1.4507 Stainless hlau yog dab tsi?

1.4507 stainless hlau, feem ntau hu ua 2507 HD (High Duplex) los yog UNS S32707, yog super duplex stainless hlau nrog kev sib npaug ntawm ferritic thiab austenitic theem. Nws muaj lub zog ntau dua thiab kev tiv thaiv corrosion ntau dua li tus qauv 2507, tshwj xeeb tshaj yog nyob rau hauv qhov hnyav heev chloride thiab acidic ib puag ncig, ua rau nws zoo tagnrho rau kev thov rau offshore, tshuaj, thiab subsea daim ntaub ntawv.

 

Qhov kev txhim kho super duplex qib no yog tus qauv raws li cov npe tseem ceeb thoob ntiaj teb.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4507
ASTM / AISI (USA)	2507 HD, UNS S32707
Lub Npe	2507 HD ua

Nws muaj pes tsawg leeg suav nrog ntau dua chromium, molybdenum, thiab nitrogen rau kev ua tau zoo dua.

Element	C	Si	Mn	P	S	Cr	Ni	Mo	N
Cov ntsiab lus (%)	≤ 0.03	≤ 0.80	≤ 1.2	≤ 0.035	≤ 0.02	24.0 - 26.0	6.0 - 8.0	3.0 - 4.5	0.24 - 0.32

Nws muab lub zog loj thiab zoo heev toughness txawm nyob rau hauv hnyav tej yam kev mob.

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)	Kev cuam tshuam (J)
Tus nqi	≥550 MPa	750 - 1000 MPa	≥ 25%	≤ 310	≥80 (20 ° C)

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4507 / 2507 HD

Exceptional Corrosion Resistance:Muaj tus lej siab Pitting Resistance sib npaug (PREN> 40), muab kev tiv thaiv zoo tshaj rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg nyob rau hauv aggressive chloride thiab acidic ib puag ncig.

Muaj zog heev:Nws cov qauv duplex muab cov txiaj ntsig siab heev thiab lub zog tensile, ua kom sib zog thiab tus nqi ntau dua - tsim kom muaj txiaj ntsig zoo rau siab - muaj cov khoom.

Zoo Erosion thiab hnav tsis kam:Cov theem ferritic pab txhawb kom muaj kev tiv thaiv zoo tiv thaiv kev yaig-corrosion thiab abrasive hnav.

 

Cov ntawv thov tseem ceeb:

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

Kev ua tshuaj lom neeg:Reactors, kub exchangers, thiab piping rau corrosive acids thiab chlorides heev.

Desalination & FGD Nroj Tsuag:High -siab RO membranes, evaporator tubes, thiab scrubber systems.

Pulp & Ntawv Kev Lag Luam:Digesters thiab bleaching khoom.

 

2507 HD (1.4507) txawv ntawm tus qauv Super Duplex 2507 (1.4410) li cas?
2507 HD yog ib qho kev hloov kho tshiab nrog kev tswj xyuas nruj dua thiab cov ntsiab lus siab dua me ntsis, muab kev tiv thaiv corrosion zoo dua thiab cov khoom siv kho tshuab. Nws feem ntau tau teev tseg rau qhov kev pabcuam hnyav tshaj plaws uas tus qauv 2507 tuaj yeem ua rau nws cov kev txwv, tshwj xeeb tshaj yog nyob rau hauv cov ntsiab lus ntawm pitting thiab crevice corrosion kuj ntawm qhov kub siab.

 

Dab tsi yog qhov tseem ceeb rau kev vuam 2507 HD stainless hlau?
Vuam 2507 HD yuav tsum muaj kev tswj xyuas nruj kom tswj tau qhov zoo tshaj plaws 50/50 ferrite-austenite tshuav nyiaj li cas hauv cov hlau vuam thiab cua sov- thaj chaw cuam tshuam (HAZ). Cov kev coj ua tseem ceeb suav nrog kev siv ntau tshaj -alloyed muab tub lim hlau (xws li, 25.10.4.L), kev tswj xyuas cov cua sov kom tsis txhob muaj cov ferrite ntau dhau los yog nag lossis daus ntawm nkig intermetallic theem, thiab xyuas kom muaj cov pa tiv thaiv txaus (feem ntau Ar + 30% N2) kom tswj cov qib nitrogen. Tom qab-weld cooling rates yuav tsum tau tswj, thiab cov khoom yuav tsum tsis txhob tuav nyob rau hauv qhov kub thiab txias (kwv yees . 600-1000°C) rau ncua sij hawm.

 

Nrhiav kev ntseeg siab ntawm 1.4507 / 2507 HD Stainless Hlau?
GNEE Steel muab cov khoom lag luam zoo tshaj plaws super duplex 2507 HD (1.4507) stainless hlau hauv phaj, yeeb nkab, fittings, thiab bar cov ntaub ntawv rau qhov nyuaj tshaj plaws corrosive thiab siab - kev siv siab. 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.