Kev sib piv ntawm 316 Thiab 316L Stainless Hlau: Txheem Vs Tsawg -Carbon Molybdenum- Muaj Qib

316 thiab 316L yog molybdenum- muaj cov austenitic stainless hlau, nrog rau cov ntsiab lus sib txawv yog cov ntsiab lus carbon . 316L yog qhov qis- carbon variant ntawm 316, uas txhim kho kev cuam tshuam ntawm intergranular corrosion, thaum 316 tau zoo dua siab dua - qhov kub thiab txias. Ob leeg muaj cov tshuaj chloride ion corrosion kuj zoo heev vim molybdenum ntxiv, thiab yog cov khoom nyiam rau qhov hnyav corrosion.

Core Parameter Sib piv

Parameter	316 Stainless hlau	316L Stainless hlau
Chemical Composition (wt%)	C Tsawg dua lossis sib npaug 0.08, Cr=16.00-18.00, Ni=10.00-14.00, Mo=2.00-3.00, Fe=Balance	C Tsawg dua lossis sib npaug 0.03, Cr=16.00-18.00, Ni=10.00-14.00, Mo=2.00-3.00, Fe=Balance
Mechanical Properties (Annealed)	Tensile Strength Ntau dua los yog sib npaug rau 515MPa, Yield Strength Ntau dua lossis sib npaug rau 205MPa, Elongation Ntau dua lossis sib npaug li 40%, Hardness Tsawg dua lossis sib npaug rau 217HB	Tensile Strength Ntau dua los yog sib npaug rau 485MPa, Yield Strength Ntau dua lossis sib npaug rau 170MPa, Elongation Ntau dua lossis sib npaug li 40%, Hardness Tsawg dua lossis sib npaug rau 217HB
Kev Pabcuam Kub	-196℃rau 870℃(kev pabcuam txuas ntxiv)	-196℃rau 870℃(kev pabcuam txuas ntxiv)
Qib sib npaug	SUS316 (JIS), EN 1.4401, UNS S31600	SUS316L (JIS), EN 1.4404, UNS S31603

Qhov tseem ceeb ntawm kev ua tau zoo sib txawv: 1. Intergranular corrosion kuj: 316L tau zoo dua intergranular corrosion tsis kam tshaj 316, tsis muaj ncej-weld tshav kub kho; 316 yuav tsum tau tswj cov vuam cua sov tawm tswv yim kom tsis txhob muaj kev cuam tshuam ntawm intergranular corrosion . 2. Siab - qhov kub thiab txias: 316 muaj zog nkag siab dua li 316L ntawm 600-}870 degree, haum rau siab - qhov kub thiab txias-kev coj tus kheej cov khoom. 3. Ob leeg muaj corrosion kuj zoo heev, tab sis corrosion kuj: 316L muaj qhov zoo dua corrosion kuj nyob rau hauv qhov chaw tsis muaj zog acid vim yog cov ntsiab lus qis dua.

Siv tau Scenario Distinction: 316 yog haum rau siab- kub (600-870 degree) thiab qis- corrosion chloride ion ib puag ncig, xws li siab -cov kav dej kub, thermal fais fab nroj tsuag cov kav dej (cov cheeb tsam ntug dej hiav txwv), thiab cov khoom siv ua zaub mov (high-} kub sterilization qhov chaw). 316L yog haum rau vuam-qhov hnyav, hnyav corrosion ib puag ncig, xws li marine engineering, seawater desalination khoom, tshuaj tiv thaiv kettles (chloride-muaj xov xwm), thiab nuclear fais fab nroj tsuag thib ob Circuit Court Cheebtsam.

Tswv yim Q&A

Q1: Dab tsi yog qhov tseem ceeb ntawm 316/316L tshaj 304/304L? A1: Qhov sib ntxiv ntawm molybdenum (2-3%) ua rau lawv cov chloride ion corrosion kuj 3-5 npaug siab dua 304/304L; nyob rau hauv 3.5% NaCl tov, tus nqi txhua xyoo corrosion ntawm 316L yog tsawg dua los yog sib npaug rau 0.005mm, thaum ntawm 304 yog 0.02-0.05mm.

Q2: Thaum twg xaiv 316L hloov 316? A2: Xaiv 316L yog tias cov khoom muaj ntau qhov vuam, ua haujlwm hauv qhov chaw corrosive (seawater, chloride- muaj cov xov xwm) ntev, los yog yuav tsum tau tom qab -weld corrosion kuj tsis muaj kev kho cua sov.

Q3: 316L puas tuaj yeem siv rau hauv nuclear fais fab nroj tsuag? A3: Yog. Nws ua tau raws li cov qauv ntawm cov khoom siv hluav taws xob nuclear (ASME SA-213), muaj hluav taws xob zoo heev thiab kev tiv thaiv corrosion, thiab yog siv dav hauv nuclear fais fab nroj tsuag theem nrab cov kav xa hluav taws xob thiab cov khoom siv hluav taws xob.

Q4: Dab tsi yog qhov hnav tsis kam ntawm 316 thiab 316L? A4: Lawv hnav tsis kam zoo ib yam, nrog Brinell hardness Tsawg dua lossis sib npaug rau 217HB; rau kev hnav- cov xwm txheej hnyav, kev kho qhov tawv tawv (xws li nitriding) yog qhov yuav tsum tau txhim kho hnav tsis kam.

Q5: Yuav ua li cas xaiv cov khoom siv vuam rau 316 thiab 316L? A5: 316 qhov sib tw ER316 vuam hlau, 316L sib tw ER316L vuam hlau; cov khoom siv vuam cov ntsiab lus ntawm cov pa roj carbon monoxide yuav tsum ua raws li cov hlau hauv lub hauv paus kom ntseeg tau tias muaj kev tiv thaiv corrosion thiab siab - qhov kub thiab txias ntawm qhov vuam.