Dab tsi yog 347/347H Stainless Hlau

Dab tsi yog 347/347H stainless hlau

347 yog ib qho ruaj khov austenitic chromium hlau uas muaj niobium thiab tshem tawm cov nag lossis daus carbide, yog li tshem tawm cov kev cuam tshuam ntawm intergranular. Alloy 347 yog ruaj khov los ntawm kev sib ntxiv ntawm chromium thiab tantalum thiab muab ntau dua creep thiab kev nyuaj siab puas ntsoog dua li alloys 304 thiab 304L, uas kuj siv tau rau exposures yuav tsum tau xyuam xim rau sensitization thiab intergranular corrosion. Qhov sib ntxiv ntawm columbium kuj ua rau alloy 347 muaj kev tiv thaiv corrosion zoo heev, txawm tias zoo dua li alloy 321. 347H yog cov ntsiab lus ntawm cov pa roj carbon ntau dua ntawm alloy 347 thiab qhia tau tias muaj kev txhim kho kub thiab nkag tau zoo dua.

weldability
Austenitic stainless hlau yog suav tias yog qhov zoo tshaj plaws weldable ntawm tag nrho cov hlau alloy siab
Nws tuaj yeem welded los ntawm tag nrho cov fusion thiab tsis kam vuam txheej txheem
Kev kho cua sov
Qhov kub ntawm annealing yog 1800 txog 2000 degree F
Kev ntxhov siab annealing tuaj yeem ua tau nyob rau hauv cov nag lossis daus ntawm carbide ntawm 800 txog 1500 degree F yam tsis muaj kev pheej hmoo ntawm kev cuam tshuam tom qab intergranular corrosion.

Corrosion kuj:
Muab kev tiv thaiv rau tag nrho cov corrosion zoo ib yam li alloy 304
Rau cov ntawv thov qhov twg alloys xws li alloy 304 raug cuam tshuam rau intergranular corrosion
Nws yog feem ntau siv rau hauv cov khoom siv vuam hnyav uas tsis tuaj yeem muab tshem tawm thiab hauv cov khoom siv uas ua haujlwm ntawm 800 thiab 150 degree F (427 thiab 816 degree)
Nyob rau hauv aqueous thiab lwm yam kub tsis kub, 347 alloy yog superior rau 321 alloy
Nws yog tsuas yog siv nyob rau hauv qhov kub thiab txias qhov chaw uas yuav tsum tau ua hauj lwm rau rhiab heev, yog li tiv thaiv kom txhob qis qis ntawm intergranular corrosion.
Yooj yim rau kev ntxhov siab corrosion cracking
Pom zoo oxidation tsis kam rau tag nrho lwm yam 18-8 austenitic stainless hlau