Qhov twg zoo dua 1.4301 lossis 1.4307?

Dab tsi yog 1.4301 stainless hlau?

Hom 304 stainless hlau thiab 304L stainless hlau kuj hu ua 1.4301 thiab 1.4307, raws li. Hom 304 stainless hlau yog cov khoom siv ntau yam thiab dav siv stainless hlau. Nws yog qee zaum tseem raug xa mus los ntawm lub npe laus 18/8, uas yog los ntawm nws cov nominal muaj pes tsawg leeg ntawm 18% chromium thiab 8% npib tsib xee.

 

1.4307 stainless hlau yog dab tsi?

1.4307 yog ib qho qis- carbon austenitic stainless hlau, los yog 304L stainless hlau, nrog zoo weldability, corrosion kuj, thiab versatility. Nws yog ib qho kev siv nyiaj txiag rau lwm qib ntawm stainless hlau thiab yog dav siv hauv cov khoom noj thiab dej haus, khoom siv hauv chav dej, thiab cov khoom siv hauv tsev. Vim nws cov ntsiab lus carbon tsawg, 1.4307 stainless hlau yog ntau resistant rau intergranular corrosion tom qab vuam piv rau tus qauv 304 stainless hlau, thiab yog yooj yim rau tshuab thiab polish.

 

Dab tsi yog qhov sib npaug ntawm 1.4307 stainless hlau?
Cov khoom siv 1.4307 yog sib npaug rau ASTM 304L, UNS S30403, thiab X2CrNi18-9. Nws kuj tseem paub los ntawm lwm cov npe xws li 304S11 thiab EN 1.4306. Qhov no yog ib qho tsis tshua muaj carbon austenitic stainless hlau nrog zoo corrosion kuj thiab weldability.

 

Dab tsi yog qhov txawv ntawm 1.4301 thiab 1.4307 stainless hlau?
Nyob rau hauv cov ntsiab lus, EN 1.4301 (AISI 304) feem ntau nyiam thaum muaj zog dua txhua yam thiab hnav tsis kam, thaum EN 1.4307 (AISI 304L) yog ib qho kev xaiv zoo dua rau cov ntawv thov uas muaj qhov dav dav vuam lossis raug rau qhov chaw corrosive. Qhov kev xaiv kawg nyob ntawm qhov kev xav tau tshwj xeeb ntawm daim ntawv thov.

Kev sib piv tshuaj lom neeg

Element	EN 1.4301 (304) %	EN 1.4307 (304L) %
C	Tsawg dua los yog sib npaug li 0.07	Tsawg dua los yog sib npaug li 0.03
Si	Tsawg dua los yog sib npaug li 1.00	Tsawg dua los yog sib npaug li 1.00
Mn	Tsawg dua lossis sib npaug li 2.00	Tsawg dua lossis sib npaug li 2.00
P	Tsawg dua lossis sib npaug li 0.045	Tsawg dua lossis sib npaug li 0.045
S	Tsawg dua lossis sib npaug li 0.015	Tsawg dua lossis sib npaug li 0.015
Cr	17.5 – 19.5	17.5 – 19.5
Ni	8.0 – 10.5	8.0 – 10.5
N	Tsawg dua lossis sib npaug li 0.11	Tsawg dua lossis sib npaug li 0.11
Fe	Tshuav	Tshuav

 

Mechanical Properties (Annealed Condition)

1.4301 muaj zog tensile thiab yield zog me ntsis, thaum 1.4307 muaj zoo weldability.

Khoom	1.4301 (304)	1.4307 (304L)
Tensile zog (MPa)	Ntau dua lossis sib npaug li 520	Ntau dua lossis sib npaug rau 480
Yield zog 0.2% (MPa)	Ntau dua lossis sib npaug li 210	Ntau dua lossis sib npaug li 170
Elongation (%)	Ntau dua lossis sib npaug li 45	Ntau dua lossis sib npaug li 40
Hardness (HB)	Tsawg dua lossis sib npaug li 215	Tsawg dua lossis sib npaug li 215
Qhov ceev (g / cm³)	7.93	7.93

 

1.4301 vs . 1.4307 Stainless Steel: Corrosion Resistance

1.4307 (304L) muaj kev tiv thaiv corrosion zoo dua, tshwj xeeb tshaj yog tom qab vuam, piv rau 1.4301 (304) vim nws cov ntsiab lus qis dua. Thaum ob qib muaj kev tiv thaiv zoo nyob rau hauv ib puag ncig, 1.4307 cov pa roj carbon tsawg tiv thaiv kev tsim cov chromium carbides nyob rau hauv tshav kub- cuam tshuam cheeb tsam thaum vuam, uas pab tswj nws cov corrosion kuj.

 

1.4301 vs . 1.4307 Stainless hlau: Weldability

1.4307 (304L) muaj weldability zoo dua 1.4301 (304) vim nws cov ntsiab lus qis carbon, uas txo qhov kev pheej hmoo ntawm intergranular corrosion nyob rau hauv tshav kub - cuam tshuam cheeb tsam tom qab vuam . 1.4301 yog haum rau daim ntaub ntawv uas tsis muaj welding los yog tsawg welding, thaum 1.4307 welding yog ib qho kev xaiv zoo dua.

 

Qhov txawv ntawm 1.4306 thiab 1.4307 yog dab tsi?
1.4306 thiab 1.4307 yog ob qho tib si qis -carbon austenitic stainless hlau, tab sis 1.4306 muaj ntau dua nickel thiab chromium cov ntsiab lus, ua rau nws tiv taus corrosion ntau dua 1.4307. Thaum 1.4307 (lub npe hu ua 304L) yog ib qho ntawm cov qauv welded vim nws cov weldability, 1.4306 muaj kev tiv thaiv corrosion zoo dua thiab kev qaug zog me ntsis, ua rau nws tsim nyog rau kev siv nrog kev xav tau ntau dua corrosion.

 

GNEE muab ob qho tib si 1.4301 thiab 1.4307 nyob rau hauv ntau yam khoom siv:

Stainless hlau ntawv, coils, daim hlau, kav, raj, tuav, profiles

Nto xaiv: 2B, BA, No.1, No.4, HL, 8K daim iav

Txiav, polishing, slitting, dabtsi yog khoov, laser ua

Daim ntawv pov thawj: EN 10204 3.1 / 3.2, ISO 9001, PED, SGS, BV, TÜV.