Stainless hlau 409: Tus nqi -Ferritic zoo rau Automotive Exhausts

Dab tsi yog Stainless Hlau 409

Stainless hlau 409 yog ib qho qis -tus nqi ferritic stainless hlau nrog 10.5 mus rau 11.75 feem pua ​​chromium, tsim los rau siab - kub oxidation kuj thiab formability. Nws yog cov hlau tsis muaj hlau uas siv ntau tshaj plaws hauv cov tshuab hluav taws xob hauv tsheb vim tias nws sib npaug kev pheej yig nrog kev xeb txaus rau qhov chaw me me thiab thermal stability txog li 650 degrees C.

Tshuaj muaj pes tsawg leeg

Cov kev txwv tseem ceeb ntawm ASTM A240 yog carbon 0.08 feem pua ​​​​siab tshaj plaws, chromium 10.50 txog 11.75 feem pua, titanium 6 npaug ntawm cov ntsiab lus carbon rau 0.75 feem pua ​​​​siab tshaj plaws, thiab manganese 1.00 feem pua ​​​​siab tshaj. Lub titanium stabilizes cov hlau los ntawm kev tsim titanium carbides es tsis txhob chromium carbides, tiv thaiv grain ciam chromium depletion thaum cua sov thiab thermal cycling.

Mechanical Properties

Nyob rau hauv lub annealed mob 409 muaj qhov tsawg kawg nkaus tensile lub zog ntawm 380 MPa, qhov tsawg kawg nkaus yield zog ntawm 170 MPa, qhov tsawg kawg nkaus elongation ntawm 20 feem pua, thiab lub siab tshaj plaws hardness ntawm 183 HB. Lub zog qis tso cai yooj yim tsim rau hauv cov duab nyuaj, thiab cov hlau khaws cov ductility txog li 650 degrees C.

Vim li cas 409 Suits Automotive Exhausts

Cov ntsiab lus chromium tsim cov txheej txheem tiv thaiv oxide tiv thaiv cov pa oxidation, titanium stabilization tiv thaiv intergranular corrosion thaum caij tsheb kauj vab, thiab cov khoom siv tiv thaiv qhov kub ntawm 400 txog 600 ° C kev khiav hauj lwm ntau yam ntawm cov pa tshuab tsis muaj degrading. Tsis zoo li cov pa roj carbon steel, nws tsis xeb sai, txo cov zaus hloov, thiab nws yog pheej yig dua li qib austenitic xws li 304.

Fabrication

409 yog qhov tsim tau zoo heev, yog li kev ua haujlwm txias xws li khoov thiab dov yog qhov zoo tagnrho rau cov khoom seem. Vuam yog ua tau nrog TIG los yog MIG cov txheej txheem siv 409 muab tub lim, thiab tom qab-weld annealing tsis tas yuav tsum tau vim titanium stabilization. Kev txiav tuaj yeem ua los ntawm laser, plasma, lossis shearing.

Kev txwv thiab kev sib piv

409 tsis haum rau cov cheeb tsam hauv hiav txwv, qhov twg nws cov ntsiab lus tsis tshua muaj chromium thiab tsis muaj molybdenum ua rau pitting ceev hauv kev pabcuam chloride. Piv nrog 430, 409 yog pheej yig dua, muaj qhov zoo dua siab -kub oxidation tsis kam, thiab khaws cov ductility ntawm qhov kub thiab txias, thaum 430 muaj qhov zoo dua qub atmospheric corrosion kuj rau cov khoom siv hauv chav ua noj.

Cov lus nug nquag

Q: Cov ntsiab lus chromium ntawm 409 yog dab tsi?

A: 10.5 txog 11.75 feem pua.

Q: Vim li cas titanium ntxiv rau 409?

A: Txhawm rau kom ruaj khov carbon thiab tiv thaiv intergranular corrosion hauv thermal cycling.

Q: 409 puas tuaj yeem siv rau hauv cov dej hiav txwv?

A: Tsis yog, nws tsis muaj chromium thiab molybdenum rau chloride kuj.

Q: Qhov sib npaug ntawm 409 yog dab tsi?

A: EN 1.4512, JIS SUS409L, thiab DIN X2CrTi12.

Q: Dab tsi yog 409 siv rau?

A: Exhaust manifolds, mufflers, heat shields, thiab khoom siv ua liaj ua teb.

Q: 409 piv nrog 430 li cas?

A: 409 yog pheej yig dua nrog siab zoo - tus cwj pwm kub; 430 muaj qhov zoo tshaj plaws corrosion kuj.

Tiv tauj peb rau 409 stainless hlau los xij, coils, thiab strips rau tsheb thiab kev tsim khoom.