347 / 347H Stainless Hlau Tube

Kev piav qhia

Hom 347 / 347H stainless hlau yog austenitic qib ntawm chromium hlau, uas muaj cov columbium ua cov khoom ruaj khov. Tantalum kuj tseem tuaj yeem ntxiv rau kev ua kom ruaj khov. Qhov no tshem tawm cov nag lossis daus carbide, nrog rau intergranular corrosion hauv cov kav hlau. Hom 347 / 347H stainless hlau kav muaj ntau dua creep thiab kev nyuaj siab rupture zog dua qib 304 thiab 304L. Qhov no ua rau lawv haum rau raug rau rhiab heev thiab intergranular corrosion. Ntxiv mus, kev suav nrog columbium tso cai rau 347 cov kav dej kom muaj kev tiv thaiv corrosion zoo heev, txawm tias zoo dua li ntawm 321 stainless hlau kav. Txawm li cas los xij, 347H steel yog cov pa roj carbon ntau dua hloov ntawm stainless hlau yeeb nkab qib 347. Yog li ntawd, 347H steel tubes muab kev txhim kho kub thiab nkag tau zoo.

347 / 347H STAINLESS STEEL TUBE PROPERTIES

Hauv qab no yog cov khoom ntawm 347 / 347H stainless hlau kav uas muaj los ntawm Arch City Steel & Alloy:

 

Corrosion Resistance:

 

  • Exhibits oxidation kuj zoo ib yam li lwm yam austenitic stainless hlau
  • Nyiam tshaj qib 321 rau cov dej thiab lwm qhov chaw uas tsis muaj qhov kub thiab txias
  • Cov khoom kub zoo dua li 304 lossis 304L
  • Zoo tiv thaiv rau rhiab heev nyob rau hauv ib puag ncig kub
  • Haum rau cov khoom siv welded hnyav uas tsis tuaj yeem muab tshem tawm
  • Siv rau cov cuab yeej ua haujlwm ntawm 800 txog 150 ° F (427 txog 816 ° C)

 

Weldability:

 

  • 347 / 347H stainless hlau raj / kav dej yog suav tias yog cov weldable tshaj plaws ntawm tag nrho cov qib siab steels kav

  • Lawv tuaj yeem welded los ntawm tag nrho cov txheej txheem kev lag luam

 

Kev kho cua sov:

 

  • 347 / 347H stainless hlau raj thiab kav dej muaj qhov kub thiab txias ntawm 1800 txog 2000 ° F

  • Lawv tuaj yeem ua rau muaj kev ntxhov siab rau kev ntxhov siab yam tsis muaj kev phom sij ntawm kev cuam tshuam tom qab intergranular corrosion hauv carbide nag lossis daus ntawm 800 txog 1500 ° F

  • Tsis tuaj yeem hardened los ntawm kev kho cua sov

 

Daim ntawv thov:

 

347 / 347H cov kav dej feem ntau siv rau kev tsim cov khoom siv uas yuav tsum tau siv nyob rau hauv cov xwm txheej hnyav heev. Tsis tas li ntawd, lawv feem ntau siv rau hauv kev lag luam roj av refining. Cov ntawv thov loj muaj xws li:

 

  • Cov txheej txheem tshuaj kub kub
  • Thaum tshav kub kub exchanger tubes
  • Cov kav dej kub siab
  • Kub kub chav thiab boiler kav / raj
  • Heavy duty exhaust systems
  • Radiant superheaters
  • General refinery kav dej

 

CHEMICAL COMPOSITION

 

Cov tshuaj lom neeg muaj pes tsawg leeg % (max qhov tseem ceeb, tshwj tsis yog sau tseg)
Qib C Cr Mn Ni P S Si Cb/Ta
347 ib 0.08 max min: 17.0 Nws
max: 20.0 Nws		 2.0 max qis: 9.0
max: 13.0 Nws		 0.04 max 0.30 max 0.75 max min: 10 x c
max: 1.0 Nws
347 h ua ua: 0,04
max: 0.10 Nws		 min: 17.0 Nws
max: 20.0 Nws		 2.0 max qis: 9.0
max: 13.0 Nws		 0.03 max 0.30 max 0.75 max min: 10 x c
max: 1.0 Nws
Post lub sij hawm: Oct-09-2020