1.4539 Stainless hlau yog dab tsi?
Jan 13, 2026
Tso lus
1.4539 stainless hlau, dav lub npe hu ua 904L los yog UNS N08904, yog siab- alloy, qis- carbon austenitic stainless hlau. Distinguished los ntawm nws cov high chromium, npib tsib xee, molybdenum, thiab tooj liab cov ntsiab lus, nws muab tshwj xeeb tsis kam mus rau ib tug ntau yam ntawm corrosive xov xwm, tshwj xeeb tshaj yog sulfuric acid. Qhov no ua rau nws yog cov khoom siv zoo tshaj plaws rau cov ntawv thov tseem ceeb hauv kev ua tshuaj lom neeg, tshuaj, thiab kev tswj cov pa phem.
Qib hwm 1.4539 yog tus qauv raws li ntau qhov kev xaiv.
| Txuj | Qib sib npaug |
|---|---|
| EN (Tebchaws Europe) | 1.4539 |
| ASTM / AISI (USA) | 904 L, UA N08904 |
| JIS (Nyiv) | SUS 904 L |
Nws qhov kev ua tau zoo tshaj plaws yog muab los ntawm kev ua tib zoo sib npaug, siab -alloy chemistry.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
|---|---|---|---|---|---|---|---|---|---|
| Cov ntsiab lus (%) | Tsawg dua lossis sib npaug li 0.02 | Tsawg dua los yog sib npaug rau 1.0 | Tsawg dua los yog sib npaug rau 2.0 | Tsawg dua lossis sib npaug li 0.045 | Tsawg dua lossis sib npaug li 0.035 | 19.0 - 23.0 | 23.0 - 28.0 | 4.0 - 5.0 | 1.0 - 2.0 |
Nws muaj cov khoom zoo txhua yam ua ke nrog nws qhov tsis sib xws ntawm corrosion kuj.
| Khoom | Yield zog (Rp0.2) | Tensile zog (Rm) | Elongation (A) | Hardness (HB) |
|---|---|---|---|---|
| Tus nqi | Ntau dua lossis sib npaug li 220 MPa | 490 - 690 MPa | Ntau dua lossis sib npaug li 35% | Tsawg dua lossis sib npaug li 230 |
Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4539 / 904L
Qhov zoo tshaj plaws Corrosion Resistance:Excels nyob rau hauv kev tiv thaiv zoo corrosion los ntawm sulfuric, phosphoric, thiab acetic acids, thiab muaj kev tiv thaiv zoo heev rau chloride -induced pitting thiab crevice corrosion.
High Alloy Cov ntsiab lus:Cov nqi tseem ceeb ntawm npib tsib xee, chromium, molybdenum, thiab tooj liab ua haujlwm sib koom ua ke los tuav ob qho tib si oxidizing thiab txo qhov chaw.
Tsawg Carbon & Zoo Weldability:Cov ntsiab lus tsis tshua muaj carbon tsawg txo cov nag lossis daus carbide, thiab nws tuaj yeem welded siv cov txheej txheem sib xws nrog cov khoom siv siab - alloy muab tub lim.
Cov ntawv thov tseem ceeb:
Kev ua tshuaj lom neeg:Reactors, tso tsheb hlau luam, thiab kav dej rau tsim thiab tuav sulfuric acid thiab lwm yam tshuaj lom neeg.
Pollution Control:Scrubbers, ducting, thiab chimney liners hauv flue gas desulfurization (FGD) cov nroj tsuag.
Pharmaceutical:Cov khoom siv uas xav tau siab purity thiab tsis kam mus rau cov tshuaj ntxuav.
Kev siv dej hiav txwv:Thaum tshav kub kub exchangers thiab kav dej nyob qhov twg yuav tsum tau tiv thaiv dej brackish los yog seawater.
Dab tsi ua rau 904L (1.4539) txawv ntawm thiab zoo dua rau 316L (1.4404)?
Qhov sib txawv tseem ceeb yog qhov ntau dua tag nrho cov ntsiab lus alloy thiab qhov sib ntxiv ntawm tooj liab . 904L muaj ntau cov chromium, npib tsib xee, thiab molybdenum ntau dua li 316L, thiab nws cov ntsiab lus tooj liab 1-2% ua rau nws muaj kev tiv thaiv kom tsis txhob muaj cov kua qaub xws li sulfuric acid. Qhov no ua rau 904L haum rau cov cheeb tsam tshuaj lom neeg hnyav uas 316L yuav nrawm nrawm. Nws Pitting Resistance Equivalent Number (PREN) kuj tseem muaj ntau dua.
Puas yog 1.4539 (904L) stainless hlau nyuaj rau tshuab lossis daim ntawv?
Vim nws qhov kev ua haujlwm siab thiab tawv tawv, 904L tuaj yeem nyuaj rau lub tshuab thiab daim ntawv ntau dua li cov qib austenitic zoo li 304 lossis 316. Nws yuav tsum muaj cov tshuab muaj zog, kev teeb tsa nruj, cov cuab yeej txiav ntse, thiab qhov tsim nyog nrawm thiab txau. Rau kev tsim, nws yuav xav tau ntau zog thiab ua tib zoo saib rau springback. Txawm li cas los xij, nrog cov txheej txheem thiab cov cuab yeej raug, nws tuaj yeem ua tiav tiav.
Nrhiav rau tus neeg muab kev ntseeg siab ntawm 1.4539 / 904L Stainless Hlau?
GNEE Steel cov khoom lag luam thiab cov khoom siv siab -kev ua tau zoo 904L (1.4539) stainless hlau hauv phaj, yeeb nkab, thiab cov ntaub ntawv haum kom tau raws li qhov xav tau ntawm cov ntawv thov corrosive tshaj plaws. Peb cov ntaub ntawv tuaj nrog tag nrho traceability thiab ntawv pov thawj. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.
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