301LN vs 304 Austenitic Stainless Steels: Siab -Lub zog txias- Ua haujlwm

 

Dab tsi yog lawv cov ntsiab lus tseem ceeb thiab kev ua haujlwm zoo?

301LN (UNS S30153) muaj 16-18% Cr, 6-8% Ni, 0.10-0.20% N, thiab cov pa roj carbon tsawg, nrog nitrogen txhawb zog thiab austenite stability thaum lub caij txias. Nws ncav cuag lub zog tensile ntawm 1200MPa tom qab mob hnyav ua haujlwm.304 (UNS S30400) muaj 18-20% Cr, 8-10.5% Ni, thiab Tsawg dua lossis sib npaug li 0.08% C, xa lub zog tensile ntawm ~ 515MPa nyob rau hauv lub xeev annealed nrog lub xeev non-corrosion 30-100L thiab corrosion kuj. tab sis dhau los ua hlau nplaum tom qab ua haujlwm txias, thaum 304 tseem nyob non-magnetic txawm tias tom qab sib sau ua ke.

301LN lub peev xwm ua haujlwm txias ua haujlwm zoo li cas 304?

301LN's nitrogen ntxiv ua kom lub zog ua haujlwm hnyav-txias dov mus rau 50% txo qis dua nws lub zog yam tsis muaj kev kho cua sov, ua rau nws zoo tagnrho rau siab -lub zog springs thiab snap rings.304 ua hauj lwm-hardens dua qeeb thiab yuav tsum tau nruab nrab annealing rau hnyav sib sau, nce ntau lawm 1L lub sij hawm thiab retains. txias- ua hauj lwm lub zog, tiv thaiv kev tawg thaum lub sij hawm khoov los yog stamping txheej txheem.

Yuav ua li cas lawv corrosion resistances piv nyob rau hauv kev pab cuam ib puag ncig?

301LN's nitrogen ntxiv txhim kho pitting tsis kam piv rau tus qauv 301, sib piv 304 qhov kev ua tau zoo nyob rau hauv qhov chaw qhuav thiab me ntsis ntub dej hauv tsev.304 muaj kev tiv thaiv corrosion zoo dua, zam rau sab nraum zoov huab cua thiab kev sib cuag tshuaj lom neeg, thaum 301LN tuaj yeem xeb nyob rau hauv ntug dej hiav txwv lossis siab {{5} chloride kev pom zoo rau marine grade N. daim ntawv thov- hloov kho mus rau 316 lossis qib duplex rau kev raug dej ntsev.

Dab tsi yog qhov chaw thov rau ob qib no?

301LN yog siv rau siab - lub zog springs, roj teeb tiv tauj, snap fasteners, thiab cov khoom siv dav hlau uas xav tau lub teeb yuag thiab muaj peev xwm thauj khoom siab.Nws kuj tau teev tseg rau cov tubing hloov tau yooj yim thiab nthuav cov pob qij txha, qhov twg nws txias - ua hauj lwm lub zog thiab elasticity yog qhov tseem ceeb.304 yog qhov kev xaiv zoo tshaj plaws rau cov khoom siv hauv tsev: - cov khoom siv hauv tsev, cov khoom siv tshuaj lom neeg, cov khoom siv tshuaj lom neeg tanks, thiab cov khoom siv ua zaub mov.

Tus nqi thiab kev tsim khoom lag luam yog dab tsi - tawm ntawm 301LN thiab 304?

301LN yog 10-15% kim dua 304 vim nitrogen alloying thiab nruj dua cov tswj kev tsim khoom, ua rau nws raug nqi - siv tau rau siab - zog siv.301LN yuav tsum muaj cov txheej txheem ua haujlwm txias txias kom tsis txhob dhau -hardening thiab embrittlement4 cov ntaub ntawv yooj yim. muaj weldability zoo, tab sis 301LN's welds poob txias- ua haujlwm lub zog thiab yuav tsum tau rov ua dua los kho qhov ua tau zoo.