1.4537 Stainless hlau yog dab tsi?

1.4537 stainless hlau, feem ntau hu ua Alloy 27-7Mo lossis UNS S31277, yog super austenitic stainless hlau nrog tshwj xeeb siab molybdenum thiab nitrogen cov ntsiab lus. Nws muaj kev tiv thaiv zoo rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg hauv chloride ib puag ncig, ua rau nws zoo tagnrho rau kev thov hauv seawater desalination, offshore, tshuaj ua haujlwm, thiab kev tswj kev lag luam.

 

Qhov siab -kev ua tau zoo super austenitic qib no yog tus qauv raws li cov qauv tseem ceeb thoob ntiaj teb.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4537
ASTM / AISI (USA)	Alloy 27-7Mo, UNS S31277
Lub Npe	Alloy 27-7Mo, S31277

Nws cov ntsiab lus siab alloy, tshwj xeeb tshaj yog molybdenum thiab nitrogen, yog qhov tseem ceeb rau nws cov corrosion kuj.

Element	C	Si	Mn	P	S	Cr	Ni	Mo	N
Cov ntsiab lus (%)	≤ 0.02	≤ 0.8	≤ 1.0	≤ 0.03	≤ 0.01	20.0 - 22.0	26.0 - 28.0	6.5 - 8.0	0.30 - 0.40

Nws combines lub zog siab nrog zoo heev ductility thiab corrosion kuj.

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)
Tus nqi	≥350 MPa	700 - 900 MPa	≥ 35%	≤ 260

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4537 / Alloy 27-7Mo

Exceptional Pitting thiab Crevice Corrosion Resistance:Nrog rau PREN (Pitting Resistance Equivalent Number)> 45, nws muaj kev tiv thaiv zoo tshaj hauv cov tshuaj chloride ib puag ncig, suav nrog cov dej hiav txwv kub thiab cov tshuaj hypochlorite.

Zoo heev Stress Corrosion Cracking (SCC) Resistance:Ua tau zoo nyob rau hauv tensile kev nyuaj siab nyob rau hauv corrosive ib puag ncig uas lwm yam austenitic qib yuav poob.

Siab zog thiab zoo formability:Muab cov khoom muaj zog ntau dua li cov qib qib austenitic thaum tswj xyuas qhov zoo ductility thiab weldability.

 

Cov ntawv thov tseem ceeb:

Seawater Desalination:Rov qab osmosis (RO) daim nyias nyias, siab - cov kav dej siab, thiab cov raj evaporator.

Offshore & Marine:Thaum tshav kub kub exchangers, twj, valve, thiab subsea Cheebtsam.

Kev ua tshuaj lom neeg:Cov khoom siv los tuav cov kua qaub, chlorides, thiab oxidizing media.

Pollution Control:FGD (Flue Gas Desulfurization) systems thiab scrubbers.

 

Alloy 27-7Mo (1.4537) piv rau 254 SMo (1.4547) li cas?
Ob leeg yog cov qib super austenitic, tab sis Alloy 27-7Mo muaj cov qib molybdenum thiab nitrogen ntau dua, muab PREN siab dua thiab ua haujlwm zoo dua rau pitting thiab crevice corrosion nyob rau hauv qhov hnyav heev chloride ib puag ncig, tshwj xeeb tshaj yog thaum kub siab. Nws tseem muaj zog dua txhua yam. Alloy 27-7Mo feem ntau raug xaiv rau cov ntawv thov hnyav tshaj plaws uas yuav tsum muaj qhov siab tshaj pitting.

 

Dab tsi yog qhov kev txiav txim siab vuam rau Alloy 27-7Mo stainless hlau?
Vuam Alloy 27-7Mo yuav tsum tau ceev faj tswj kom muaj kev tiv thaiv corrosion. Cov kev coj ua uas pom zoo suav nrog kev siv qhov sib txuam lossis ntau dua - cov hlau alloyed muab tub lim (xws li Alloy 625 lossis siab dua-qib austenitic fillers), tswj cov cua sov kom tsis txhob muaj qhov sib txuam ntau dhau, thiab ua kom muaj kev tiv thaiv kom tsis txhob muaj nitrogen. Kev ntxuav tom qab vuam yog qhov tseem ceeb los tiv thaiv corrosion hauv cheeb tsam weld.

 

Nrhiav kev ntseeg siab ntawm 1.4537 / Alloy 27-7Mo Stainless Hlau?
GNEE Steel muab cov khoom zoo tshaj plaws super austenitic Alloy 27-7Mo (1.4537) stainless hlau hauv phaj, yeeb nkab, bar, thiab cov ntaub ntawv haum rau cov kev xav tau tshaj plaws corrosive thiab marine daim ntaub ntawv. Peb muab tag nrho cov ntaub ntawv traceability thiab ntawv pov thawj los xyuas kom meej kev ua tau zoo. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.