439 stainless hlau vs 304: Dab tsi yog qhov txawv?

Thaum xaiv cov hlau tsis muaj steel rau lub tsheb tso hluav taws xob, cov khoom siv hauv chav ua noj, cov khoom siv, lossis cov khoom lag luam, cov439thiab cov304Lawv yog ob ntawm cov khoom sib piv tshaj plaws. Txawm hais tias ob qho tib si muaj kev tiv thaiv corrosion thiab kav ntev, lawv tau tsim los rau ntau qhov chaw thiab kev cia siab rau tus nqi.

Dab tsi yog 439 stainless hlau?cov

NwsTIAB SA 439yog ferritic stainless hlau nrog17-19% chromiumthiab stabilized nrog titanium. Nws muaj kev tiv thaiv zoo heev rau oxidation ntawm qhov kub thiab txias, tsis tshua muaj coefficient ntawm thermal expansion thiab ntau dua rau kev ntxhov siab corrosion nyob rau hauv ib puag ncig nrog chlorides tshaj 304. Raws li nws tsis muaj npib tsib xee, nws cov nqi qis dua li ntawm 304. Nws yog siv nyob rau hauv lub tshuab tso pa, tshav kub exchangers, khoom siv thiab welded qhov chaw.

Dab tsi yog 304 stainless hlau?cov

NwsTIAB SA 304yog austenitic stainless hlau nrog18% chromiumthiab8% npib tsib xee. Nws yog qib siab tshaj plaws ntawm cov hlau tsis muaj steel nyob hauv lub ntiaj teb, nrog rau kev tsim tau zoo thiab weldability, thiab ntau dua toughness thoob plaws tag nrho qhov kub thiab txias. Ua tsaug rau nws cov ntsiab lus npib tsib xee, nws kim dua thiab dav siv hauv kev ua zaub mov, khoom siv tshuaj lom neeg, kho kom zoo nkauj hauv vaj tse, cov kav dej thiab cov khoom siv tub rog.

439 vs 304: Kev sib piv tshuaj lom neegcov

Qib	Cr (%)	Tsis yog (%)	C (%)	Koj (%)	Qauv
439	17.0-19.0 Nws	Tsawg dua los yog sib npaug li 0.50	Tsawg dua lossis sib npaug li 0.03	Ntxiv	Ferritic
304	18.0-20.0 Nws	8.0-10.5 Nws	Tsawg dua lossis sib npaug li 0.08	-	Austenitic

439 vs 304: Mechanical zogcov

Khoom	439	304
Tensile zog (MPa)	380–450 : kuv	515–750 : kuv
Yield zog (MPa)	170–260 : kuv	205-300 : kuv
Elongation (%)	20–25 : kuv	40
Hardness (HB)	Tsawg dua los yog sib npaug li 200	Tsawg dua lossis sib npaug li 201

439 vs 304: Corrosion kujcov

Ob leeg muaj kev sib piv corrosion kuj, tab sis cov304Nws yog feem ntau nrov rau nws cov kev ua kom tiav ntau dua, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig. Nws439Nws muaj kev tiv thaiv zoo ib yam li ntawm 304 thiab tus cwj pwm zoo hauv ib puag ncig tshwj xeeb xws li pitting thiab crevice corrosion nyob rau hauv muaj cov chlorides. Qhov txawv tseem ceeb yog qhov304yog austenitic,tsis sib nqusthiab nws cov corrosion kuj yog ruaj khov heev, thaum lub439yog ferritic,Sib nqusthiab muaj tsawg elongation.

439 vs 304: Kub ua haujlwmcov

Nws439Nws muaj tsawg dua kub tsis kam304, tshwj xeeb tshaj yog nyob rau hauv kub thiab corrosive ib puag ncig. Nws304Nws yog austenitic, nrog kev ua haujlwm zoo rau qhov kub thiab txias, siv txwv txog li ntawm650 degrees. Nws439Nws yog ferritic, nrog zoo thermal conductivity thiab mechanical zog, haum rau lub tsev kho kom zoo nkauj, cov khoom siv hauv tsev thiab cov burners.

Yog 439 magnetic?cov

Yog, stainless hlau439Nws yog magnetic. Nws yog ib hom ferritic stainless hlau, nrog cov ntsiab lus hlau siab thiab cov qauv crystalline uas ua rau nws sib nqus.

Kev sib piv ntawm daim ntawv thovcov

Scope	439	304
cov kav dej	✔ Zoo heev	✔ Zoo
khoom siv hauv chav ua noj	✔ Zoo	✔ Zoo heev
Kev ua tshuaj lom neeg	✘ Tsis pom zoo	✔ Zoo heev
Kev siv dej hiav txwv	✘ Tsawg tsis kam rau chlorides	✔ Zoo
Khoom siv	✔ Tus nqi qis	✔ Siab ntau
Tanks / kav dej	✔ Tsuas yog rau cov xov xwm mos	✔ Muaj ntau yam

439 vs 304: Nqe sib txawv (kev ua lag luam tshiab kawg)cov

439 paj:USD 900-1,200 / ton

304 paj:USD 1,400–1,750/ton

GNEEtam sim no muaj cov khoom siv stainless hlau hauv TshuagTIAB SA 439, suav nrog: phaj, ntawv, coils, strips, raj, tuav thiab xaim. Tsis tas li ntawd, peb muab ntau yam kev kho mob saum npoo rau koj xaiv, xws li:No. 1, 2B, 2D, BA, No. 3, No. 4, HL, No. 8thiab sandblasted.

Peb lav100% zoo. Peb yuav tsis xa cov khoom tsis raug rau peb cov neeg siv khoom. Tiv tauj peb kom kho koj cov khoom specifications, nrog rau cov duab, mob, kho deg thiab ua technology.

SUS 439 stainless steel plate