Kev kho mob & Khoom noj khoom haus ua:Cov cuab yeej phais, kev cog qoob loo, thiab cov khoom siv uas yuav tsum tau ua kom tsis muaj menyuam thiab ua kom huv.

Architectural:High -kawg façades, railings, thiab cov qauv nyob rau hauv cov pa phem los yog ntug hiav txwv cua.

Pulp & Ntawv:Cov cuab yeej ua haujlwm hauv cov tshuaj bleaching thiab tshuaj rov qab.

Desalination:Cheebtsam hauv seawater desalination nroj tsuag.

 

1.4432 txawv ntawm 316L qib zoo li 1.4404 li cas?
Qhov sib txawv tseem ceeb nyob hauv cov ntsiab lus molybdenum . 1.4432 muaj ntau dua molybdenum (2.5-3.0%) piv rau 1.4404 (2.0-2.5%). Cov ntsiab lus molybdenum siab dua no muab kev tiv thaiv zoo rau pitting thiab crevice corrosion nyob rau hauv ib puag ncig chloride, ua rau 1.4432 tshwj xeeb tshaj yog tsim rau cov kev siv marine thiab tshuaj lom neeg ntau dua. Cov ntsiab lus nickel kuj me ntsis siab dua (10.5-13.0% vs . 10.0-13.0%). Rau feem ntau daim ntawv thov, cov qhab nia no sib hloov tau, tab sis 1.4432 muaj qhov ua tau zoo nyob rau hauv qhov chaw muaj tshuaj chloride hnyav . 1.4432 feem ntau tau teev tseg rau cov ntawv thov offshore, marine, thiab desalination qhov twg yuav tsum muaj kev tiv thaiv corrosion ntau tshaj.

 

Thaum twg kuv yuav tsum xaiv 316L nrog cov ntsiab lus molybdenum siab dua li 1.4432?
Xaiv 1.4432 thaum daim ntawv thov cuam tshuam nrog cov tshuaj chloride hnyav dua, xws li:

Cov khoom siv tuav dej hiav txwv hauv cov huab cua sov

Offshore platform Cheebtsam hauv thaj chaw txaws

Kev ua tshuaj lom neeg nrog cov tshuaj chloride ntau dua

Pulp thiab ntawv bleaching khoom

Desalination cog Cheebtsam

Cov ntawv thov uas muaj kev nyab xeeb xav tau ntau dua corrosion kuj margins

Cov Cheebtsam uas yuav raug welded thiab tsis tuaj yeem tshaj tawm -weld kub kho

Rau cov qauv kev siv nrog cov tshuaj chloride nruab nrab, 1.4404 feem ntau yog txaus thiab pheej yig dua.

 

 

Dab tsi yog qhov kev txiav txim siab vuam rau 1.4432?
1.4432 muaj qhov zoo tshaj plaws weldability siv txhua txoj hauv kev xws li TIG, MIG, SMAW, thiab SAW. Muab cov hlau sib xyaw ua ke (ER316L rau TIG/MIG, E316L-16 rau SMAW) raug pom zoo kom muaj kev tiv thaiv corrosion. Cov ntsiab lus tsis tshua muaj carbon tshem tawm qhov xav tau rau kev tshaj tawm -weld kho cua sov, txawm rau cov ntu tuab. Kev pom zoo cua sov yog feem ntau 0.5-2.0 kJ / mm, nrog rau qhov kub thiab txias hauv qab 150 ° C. Shielding gas (argon los yog argon nrog 2-5% nitrogen) tiv thaiv lub pas dej ua ke. Tom qab vuam tu thiab pickling / passivation raug pom zoo los kho cov txheej txheem passive thiab xyuas kom zoo corrosion kuj.

 

Nrhiav rau tus neeg muab kev ntseeg siab ntawm 1.4432 / 316L Stainless Hlau?
GNEE Steel muab cov khoom zoo - zoo 316L (1.4432) stainless hlau nyob rau hauv tag nrho cov qauv qauv - phaj, ntawv, coil, yeeb nkab, bar, hlau, thiab fittings-nrog rau cov kev pab cuam xws li txiav, dabtsi yog khoov, sib sau, thiab nto finishing. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab xyuas kom cov khoom xa tuaj raws sij hawm rau ob qho tib si Tshuag thiab kev txiav txim. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.