SUS 321 vs SUS 316 Stainless Hlau Yeeb: Kub Kub
Dec 15, 2025
Tso lus
Puas yog koj xaiv cov kav hlau tsis muaj steel rau siab - qhov kub thiab txias qhov ntev - lub sij hawm ruaj khov tseem ceeb? Ob leeg SUS 321 thiab SUS 316 stainless hlau kav tau dav siv hauv kev lag luam, tab sis lawv qhov kev ua tau zoo sib txawv thaum raug tshav kub tas li, vuam kev nyuaj siab, thiab thermal cycling. Phau ntawv qhia no pab cov neeg yuav khoom xaiv cov qib zoo raws li qhov ntsuas kub, kev ua haujlwm zoo, thiab kev ua haujlwm ntawm lub neej.
SUS 321 stainless hlau tubing yog dab tsi?
SUS 321 yog titanium -stabilized austenitic stainless hlau. Qhov sib ntxiv ntawm titanium tiv thaiv cov nag lossis daus ntawm chromium carbide ntawm qhov kub thiab txias, ua rau nws zoo tagnrho rau cov kav dej welded ua haujlwm nyob rau hauv qhov kub ntawm 450-870 degree, haum rau cov cua kub exchangers, superheaters, tso pa, thiab expansion systems.
SUS 316 stainless hlau tubing yog dab tsi?
SUS 316 stainless hlau tubing yog austenitic stainless hlau tubing raws li 304 stainless hlau nrog ntxiv ntawm molybdenum (Mo). Nws muaj kev tiv thaiv corrosion zoo heev, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj cov tshuaj chlorine thiab dej ntsev (xws li dej hiav txwv) thiab ntawm qhov kub thiab txias. Nws tsis kam mus rau pitting thiab crevice corrosion yog deb tshaj 304, thiab nws yog dav siv nyob rau hauv chemical engineering, zaub mov ua, marine engineering, kho mob, thiab lwm yam kev lag luam.
SUS 321 vs SUS 316: Qhov tseem ceeb siab -Qhov kub sib txawv
SUS 321 yog titanium-stabilized, resistant rau carbide nag lossis daus, thiab tuav nws txoj kev ncaj ncees ntawm qhov kub thiab txias txog li ntawm 900 degree, ua rau nws zoo tagnrho rau kev siv qhov kub thiab txias; thaum SUS 316 muaj qhov ntsuas kub ntawm kwv yees li 870℃thiab qis qis dua. Yog li ntawd, 321 yog qhov tsim nyog rau cov ntawv thov uas xav tau ntev -lub sij hawm siab- qhov kub thiab txias, thaum 316 yog qhov tsim nyog rau corrosive chloride ib puag ncig ntawm qhov kub nruab nrab.
| Khoom | SUS 316 | SUS 321 |
|---|---|---|
| Oxidation Resistance txwv kub | 870℃(Lub sijhawm luv: 980 degree) | 925℃(Lub sijhawm luv: 1050 degree) |
| Kev khiav hauj lwm kub tsis tu ncua | 650℃(Corrosion-ib puag ncig dawb) | 800℃(Kev ntxhov siab- puag ncig) |
| Creep zog (700℃/ 1000h) | 40 MPa | 65 MPa ua |
| Intergranular Corrosion rhiab heev | Yooj yim rau corrosion nyob rau hauv rhiab heev kub ntau (450-850 degree) | Kev ua haujlwm zoo heev vim kev kho titanium stabilization |
SUS321 vs Alloy 316: Cov khoom sib npaug
| Stainless hlau qib | UNS Number | ASTM / EN Txuj | Japanese (JIS) | Lwm qhov sib npaug thoob ntiaj teb |
|---|---|---|---|---|
| 316 | S31600 | ASTM A193 B8M / EN X5CrNiMo17-12-2 | SUS 316 | STS316, 1.4401, 04Cr17Ni12Mo2 |
| 321 | S32100 | ASTM A240 Hom 321 / EN X6CrNiTi18-10 | SUS 321 | AFNOR Z6CNT18-10, DIN X6CrNiTi18-11, GB 0Cr18Ni10Ti, Swedish 2337, Russia GOST X6CrNiTi18-10 |
SUS321 vs Alloy 316: Cov Khoom Siv Tshuaj
| Qib | C (%) | Cr (%) | Tsis muaj (%) | Mo (%) | Ti (%) | Lub Hom Phiaj |
|---|---|---|---|---|---|---|
| SUS 321 | Tsawg dua los yog sib npaug li 0.08 | 17.0–19.0 | 9.0–12.0 | - | Ntau dua lossis sib npaug li 5 × C | Stabilized tiv thaiv carbide nag lossis daus |
| 316 (316) | Tsawg dua los yog sib npaug li 0.08 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | - | Superior corrosion & chloride kuj |
SUS321 vs Alloy 316: Mechanical Properties
| Khoom | TIAB SA 321 | Alloy 316 |
|---|---|---|
| Tensile zog (MPa) | 515 | 490–620 |
| Yield zog (MPa) | 205 | Ntau dua lossis sib npaug li 170 |
| Elongation (%) | 40 | 35–40 |
| Hardness | Tsawg dua lossis sib npaug li 217 HB | Tsawg dua lossis sib npaug li 217 HB |
| Max Service Kub | Mus txog 900 degree | Txog li 550 degree |
SUS316 vs SUS321 stainless hlau: Corrosion kuj
Qhov sib ntxiv ntawm molybdenum (Mo) hauv SUS316 stainless hlau ua rau SUS316 los tsim cov oxide zaj duab xis ruaj khov ntawm cov ciam teb, tshwj xeeb tshaj yog nyob rau hauv acidic ib puag ncig uas muaj chloride ions (xws li dej hiav txwv thiab tshuaj lom neeg), nws tsis kam mus rau pitting thiab crevice corrosion yog ho zoo dua li cov austenitic stainless hlau zoo tib yam. Piv txwv li, hauv 3.5% NaCl tov, qhov tseem ceeb pitting kub (CPT) ntawm SUS316 tuaj yeem ncav cuag 70 degree, thaum SUS304 tsuas yog 40 degree.
Dab tsi yog qhov txawv ntawm ss316ti thiab ss321?
SS316Ti muaj kev tiv thaiv zoo tshaj rau chloride corrosion (PREN tus nqi ntawm kwv yees li 23-27) thiab tsim nyog rau nruab nrab siab - qhov kub thiab txias (kwv yees li 870℃). SS321, ntawm qhov tod tes, qhia tau zoo dua siab dua - qhov kub thiab txias, nce mus txog kwv yees li 900℃, thiab muaj kev nkag siab ntau dua. Yog li ntawd, rau kev siv tsis tu ncua nyob rau hauv ib puag ncig siab tshaj 800 degree, SS321 yog qhov kev xaiv zoo dua; Thaum rau ntau corrosive, qis-kub ib puag ncig, SS316Ti yog qhov tsim nyog dua.
GNEE muaj ntau tshaj 20 xyoo ntawm kev paub nyob rau hauv stainless hlau yeeb nkab manufacturing, muab thoob ntiaj teb kev ntseeg siab piping daws. Peb tau cog lus rau qhov zoo, kev cia siab, thiab kev txaus siab rau cov neeg siv khoom.
Peb muab:
ISO 9001, CE, PED, SGS, thiab BV ntawv pov thawj
Hauv - tsev vuam, annealing, thiab tsis yog -cov chaw kuaj kev puas tsuaj
Kev tswj xyuas nruj thiab 3.1/3.2 daim ntawv pov thawj
Kev xa khoom sai thiab kev txhawb nqa thoob ntiaj teb
Customized OEM kev pab cuam rau engineering tej yaam num
Xa kev nug