Dab tsi yog 2507 stainless hlau? Tshuaj muaj pes tsawg leeg, khoom, kev siv, thiab nqi.

Dab tsi yog qhov sib npaug stainless hlau rau duplex 2507?

Duplex 2507 belongs rau super duplex stainless hlau tsev neeg, tsim raws li UNS S32750, European tus qauv 1.4410, ASTM forging qib F53, thiab Suav teb chaws tus qauv 022Cr25Ni7Mo4N. Nws cov microstructure tswj qhov sib npaug ~ 1: 1 piv ntawm austenite thiab ferrite, featuring ultra{11}} carbon qis nrog rau siab chromium, siab molybdenum, thiab cov ntsiab lus nitrogen siab, ua tiav PREN Ntau dua lossis sib npaug rau 42. Cov qauv siv tau suav nrog ASTM A2350, ASTM A230, ASTM A240, ASTM A 4237, thiab GB/T 20878. Tsim tshwj xeeb rau siab - chloride, elevated - dej hiav txwv kub, thiab corrosive siab heev - bearing tej yam kev mob, nws cov kev tiv thaiv corrosion yog superior rau cov pa 2205 duplex steel.

 

Duplex 2507 Chemical Composition (wt.% Requirements)

Element	Yam tsawg kawg nkaus (%)	Qhov siab tshaj (%)
Chromium (Cr)	24.00	26.00
Nickel (Ni)	6.00	8.00
Molybdenum (hli)	3.00	4.50
Nitrogen (N)	0.24	0.32
Cov pa roj carbon (C)	-	0.030
Manganese (Mn)	-	1.20
Silicon (Si)	-	0.80
Copper (Cu)	-	0.50
Phosphorus (P)	-	0.035
Sulfur (S)	-	0.020

 

duplex 2507 Mechanical Properties ntawm Chav Kub Kub Tshuaj Annealed

Khoom	Tus nqi
0.2% Pov Thawj Stress (Rp0.2)	Ntau dua lossis sib npaug li 550 MPa
Tensile zog (Rm)	750-1000 MPa
Elongation (A5)	Ntau dua lossis sib npaug rau 15 (Plate) / Ntau dua lossis sib npaug rau 25 (Pib & Bar) %
Brinell Hardness	Tsawg dua lossis sib npaug rau 310 HBW
Rockwell Hardness	Tsawg dua lossis sib npaug li 32 HRC
Charpy V-Txoj kev cuam tshuam lub zog ntawm −40 degree	Ntau dua lossis sib npaug li 80 J

 

duplex 2507 Lub cev thiab Thermal Properties

Khoom	Mob / Kub	Tus nqi
Qhov ntom	20 degree	7.8 g / cm³
Modulus ntawm Elasticity (E)	20 degree	200 GPa
Thermal conductivity	20 degree	15 W/m·K
Tshwj xeeb kub muaj peev xwm	20 degree	500 J/kg · K
Hluav taws xob Resistivity	20 degree	0.80 Ω·mm² / m
Coefficient ntawm Thermal Expansion	20-100 degree	13.5 × 10⁻⁶ /K

 

Duplex 2507 Corrosion Resistance thiab Kev Kho Kub Kub Specifications

Parameter	Specification / Tus nqi
Pitting Resistance Equivalent Number (PREN)	Ntau dua lossis sib npaug li 42; PREN=%Cr + 3.3 × %Mo + 16 × %N
Critical Pitting Kub (CPT)	Ntau dua lossis sib npaug li 60 degree, ASTM G48 Txoj Kev A
Critical Crevice Temperature (CCT)	Ntau dua lossis sib npaug li 40 degree, ASTM G48 Txoj Kev B
Stress Corrosion Cracking (SCC) Resistance	Superior kuj nyob rau hauv kub, chloride-cov kabmob thiab H₂S- muaj cov acidic ib puag ncig
Kev kho cua sov	1050-1120 degree
Txoj kev txias	Cov dej nrawm nrawm kom txo qhov kev pheej hmoo ntawm σ-theem nag lossis daus
Microstructure	Austenitic - Ferritic Duplex
Kev kho cua sov	Kev daws Annealed

 

Qhov txawv ntawm 2205 thiab 2507?

Corrosion Resistance: 2507 yog "super" duplex steel nrog tus nqi PREN (Pitting Resistance Equivalent Number) ntau dua 40, qhov 2205 yog kwv yees li 35. Qhov no txhais tau tias 2507 ua tau zoo dua nyob rau hauv siab -chloride ib puag ncig (xws li kev sib sib zog nqus- dej hiav txwv). Lub zog: 2507 muaj zog tawm los ntau dua 2205, tso cai rau kev tsim qauv hnyav. Alloy Cov ntsiab lus: 2507 muaj ntau dua ntawm chromium (25%), molybdenum (4%), thiab nitrogen (0.3%).

 

Puas yog Duplex 2507 sib nqus?

Yog lawm, 2507 yog qhov sib nqus zoo heev vim nws muaj kwv yees li 50% ferrite microstructure. Cov cuab yeej no feem ntau yog siv rau ntawm -qhov chaw kom paub qhov txawv ntawm cov hlau duplex los ntawm 300 series austenitic stainless hlau.

 

Qhov kev pabcuam kub ntawm 2507 yog dab tsi?

Kev txwv qis dua: -50℃(kub hauv qab no tuaj yeem ua rau pob txha tawg). Siab txwv: 250℃- 300℃. Kev raug ncua ntev tshaj 300℃ua rau "475℃embrittlement" tshwm sim, yog li nws tsis pom zoo rau cov hlab ntsha kub siab.

 

Kev siv ntawm 2507 Stainless Hlau

Desalination khoom, tag nrho submerged seawater piping, seawater heat exchangers; cov kav dej qaub thiab cov hlab ntsha siab hauv kev lag luam roj thiab roj; chemical siab -chloride reactors, tshav kub exchangers, twj, li qub, thiab flanges; flue gas desulfurization (FGD) systems hauv fais fab nroj tsuag; pulp bleaching systems; cov khoom siv hluav taws xob hauv av thiab cov khoom siv sab nrauv sab nrauv; siab -lub zog corrosion- tiv taus fasteners thiab tov khoom impellers. Tsis haum rau cov concentrated hydrochloric acid lossis muaj zog txo cov kua qaub; Tsis tas li ntawd yuav tsum tsis txhob muaj qhov kub siab tshaj 250 degree.

 

Tus nqi ntawm 2507 stainless hlau yog dab tsi?

2026 cov nqi siv rau kev daws teeb meem-annealed 2507 stainless hlau (cov se suav nrog): Kub- dov nruab nrab / hnyav daim hlau: 60-70 RMB / kg; Txias-cov ntawv yob: 64–76 RMB/kg; Round tuav: 62-72 RMB / kg; Seamless kav: 78-98 RMB / kg; Custom cut-rau-ntev thiab me-batch xaj nqa 15-25% ntxiv; thawj cov khoom siv zeb tuaj yeem raug nqi siab dua. Cov nqi hloov pauv raws li nickel thiab molybdenum raw khoom tiam sis, specifications, nto tiav, NDT yuav tsum, thiab xaj ntim. Cov duab saum toj no tsuas yog siv rau kev siv xwb; tus nqi tiag tiag yog nyob ntawm cov lus hais txhua hnub.

 

Kev Ruaj Ntseg & Txais Cov Ntsiab Tshuaj Ntsuam Xyuas rau 2507

Substandard Material Risks:Tsis yog- cov qauv alloys uas tsis muaj Cr, Mo, lossis N cov ntsiab lus dhau los ua 2507 tiag, ua rau tsis txaus PREN qhov tseem ceeb thiab ceev pitting / perforation hauv seawater service.

Thermal Processing Defects:Kev kho cov tshuaj tsis txaus ua rau ob-theem tsis sib xws thiab sigma ($\\sigma$) theem nag lossis daus, ua rau poob ntawm kev cuam tshuam toughness thiab corrosion tsis ua haujlwm.

Vuam yuam kev:Kev siv tsis raug ntawm 2209 muab tub lim xaim lossis siab tshaj qhov siab tshaj qhov sib cuam tshuam, ua rau lub sijhawm ntxov weld corrosion thiab tawg.

Kev lees paub raws tu qauv:Txheeb xyuas PMI spectral chemistry, ferrite cov ntsiab lus, cov khoom siv kho tshuab, thiab lub zog cuam tshuam; ua ASTM A923 kuaj rau siab-cov kabmob; xav tau daim ntawv pov thawj MTC cov ntaub ntawv pov thawj.

 

GNEE 2507 Stainless Steel Supply Capabilities

GNEE tuav cov khoom lag luam zoo ntawm 2507 txias- cov ntawv dov, kub- dov daim hlau, puag ncig tuav, forgings, seamless kav, thiab flange blanks. Peb txhawb kev txiav kev txiav - mus rau - qhov loj me, sawing, precision sib tsoo, thiab kev kho cua sov. Peb ua ultrasonic kuaj (UT) thiab muab cov ntaub ntawv ua tiav cov tshuaj spectrum, mechanical, thiab cov ntaub ntawv xeem cov ntaub ntawv, haum rau ob qho tib si qauv thov thiab ntau lawm txiav txim.

Yog tias koj xav tau kev pab nrog kev yuav khoom lossis xaiv cov khoom,
thov qhia cov khoom uas yuav tsum tau ua (pav ca, phaj, lossis yeeb nkab),
tshwj xeeb qhov ntev thiab specifications,
thiab lub hom phiaj kev lag luam lossis daim ntawv thov scenario.

Hu rau tam sim no

FAQ

2507 thiab UNS S32760 (Zeron 100) puas tuaj yeem siv sib hloov?

Both belong to the super duplex steel family, with PREN values >40. Qhov sib txawv tseem ceeb yog S32760 muaj cov khoom tshwj xeeb ntawm tungsten (W) thiab tooj liab (Cu). Lawv tuaj yeem siv sib hloov hauv feem ntau qhov chaw corrosive, tab sis hauv qee cov txheej txheem muaj zog acid, cov ntaub ntawv xov xwm tshwj xeeb yuav tsum tau sab laj.

 

CPT ntawm Duplex 2507 yog dab tsi?

Hauv 6% FeCl₃ kev tshuaj ntsuam xyuas, CPT ntawm 2507 feem ntau yog siab dua 50℃- 60℃. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau seawater txias tshuab, desalination, thiab kev lag luam chemical.

 

Dab tsi welding muab tub lim hlau raug pom zoo rau vuam 2507?

A: 2509 muab tub lim hlau (xws li ER2594) feem ntau pom zoo. Lawv cov ntsiab lus npib tsib xee feem ntau yog me ntsis siab dua li ntawm cov hlau puag (kwv yees li 2-3% siab dua) kom them nyiaj rau kev tsim cov austenite hauv thaj tsam weld thiab xyuas kom muaj theem sib npaug.