304H Stainless hlau yeeb nkab

Kev piav qhia

304H yog austenitic stainless hlau, uas muaj 18-19% chromium thiab 8-11% npib tsib xee nrog qhov siab tshaj ntawm 0.08% carbon. 304H stainless hlau kav yog cov kav dej ntau yam thiab siv dav hauv tsev neeg stainless hlau. Lawv muaj kev tiv thaiv corrosion zoo heev, muaj zog heev, yooj yim ntawm fabrication, thiab zoo formability. Li no, yog siv rau ntau yam kev siv hauv tsev thiab kev lag luam. 304H stainless hlau muaj kev tswj cov ntsiab lus ntawm 0.04 txog 0.10. Qhov no muab kev txhim kho qhov kub thiab txias zog, txawm tias siab tshaj 800o F. Piv rau 304L, 304H stainless hlau kav muaj ntau dua lub sij hawm luv luv thiab lub sij hawm ntev creep zog. Tsis tas li ntawd, lawv muaj peev xwm tiv taus ntau dua 304L.

304H STAINLESS STEEL PIPE PROPERTIES

Hais hauv qab no yog cov yam ntxwv tseem ceeb ntawm 304H stainless hlau kav uas muaj los ntawm Arch City Steel & Alloy:

Thaum tshav kub kub Resistance:

  • Haum rau kev siv kub kub, vim nws muaj zog dua ntawm qhov kub siab tshaj 500 ° C thiab mus txog 800 ° C

  • Qib 304H muaj kev ua haujlwm zoo oxidation nyob rau hauv kev sib tshuam kev pabcuam rau 870 ° C thiab hauv kev pabcuam txuas mus rau 920 ° C

  • Ua sensitized nyob rau hauv qhov kub ntawm 425-860 ° C; li no tsis pom zoo yog tias yuav tsum muaj aqueous corrosion kuj.

Corrosion Resistance:

  • Zoo tiv thaiv corrosion nyob rau hauv oxidizing ib puag ncig, thiab nruab nrab aggressive organic acids vim muaj chromium thiab npib tsib xee feem.

  • Ua tib yam nyob rau hauv feem ntau corrosive ib puag ncig

  • Tej zaum yuav qhia qis dua tus nqi piv rau cov pa roj carbon ntau dua 304.

Weldability:

  • Yooj yim welded los ntawm feem ntau txheej txheem txheej txheem.

  • Tej zaum yuav tsum tau anneal tom qab vuam

  • Annealing pab nyob rau hauv restore lub corrosion kuj poob los ntawm sensitization.

Kev ua:

  • Pom zoo ua haujlwm kub ntawm 1652-2102 ° F
  • Cov yeeb nkab lossis cov raj yuav tsum tau muab tso rau ntawm 1900 ° F
  • Cov khoom yuav tsum yog dej quenched los yog sai txias
  • Qib 304H yog qhov zoo nkauj thiab ua tau yooj yim
  • Cold forming pab txhawb zog thiab hardness ntawm qib 304H
  • Cold forming tej zaum yuav ua rau alloy me ntsis sib nqus

Machineability:

  • Cov txiaj ntsig zoo tshaj plaws yog ua tiav ntawm qeeb qeeb, lubrication zoo, hnyav dua, thiab cov cuab yeej ntse

  • Ua hauj lwm hardening thiab nti tawg thaum lub sij hawm deformation.

Daim ntawv thov ntawm Qib 304H Stainless hlau kav

Qee qhov piv txwv ntawm cov ntawv thov uas qib 304H feem ntau siv rau suav nrog:

  • Petroleum refineries
  • Boilers
  • Cov kav dej
  • Kub exchangers
  • Condenser
  • Chav tso tawm
  • Txias yees
  • Hluav taws xob tsim cov nroj tsuag
  • Qee zaum siv hauv chiv thiab tshuaj nroj tsuag

CHEMICAL COMPOSITION

Cov tshuaj lom neeg muaj pes tsawg leeg % (max qhov tseem ceeb, tshwj tsis yog sau tseg)
Qib Cr Ni C Si Mn P S N
3 04 h min: 18.0 Nws
max: 20.0 Nws		 qis: 8.0
max: 10.5 hli		 ua: 0,04
max: 0.10 Nws		 0.75 ib
max		 2.0
max		 0.045 ib
max		 0.03 ib
max		 0.10
max
Post lub sij hawm: Oct-09-2020