254smo, S31803 Plate Chaw tsim tshuaj paus, tus neeg muag khoom, tiv tauj peb rau kev tsocai pub dawb thiab qauv!
254 SMO (super austenitic stainless hlau) thiab S31803 (duplex stainless hlau) yog ob qho khoom siv tseem ceeb rau kev cuam tshuam nrog corrosive ib puag ncig hauv kev lag luam, tab sis muaj qhov sib txawv tseem ceeb hauv lawv cov qauv tsim, kev ua tau zoo thiab kev siv cov xwm txheej. HT PIPE is aastm a240 uns s31803 phajtus xa khoom nrog 15+ kev xa tawm.Tiv tauj pebkom paub ntau ntxiv thiab quotes dawb!
Cov tshuaj muaj pes tsawg leeg thiab alloy tsim ntawm Alloy 254smo thiab alloy S31803 Phaj
| Element | 254 SMO (UNS S31254) | S31803 (Dubplex 2205) |
| Chromium (Cr) | 19.5 - 20.5% | 21.0 - 23.0% |
| Nickel (Ni) | 17.5 - 18.5% | 4.5 - 6.5% |
| Molybdenum (hli) | 6.0 - 6.5% | 2.5 - 3.5% |
| Nitrogen (N) | 0.18 - 0.22% | 0.08 - 0.20% |
Mechanical zog thiab lub cev muaj zog
Lub zog thiab toughness ntawm Stainless hlau S31254 thiab s31803 phaj
254 TSI:yield zog Ntau tshaj los yog sib npaug rau 310 MPa, tensile zog Ntau tshaj los yog sib npaug rau 650 MPa, elongation Ntau tshaj los yog sib npaug rau 35%. Nws lub zog yog 1.5 npaug ntawm cov tsoos austenitic stainless hlau (xws li 316L), tab sis qis dua cov hlau duplex. Nws muaj kev ruaj ntseg kub zoo heev thiab tuaj yeem tswj kev ua haujlwm ruaj khov hauv qab 600 degree.
S31803: yield zog Ntau tshaj los yog sib npaug rau 450 MPa, tensile zog Ntau tshaj los yog sib npaug rau 620 MPa, elongation Ntau tshaj los yog sib npaug rau 25%. Lub dual-theem qauv muab nws lub zog tawm los ntau dua, tab sis tsis zoo tsawg-kub toughness thiab nws nquag embrittlement ze 475℃.
Thermophysical zog ntawm 254smo stainless thiab s31803 phaj
254 SIB(16.5 × 10⁻⁶ /℃) yog siab dua S31803 (13.7 × 10⁻⁶ / degree), thiab yuav tsum muaj kev tswj kom nruj thermal kev nyuab siab thaum vuam.
S31803 thermal conductivity (15 W / m·K) zoo dua 254 SMO (14.2 W / m·K), haum rau cov khoom siv hluav taws xob sib pauv.
Corrosion kuj sib piv ntawm 254smo alloy thiab S31803 alloy
Uniform corrosion ntawm s31254 thiab s31803
254 TSI:Kev ua tau zoo hauv kev txo cov kua qaub (xws li hydrochloric acid, sulfuric acid) thiab cov chloride ion ib puag ncig siab (xws li dej hiav txwv), tshwj xeeb tshaj yog nyob rau hauv seawater desalination siab - cov kav dej siab (6.9 MPa) nrog tus nqi corrosion tsawg li 0.005 mm / xyoo.
S31803: Nws muaj zog tiv thaiv sulfide stress corrosion cracking (SSC) nyob rau hauv cov roj thiab roj ib puag ncig uas muaj hydrogen sulfide (H₂S), tab sis tsis muaj zog corrosion kuj rau hydrochloric acid thiab sulfuric acid.
Pitting thiab crevice corrosion ntawm super duplex 2205 thiab s31254 daim ntawv
Qhov tseem ceeb pitting kub (CPT) ntawm 254 SMO yog 20-30℃siab dua li ntawm S31803, thiab nws cov kev pab cuam lub neej yuav ncav cuag 30 xyoo nyob rau hauv 7% salinity seawater.
Kev ntxhov siab corrosion cracking (SCC) ntawm s31254 thiab s31803
S31803 muaj kev tiv thaiv zoo dua rau SCC dua li cov hlau austenitic zoo tib yam vim nws cov qauv dual -theem, tab sis tseem tsis muaj zog dua li 254 SMO.
Weldability ntawm super duplex s31254 thiab duplex s31803
254 TSI:Cov txheej txheem hluav taws xob qis qis (xws li GTAW) yuav tsum tau, vuam tam sim no yog tswj ntawm 80-125A, interlayer kub tsawg dua lossis sib npaug li 95 degree, thiab ER NiCrMo-3 vuam cov khoom siv. Kev tiv thaiv roj nruj (98% Ar+2%N₂) yuav tsum tau ua kom tsis txhob muaj oxidation thiab thermal tawg.
S31803:TIG, MIG thiab phau ntawv arc vuam siv tau, thiab 329J3L vuam cov khoom raug pom zoo. Austenite-ferrite theem tshuav nyiaj li cas yuav tsum tau khaws cia thaum lub sij hawm vuam, thiab tsis tas yuav tsum tau kho cua sov tom qab vuam.
Kev ua tiav ntawm 254smo thiab 2205 phaj
254 TSI:Qhov txias ua hauj lwm hardening tus nqi yog siab, thiab ntau yam me me deformation txheej txheem thiab intermediate annealing (khoom tov kho ntawm 1000-1050 degree) yuav tsum tau.
S31803: Qhov kub ua haujlwm kub yog nqaim (1150-950 degree), thiab txias yuav tsum ceev kom tsis txhob σ theem nag lossis daus. Thaum lub sijhawm ua haujlwm txias, kev saib xyuas yuav tsum tau them rau qhov tsis txaus ductility tshwm sim los ntawm kev ua haujlwm siab zog.
FAQ
Q: Puas yog 254SMO zoo dua rau cov dej hiav txwv?
A: Yog. Tshaj 30 degree, S31803 tuaj yeem pit. 254SMO nyob twj ywm ntawm qhov kub siab dua.
Q: Vim li cas 254SMO kim dua?
A: Nws muaj 18% Nickel thiab 6% Moly- yuav luag ob npaug ntawm cov ntsiab lus ntawm S31803.
Q: Qhov twg yog qhov muaj zog dua?
A: S31803.Nws cov qauv duplex muab lub zog ntau dua, tso cai rau cov phaj nyias nyias.
Q: Kuv puas tuaj yeem txuas lawv ua ke?
A: Yog. Sivalloy 625muab tub lim kom muaj kev tiv thaiv corrosion ntawm qhov sib koom ua ke.
