Qhov txawv ntawm Stainless Steel 309 thiab SS316 yog dab tsi?

Hauv kev lag luam hlau tsis xeb,309thiab316yog ob qib nrov heev uas feem ntau siv rau hauv kev lag luam thiab kev siv dej hiav txwv uas nyuaj heev. Thaum ob qho tib si muab kev pabcuam zoo heevkev tiv thaiv xebthiablub zog kho tshuab, lawv tau tsim los rau cov xwm txheej kev pabcuam sib txawv. Kev nkag siab txog lawv qhov sib txawv yog qhov tseem ceeb rau cov engineers, fabricators, thiab cov kws tshaj lij kev yuav khoom uas tab tom nrhiav kev ua tau zoo tshaj plaws ntawm tus nqi zoo tshaj plaws.

Hauv phau ntawv qhia ntxaws no los ntawmSAKYSTEEL, ib lub tuam txhab tsim khoom thiab muag khoom hlau stainless thoob ntiaj teb uas ntseeg siab, peb yuav piav qhia txogQhov sib txawv tseem ceeb ntawm Stainless Steel 309 thiab SS316, npog lawv cov qauv, microstructure, corrosion tsis kam, kub txwv, thiab cov ntawv thov zoo tagnrho.

1. Kev Taw Qhia Txog Stainless Steel 309

Hlau tsis xeb 309(UNS S30900)yog ib qhoaustenitic kub resistant alloytsim tshwj xeeb raukev pabcuam kub siabNws muaj cov theem siab dua ntawmchromium (23%)thiabnpib tsib xee (13%)dua li 304 lossis 316 stainless hlau, muab nws zoo heev tiv taus oxidation, scaling, thiab carburization ntawm qhov kub siab.

Tsis zoo li ntau lwm qib, 309 tsis yog qhov zoo tshaj plaws rau kev tiv thaiv corrosion hauv dej hiav txwv lossis acidic tab sis rauthermal stability thiab oxidation tsis kamhauv cov cub tawg, cov kilns, thiab cov khoom siv kho cua sov.

Nws cov qauv tseem yog austenitic txawm tias nyob rau hauv qhov kub siab, tswj tau qhov zoo toughness thiab mechanical zog nyob rau hauv cyclic thermal conditions.

2. Kev Taw Qhia Txog Stainless Steel 316

Stainless hlau 316 (UNS S31600)yog ib qho ntawm cov khoom siv feem ntau hauv ntiaj tebcov hlau tsis xeb austenitic. Lub npe hu uamarine-grade alloy, nws muaj kev tiv thaiv zoo heev rauchloride corrosion, acids, thiab tshuaj lom neeg tawm tsam.

Qhov tseem ceeb ntawm SS316 yog nws ntxiv cov2–3% molybdenum (Mo), uas ua rau muaj kev tiv thaiv zoo raukev xeb ntawm qhov pitting thiab crevice— tshwj xeeb tshaj yog nyob rau hauv dej ntsev lossis cov chaw muaj chloride ntau.

SS316 yog siv tau ntau yam, weldable, tsis muaj hlau nplaum, thiab tswj tau lub zog thiab ductility thoob plaws ntau yam kub. Nws siv dav hauvkev lag luam tshuaj lom neeg, kev tsim nkoj, zaub mov, thiab kev lag luam tshuaj.

3. Kev Sib Txawv ntawm Cov Tshuaj Lom Zem

Txawm hais tias ob qho tib si yog cov hlau tsis xeb austenitic, lawv cov khoom sib xyaw ua ke txhais lawv tus cwj pwm thiab daim ntawv thov.

  • Cov Hlau Stainless 309 Muaj pes tsawg leeg:

    • Chromium: 22–24%

    • Nickel: 12–15%

    • Molybdenum: ≤0.75%

    • Cov pa roj carbon: ≤0.08%

    • Manganese: ≤2%

    • Silicon: ≤1%

  • Cov Khoom Siv Stainless Hlau 316:

    • Chromium: 16–18%

    • Nickel: 10–14%

    • Molybdenum: 2–3%

    • Cov pa roj carbon: ≤0.08%

    • Manganese: ≤2%

    • Silicon: ≤1%

Kev Nkag Siab Tseem Ceeb:

  • SS309muajchromium thiab nickel ntau duatab sisme me los yog tsis muaj molybdenum, ua rau nws zoo tagnrho rauoxidation thiab kub siab tiv taus.

  • SS316suav nrogmolybdenum, uas ua rau nws zoo duaKev tiv thaiv corrosion ntawm chloride thiab acid, zoo meej rau kev lag luam marine thiab tshuaj lom neeg.

4. Cov qauv me me thiab cov khoom siv hlau

Ob qho tib si SS309 thiab SS316 yogtag nrho austeniticCov hlau tsis xeb nrog lub ntsej muag-centered cubic (FCC) siv lead ua qauv.

Txawm li cas los xij, SS309 cov chromium thiab nickel siab dua ua rau cov qauv ruaj khov ntawm qhov kub siab dua, tiv thaiv kev nkag siab ntawm cov noob qoob loo thiab tswj kev tawv tom qab thermal cycling.

SS316 lub microstructure, txhim kho los ntawm molybdenum, muab ib qhozaj duab xis passive denseruas tiv thaiv kev xeb los ntawm kev khawb thiab chloride - ib yam khoom uas 309 tsis muaj.

5. Cov Khoom Siv Kho Tshuab

Ob qib qhia txog kev ua tau zoo ntawm cov khoom siv kho tshuab, txawm hais tias tau kho kom zoo rau ntau qhov kub thiab txias sib txawv.

Cov khoom siv kho tshuab ib txwm muaj (mob annealed):

  • Lub zog tensile:

    • SS309: 620 MPa

    • SS316: 515 MPa

  • Lub Zog Tawm (0.2% offset):

    • SS309: 310 MPa

    • SS316: 205 MPa

  • Kev ntev:

    • SS309: 40%

    • SS316: 40%

Kev Txhais Lus:
SS309 muajmuaj zog dua thaum kub siab dua, thaum SS316 muajzoo dua ductility thiab corrosion kujnyob rau hauv ntub dej, cov xwm txheej uas muaj chloride.

6. Kev Tiv Thaiv Kev Xeb

6.1 SS316 - Tus yeej ntawm Marine thiab Chemical

SS316 qhov tshwj xeeb tshaj yog nwstsis kam rau chloride pitting thiab crevice corrosion, ua tsaug rau molybdenum. Nws ua tau zoo heev hauv:

  • Kev raug dej hiav txwv

  • Cov nroj tsuag tshuaj lom neeg thiab tshuaj

  • Cov kua qaub xws li acetic, phosphoric, thiab sulfuric (dilute)

Nws covPREN (Tus lej sib npaug ntawm qhov tsis kam rau qhov poob)feem ntau yog 24–26, ua rau nws zoo dua li 309 hauv cov xov xwm corrosive.

6.2 SS309 - Tus Ua Yeeb Yam Uas Tiv Thaiv Kub

SS309 tiv taus oxidation thiab carburization ntawm qhov kub txog li1000–1100°C (1830–2010°F)Nws zoo tagnrho rau:

  • Cov ntaub thaiv qhov cub thiab cov raj radiant

  • Cov khoom siv hloov cua sov

  • Cov khoom siv ua haujlwm thermal

Txawm li cas los xij, 309 yogtsis tshua muaj zog rau chloride corrosionthiabtsis pom zoorau kev raug dej hiav txwv lossis cov huab cua ntsev ntev ntev.

7. Kev Tiv Thaiv Kub

Qhov no yog ib qho ntawm covqhov sib txawv lojnruab nrab ntawm ob qib:

  • SS309:Zoo heev tiv taus oxidation thiab scaling txog li 1100 ° C. Nws khaws cia kev ua haujlwm zoo thiab kev ruaj khov ntawm qhov chaw nyob rau hauv qhov cua sov tas mus li.

  • SS316:Ua tau zoo txog li 870 ° C (1600 ° F), tab sis saum toj ntawd, nws yuav pib loj hlob thiab poob lub zog ntawm cov qauv.

Yog li ntawd,SS309 yog qhov kev xaiv zoo dua rau kev pabcuam kub siab, thaumSS316 zoo tagnrho rau cov xwm txheej xeb ntub thiab tshuaj lom neeg.

8. Kev vuam thiab kev tsim khoom

Ob qho tib si SS309 thiab SS316 yogyooj yim weldablesiv cov txheej txheem txheem xws li TIG, MIG, thiab SMAW.

Txawm li cas los xij, qee cov ntsiab lus tseem ceeb ntawm kev tsim khoom suav nrog:

  • SS309 xav tautswj tau txiastom qab vuam kom tsis txhob muaj carbide precipitation.

  • SS316, ua kom yooj yim dua, yogyooj yim dua los tsim thiab txhuam, ua rau nws nrov rau kev siv vaj tse thiab kho kom zoo nkauj.

Kev ntxuav tom qab vuam thiab passivation raug pom zoo rau ob qho tib si kom rov qab tiv thaiv corrosion.

9. Kev Kho Mob Kub

Ob qib yogtsis khov los ntawm kev kho cua sovthiab raug annealed ntawm 1010–1120 ° C ua raws li kev txias sai.

SS309 tau txais txiaj ntsig los ntawm kev ua kom sov tom qab tsim khoom thaum raug cua sov cyclic, ua kom ntseeg tau tias tshem tawm cov carbides tsis xav tau.

SS316 xav tau kev annealing feem ntau tom qab ua haujlwm txias lossis vuam kom rov qab tau ductility.

10. Cov Khoom Siv Sib Nqus

Ob qho tib si SS309 thiab SS316 yogtsis yog hlau nplaum hauv daim ntawv annealed, txawm hais tias lawv yuav ua rau muaj qhov sib nqus me ntsis tom qab ua haujlwm txias lossis vuam.

Rau cov ntawv thov uas xav tau tus cwj pwm tsis muaj hlau nplaum (xws li cov cuab yeej siv, cov khoom siv zaub mov, lossis cov tshuab cryogenic), ob qho tib si yog qhov tsim nyog, tab sisSS316 yog qhov zoo duavim nws qhov permeability qis dua thiab kev ruaj khov zoo dua.

11. Tus nqi thiab muaj

Tus nqi ntawm kev siv, SS309 feem ntau yogkim dua ib tonvim nws siab duanickel thiab chromiumcov ntsiab lus. Txawm li cas los xij, nws muab kev txuag mus sij hawm ntev hauvcov khoom siv kub siabqhov twg cov hlau tsis xeb ib txwm yuav ua tsis tiav.

SS316 muaj ntau dua thiab siv thoob plaws hauv kev lag luam, ua rau nwsyooj yim dua los nrhiav tau thoob ntiaj tebthiab feem ntau pheej yig dua rau kev tsim khoom loj.

Yog tias qhov chaw ua haujlwm muaj feem cuam tshuam nrogkub tshaj 900 ° C, xaivSS309Yog tias qhov kev sib tw yogkev raug dej ntsev los yog kua qaub, SS316yog tus yeej meej.

12. Cov Ntawv Thov Siv ntawm SS309

  • Cov khoom siv rau lub cub tawg thiab cov pob tawb kho cua sov

  • Cov qhov cub hluav taws thiab cov muffles

  • Cov tshuab tso pa tawm thiab cov qhov cub

  • Cov khoom siv hloov cua sov ua haujlwm ntawm qhov kub siab

  • Cov boilers muaj kev lag luam thiab cov anchors refractory

Hauv ntej, SS309 siv qhov twgtiv taus cua sovnws tseem ceeb dua li kev tiv thaiv corrosion.

13. Cov Ntawv Thov Siv ntawm SS316

  • Cov khoom siv kho vajtse thiab cov khoom siv nkoj

  • Cov khoom siv ua zaub mov

  • Cov tshuab ua tshuaj

  • Cov thoob dej tshuaj thiab cov kav dej

  • Cov qauv vaj tse thiab cov ntaiv tes tuav

  • Cov khoom hloov cua sov thiab cov hlab siab

SS316 yog qhov zoo dua qhov twgkev raug tshuaj lom neeg, dej noo, lossis ntsevyog cov teeb meem tseem ceeb.

14. SS309 vs SS316: Cov Lus Qhia Txog Qhov Txawv Tseem Ceeb

  • Lub Hom Phiaj:

    • SS309 → Tsim los raukev pabcuam kub siab

    • SS316 → Tsim los raukev pabcuam tshuaj lom neeg corrosive / marine

  • Cov Khoom Siv Alloying Tseem Ceeb:

    • SS309 → Chromium thiab Nickel Siab

    • SS316 → Muaj Molybdenum

  • Kev Txwv Kub:

    • SS309 → Txog li 1100 ° C

    • SS316 → Txog li 870 ° C

  • Kev Tiv Thaiv Chloride:

    • SS309 → Nruab Nrab

    • SS316 → Zoo heev

  • Lub zog ntawm qhov kub siab:

    • SS309 → Zoo Tshaj Plaws

    • SS316 → Nruab Nrab

  • Tus nqi:

    • SS309 → Siab dua me ntsis

    • SS316 → Muaj ntau yam, pheej yig

Cov kev sib txawv no ua rau txhua qib tshwj xeeb rau nws qhov chaw ua haujlwm.

15. Yuav Xaiv Li Cas Ntawm Cov Hlau Stainless 309 thiab 316

Thaum xaiv ob hom hlau tsis xeb no, xav txog:

  1. Kub Ua Haujlwm:Yog tias lub kaw lus ua haujlwm siab dua 900 ° C, 309 yog qhov kev xaiv zoo.

  2. Ib puag ncig xeb:Yog tias muaj chloride lossis acid ntau, xaiv 316.

  3. Kev Xav Tau Tsim Khoom:Rau cov duab nyuaj thiab cov tiav tiav, 316 yooj yim dua rau kev ua haujlwm nrog.

  4. Nyiaj Txiag thiab Muaj:316 yooj yim dua thiab pheej yig dua rau kev siv hauv kev lag luam dav dav.

Los ntawm kev sib phim cov khoom siv rau cov xwm txheej kev pabcuam, koj tuaj yeem ua tiav lub neej ua haujlwm ntev dua thiab txo cov nqi txij nkawm.

16. Vim li cas ho xaiv SAKYSTEEL ua koj tus khub hlau tsis xeb

Nrog ntau xyoo ntawm kev paub txog kev tsim khoom thiab xa tawm cov hlau tsis xeb,SAKYSTEELmuab ob qho tib siHlau tsis xeb 309thiabHlau tsis xeb 316nyob rau hauv ntau hom khoom:

  • Cov Phaj thiab Cov Ntawv

  • Cov Tuav thiab Cov Qws

  • Cov Raj thiab Cov Kav Dej

  • Cov Khoom Siv thiab Flanges

  • Cov Cheebtsam Tshuab Ua Kev Cai

Txhua yam khoom muaj tag nrho cov khoom sivDaim ntawv pov thawj EN 10204 3.1/3.2, xyuas kom meej tias cov tshuaj lom neeg thiab cov khoom siv kho tshuab ua raws liCov qauv ASTM, ASME thiab EN.

Peb cov neeg siv khoom thoob plaws Tebchaws Europe, Middle East, thiab Asia ntseeg siab rau pebSAKYSTEELrau:

  • Kev tswj xyuas zoo nruj

  • Kev sib tw nqi

  • Lub sijhawm xa khoom sai

  • Cov ntaub ntawv pov thawj thiab cov ntawv qhia NDT

Txawm koj xav tau cov hlau uas tiv taus cua sov 309 lossis cov hlau uas tiv taus xeb 316, peb lav qhov zoo thiab ua raws li thoob ntiaj teb.

17. Cov Kev Xav Kawg

Lubqhov txawv ntawm Stainless Steel 309 thiab SS316lawv lub hom phiaj yog nyob rau hauv lawv txoj kev tsim:kev tiv thaiv kub thiab tiv thaiv corrosion.

  • SivSS309raucov cub tawg, cov pa tawm, thiab cov khoom siv ua haujlwm kub siab.

  • SivSS316raucov thoob dej tshuaj, cov qauv dej hiav txwv, thiab cov kab ke uas yoo dej noo.

Kev xaiv cov hlau zoo ua kom muaj kev nyab xeeb, kev ua tau zoo, thiab kev siv nyiaj tsawg.

Hauv lub ntiaj teb uas xav tau kev ruaj khov thiab kev ntseeg siab,SAKYSTEELtxuas ntxiv muab cov khoom siv hlau tsis xeb zoo tshaj plaws uas ua tau raws li cov qauv thoob ntiaj teb thiab ua haujlwm rau ntau yam kev xav tau ntawm kev lag luam.

Lub sijhawm tshaj tawm: Lub Kaum Hli-22-2025