1.4436 Stainless hlau yog dab tsi?

1.4436 stainless hlau, feem ntau hu ua 316 los yog UNS S31600, yog molybdenum-alloyed austenitic stainless hlau uas muaj superior corrosion kuj piv rau 304, tshwj xeeb tshaj yog nyob rau hauv chloride- muaj ib puag ncig. Qhov sib ntxiv ntawm 2.5-3.0% molybdenum ho txhim kho nws cov kev tiv thaiv rau pitting thiab crevice corrosion, ua rau nws tus qauv xaiv rau cov ntawv thov uas raug rau chlorides, muaj tshuaj lom neeg, los yog saline ib puag ncig. Cov qib no muaj cov ntsiab lus molybdenum ntau dua li tus qauv 316, muab kev txhim kho corrosion rau cov ntawv thov.

 

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

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4436
ASTM / AISI (USA)	316, UA S31600
JIS (Nyiv)	SUS 316
KS (Korea)	STS 316
Lub Npe	316

Cov ntsiab lus molybdenum siab dua yog cov yam ntxwv tseem ceeb uas muab kev txhim kho corrosion kuj.

Lub ntsiab	C	Si	Mn	P	S	Cr	Ni	Mo
Cov ntsiab lus (%)	Tsawg dua lossis sib npaug li 0.07	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua lossis sib npaug li 2.0	Tsawg dua lossis sib npaug li 0.045	Tsawg dua los yog sib npaug li 0.03	16.5 - 18.5	10.5 - 13.0	2.5 - 3.0

Nws muaj lub zog zoo thiab zoo heev ductility, feem ntau ntawm austenitic stainless hlau.

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)
Tus nqi	Ntau dua lossis sib npaug li 205 MPa	500 - 700 MPa	Ntau dua lossis sib npaug li 40%	Tsawg dua lossis sib npaug li 215

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4436 / 316

Superior Corrosion Resistance:Cov ntsiab lus molybdenum siab dua (2.5-3.0%) muab kev tiv thaiv zoo dua rau pitting thiab crevice corrosion hauv chloride-muaj ib puag ncig (xws li dej hiav txwv, de-icing ntsev, brine) piv rau tus qauv 316 nrog qis molybdenum (2.0-2.5%).

Zoo Acid Resistance:Muab kev txhim kho kev tiv thaiv rau ntau cov kua qaub, suav nrog sulfuric, phosphoric, thiab acetic acids, ua rau nws tsim nyog rau kev siv tshuaj lom neeg.

Zoo heev Formability thiab Weldability:Tuav cov txheej txheem zoo thiab vuam cov yam ntxwv ntawm austenitic stainless hlau, txawm hais tias 316L yog qhov nyiam rau qhov hnyav welded seem.

Zoo heev Toughness:Ua kom muaj kev cuam tshuam zoo heev rau qhov kub thiab txias, haum rau kev siv qis - kub.

 

Cov ntawv thov tseem ceeb:

Marine & Coastal:Nkoj fittings, underwater Cheebtsam, offshore platforms, thiab architectural cladding nyob rau hauv ntsev -laden atmospheres.

Kev ua tshuaj lom neeg:Tank, kav dej, li qub, twj tso kua mis, thiab reactors los tuav cov tshuaj corrosive.

Pharmaceutical & Khoom noj khoom haus:Cov cuab yeej xav tau kev ua kom huv siab, ua kom tsis muaj menyuam, thiab tiv thaiv cov tshuaj ntxuav.

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

Desalination:Cheebtsam hauv seawater desalination nroj tsuag.

Kev Lag Luam Textile:Dyeing thiab xov khoom siv.

 

1.4436 txawv ntawm 316 qib zoo li 1.4401 li cas?
Qhov sib txawv tseem ceeb nyob hauv cov ntsiab lus molybdenum . 1.4436 muaj ntau dua molybdenum (2.5-3.0%) piv rau 1.4401 (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 1.4436 tshwj xeeb tshaj yog tsim rau cov kev siv marine thiab tshuaj lom neeg ntau dua. Cov ntsiab lus npib tsib xee kuj tseem me ntsis siab dua (10.5-13.0% vs. 10.0-13.0%). 1.4436 feem ntau tau teev tseg rau cov ntawv thov offshore, marine, thiab desalination qhov siab tshaj plaws corrosion kuj yuav tsum tau. Rau cov qauv siv nrog cov tshuaj chloride tsawg, 1.4401 feem ntau yog txaus.

 

Qhov txiaj ntsig tseem ceeb ntawm 316 (1.4436) tshaj 304 (1.4301) yog dab tsi?
Qhov txiaj ntsig tseem ceeb yog qhov sib ntxiv ntawm 2.5-3.0% molybdenum, uas ua rau muaj kev tiv thaiv zoo rau hauv zos corrosion-tshwj xeeb tshaj yog pitting thiab crevice corrosion- nyob rau hauv ib puag ncig uas muaj chloride ions. Qhov no ua rau 316 qhov kev xaiv zoo tshaj plaws rau cov ntawv thov nyob rau hauv ib puag ncig marine, thaj chaw ntug hiav txwv, cov chaw tsim tshuaj siv tshuaj chlorides, thiab nyob txhua qhov chaw raug ntsev, brine, de-icing ntsev, los yog halogen compounds yuav tsum tau ua kom muaj zog ntawm qhov kub thiab txias thiab zoo dua los txo cov kua qaub. Thaum 304 yog qhov tsim nyog rau kev siv lub hom phiaj dav dav, 316 muab kev pabcuam txuas ntxiv rau hauv cov xwm txheej hnyav dua.

 

Dab tsi yog qhov kev txiav txim siab vuam rau 1.4436?
316 muaj qhov zoo weldability siv txhua txoj hauv kev xws li TIG, MIG, SMAW, thiab SAW. Cov ntsiab lus tseem ceeb suav nrog:

Muab cov hlau sib txuam (ER316 rau TIG / MIG, E316-16 rau SMAW) raug pom zoo

Rau qhov hnyav welded seem lossis daim ntawv thov uas xav tau qhov siab tshaj plaws corrosion kuj, 316L muab tub lim yuav nyiam dua

Tsawg carbon versions (316L) tshem tawm qhov kev pheej hmoo ntawm kev puas tsuaj yam tsis muaj kev tshaj tawm -weld heat treatment

Pom zoo cua sov input: 0.5-2.0 kJ / mm

Interpass kub yuav tsum khaws cia qis dua 150 degree

Tshaj tawm -welding tu thiab pickling / passivation yog pom zoo rau qhov zoo tshaj plaws corrosion kuj

 

Nrhiav rau kev ntseeg siab ntawm 1.4436 / 316 Stainless Hlau?
GNEE Steel muab hwm 316 (1.4436) stainless hlau nyob rau hauv tag nrho cov qauv qauv - phaj, ntawv, kauj, yeeb nkab, bar, hlau, thiab fittings - haum rau corrosive ib puag ncig. Cov qib no muaj cov ntsiab lus molybdenum ntau dua rau kev txhim kho corrosion kuj. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab cov kev pabcuam ua tiav nrog rau kev txiav, khoov, sib sau, thiab ua tiav. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.