Qhov txawv ntawm 204 thiab 304 Stainless hlau yog dab tsi
Gnee Steel
Qhov txawv ntawm 204 thiab 304 Stainless hlau yog dab tsi
Ob leeg SS 204 thiab SS 304 yog austenitic stainless hlau, tab sis lawv cov khoom sib xyaw, cov khoom, thiab kev siv sib txawv. SS 304 yog 300 series alloy nrog cov ntsiab lus siab nickel, muab kev tiv thaiv corrosion zoo heev; thaum SS 204 yog 200 series alloy nrog cov ntsiab lus qis nickel, siab manganese cov ntsiab lus, thiab tus nqi qis dua. Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau kev xaiv cov khoom tsim nyog. Gnee Steel Group, ib lub tuam txhab ua lag luam hauv Suav teb thiab xa tawm, muab ob qho tib si qib stainless hlau ua raws li ASME SA240 tus qauv. Raws li tus kws tshaj lij hauv ASME SA240 stainless hlau los xij, Gnee Steel muab cov kev daws teeb meem rau cov neeg siv khoom thoob ntiaj teb. Phau ntawv qhia no piv SS 204 thiab SS 304, suav nrog qhov ntom ntawm SS 304 daim ntawv, SA-240 304L cov khoom, thiab lwm yam tseem ceeb.
Gnee Steel
Dab tsi yog qhov tsis zoo ntawm 304 stainless hlau?
304 stainless hlau muaj ib qho tsis zoo -nws yog qhov ua tau rau corrosion los ntawm cov tshuaj chloride los yog cov dej ntsev (xws li ze ntawm hiav txwv). Chloride ions tuaj yeem tsim cov ntsiab lus corrosion hauv thaj chaw hauv cheeb tsam, hu ua "pitting corrosion," uas tuaj yeem kis tau hauv qab chromium tiv thaiv txheej, yog li ua rau cov qauv sab hauv.
Dab tsi yog SS 204 stainless hlau?
SS 204 yog 200 series austenitic stainless hlau nrog qis nickel cov ntsiab lus (1{10}}3%) thiab cov ntsiab lus manganese ntau dua (5-7%), ua rau tus nqi qis dua tab sis qis dua corrosion kuj. Nws yog sib npaug rau UNS S20400 thiab tsim nyog rau kev siv sab hauv xws li rooj tog. Gnee Steel's SS 204 ua tau raws li cov qauv rau SS 240 thiab SS 304 lwm txoj kev, thiab nws cov khoom tsis sib nqus zoo ib yam li SS 304.
Dab tsi yog SS 304 stainless hlau?
SS 304 yog 300 series austenitic stainless hlau nrog cov ntsiab lus ntau dua nickel (8-10.5%), nthuav tawm zoo heev corrosion kuj thiab ductility. Nws yog sib npaug rau UNS S30400 thiab EN 1.4301 thiab tsim nyog rau corrosive ib puag ncig. Gnee Steel's SA240 Gr 304 yog qhov zoo tagnrho rau SA 240 hom 304 304L variant, thiab SA 240 304L cov khoom ua tau raws li cov pa roj carbon tsawg.
Kev sib piv tshuaj lom neeg
Cov lus hauv qab no qhia txog kev sib xyaw:
|
Element |
SS 204 (%) |
SS 304 (%) |
Kev cuam tshuam |
|---|---|---|---|
|
Chromium (Cr) |
16-18 |
18-20 |
Zoo sib xws, tab sis 304 muaj ntau dua rau kev tiv thaiv zoo dua. |
|
Nickel (Ni) |
1-3 |
8-10.5 |
Siab dua nyob rau hauv 304 rau superior corrosion; 204 siv Mn (5-7%) hloov. |
|
Manganese (Mn) |
5-7 |
Tsawg dua los yog sib npaug 2 |
Siab dua hauv 204 rau austenite stability, nce hardness. |
|
Cov pa roj carbon (C) |
Tsawg dua los yog sib npaug li 0.15 |
Tsawg dua lossis sib npaug li 0.08 |
qis dua hauv 304 kom tsis txhob hnov qab. |
Rauyog 240 304 cov ntaub ntawvthiabcov ntaub ntawv ntawm 240 304, 304's muaj pes tsawg leeg ua kom zoo dua durability.
Mechanical Properties Sib piv
SS 204 yog qhov nyuaj dua, thaum SS 304 yog ntau dua.
|
Khoom |
SIB 204 |
SIB 304 |
Sau ntawv |
|---|---|---|---|
|
Tensile zog |
620 MPa rau |
515 MPa (min) |
204 muaj zog dua. |
|
Yield zog |
310 MPa |
205 MPa (min) |
204 muaj txiaj ntsig ntau dua. |
|
Elongation |
40% |
40% |
Zoo sib xws. |
|
Hardness (Brinell) |
201 max |
201 max |
204 feem ntau nyuaj. |
|
Qhov ntom |
7.8 g / cm³ |
7.93 g/m² |
Zoo sib xwsss304 phaj ceevthiabyog 240 304l ceev. |
Corrosion Resistance: SS 204 vs 304
Vim nws cov ntsiab lus nickel ntau dua, 304 stainless hlau muaj kev tiv thaiv corrosion zoo dua thiab zoo dua rau qhov chaw sab nraum zoov lossis qhov chaw ntub dej . 204 stainless hlau yog qhov yooj yim rau xeb hauv qhov chaw ntub dej thiab tsim nyog rau kev siv sab hauv tsev.
Weldability thiab Formability
Ob leeg tuaj yeem welded, tab sis SS 304 zoo dua rau cov welds nyuaj. Lawv formability zoo sib xws, tab sis SS 304 muaj ductility zoo dua.
Nqe sib piv
Vim nws cov ntsiab lus qis nickel, SS 204 yog tus nqi ntawm $ 1200- $ 1800 ib tonne, uas yog 20-30% pheej yig dua SS 304 ($ 1820- $ 3584 ib tonne). Gnee Steel muaj cov nqi sib tw heev rau 304 stainless hlau los xij, daim hlau, cov ntawv nyias, thiab cov phaj tuab.
Kev siv ntawm SS 204 thiab SS 304
Cov lus hauv qab no qhia txog cov ntawv thov:
|
Kev lag luam |
SS 204 Daim ntawv thov |
SS 304 Daim ntawv thov |
Yam khoom |
|---|---|---|---|
|
Tshuaj |
Lub tank me me |
Corrosive reactors |
SA 240 Gr 317L |
|
Khoom noj khoom haus |
Cov khoom siv sab hauv tsev |
Cov nkoj ua haujlwm |
SA240 gr 316L |
|
Kev tsim kho |
Sab hauv vaj huam sib luag |
Sab nraum cov qauv |
TIAB SA 240 Gr 321 |
|
Automotive |
Sab hauv trims |
Exhaust systems |
TIAB SA 240 Gr 409 |
Gnee Steel's ASME SA 213 / SA 213M stainless kav ua tiav ob qho tib si.
Sib piv SS 204 thiab SS 304 nrog Lwm Cov Qib
204/304 Stainless Hlau vs . 430 Stainless Hlau: 304 stainless hlau muaj kev tiv thaiv corrosion zoo dua, thaum 430 stainless hlau yog hlau nplaum thiab tsis tshua muaj nqi.
204/304 Stainless Hlau vs . 316 Stainless Hlau: 304 stainless hlau muaj ntau yam kev siv, thaum 316 stainless hlau yog haum rau chloride ib puag ncig.
Gnee Steel muaj ntau yam kev xaiv qib siab hauv nws txoj kev xaiv stainless hlau.
Vim li cas thiaj xaiv Gangsteel rau SS 204 thiab SS 304?
Gnee Steel muaj cov khoom lag luam thiab kev pabcuam hauv qab no:
Kev Ua Haujlwm Zoo: Ua tau raws li ASME SA240 thiab ASTM A240 tus qauv.
Customization Services: Muaj nyob rau hauv ntau qhov ntau thiab tsawg thiab tiav.
Kev xa khoom thoob ntiaj teb: Kev xa khoom thoob ntiaj teb.
Yam khoom: suav nrog SA240 Gr 347 thiab SA240 Gr 201L.
