Qhov sib txawv ntawm SS 304 thiab ss 316 stainless hlau daim phiaj yog corrosion tsis kam. SS 316 muaj kev tiv thaiv zoo dua, tshwj xeeb tawm tsam chloride corrosion. Qhov kev txhim kho corrosion yog ntaus nqi mus rau ntxiv ntawm molybdenum. Thaum ob qho tib si yog Austenitic stainless hlau, 316 feem ntau kim dua vim yog ntxiv ntawm Molybdenum.
Dab tsi yog qhov sib txawv ntawm 316L stainless hlau thiab 304 stainless hlau?
316 thiab 316L Stainless hom hlau zoo ib yam li 304 stainless hlau, uas feem ntau siv hauv kev lag luam khoom noj thiab lwm yam kev siv. Txawm li cas los xij, 316 thiab 316L stainless hlau muaj ntau dua corrosion tsis kam thiab siab dua-kub lub zog. Lawv ob leeg tsis yog neeg tsis yog los ntawm kev kho cua sov thiab yog li ntawd tsim tau yooj yim.
Qhov sib txawv ntawm SS 316 daim hlau thiab SS 304 daim hlau
Thaum piv 316 stainless hlau (SS316) thiab 304 stainless hlau (SS304) muaj ob peb qhov sib txawv. SS316 lub phaj yog ntau dua corrosion-resistant dua li SS304 thiab muaj qhov ntau dua chloride, ua rau nws zoo rau cov kev siv nthuav tawm ib puag ncig corrosive. SS316 kuj tseem muaj ntau lub zog kub siab, nrog kev kub ntxhov txog 900℃/ 1650℃f yam tsis muaj kev cuam tshuam tseem ceeb. SS316 cov khoom pov thawj siab dua ntawm lub zog kub tshaj SS304, thaum ob qho tib si muab cov yam ntxwv zoo heev thiab cov kws kho zoo. Vim tias SS316 muaj ntau dua kev tawm tsam rau pitting thiab crevice corrosion dua cov ntaub ntawv qis dua hauv SS304 lub phaj yuav tsum muaj cov nqi tswj cov nqi qis dua.
Tshuaj Muaj Tshuaj
SS 304 lub phaj muaj cov ntsiab lus tsib xee tsawg dua, xws li ntawm 8-10.5% npib tsib xee thiab 18-20% chromium. SS 316 lub phaj, ntawm qhov tod tes, muaj cov ntsiab lus npib tsib xee ntawm 10-14% thiab cov ntsiab lus chromium ntawm 16-18%. Lub siab dua tsib xee cov ntsiab lus nyob rau hauv SS 316 lub phaj muab cov neeg zoo corrosion tsis kam nyob hauv chloride ib puag ncig thiab dej qab zib ib puag ncig piv rau SS 304 phaj.
Qhov sib txawv ntawm ss 316 thiab SS 304 phaj nyob hauv lawv cov tshuaj lom neeg muaj pes tsawg leeg. SS 316 yog ib qho tsis muaj roj av muaj cov molybdenum, uas ua rau nws ntau dua colybdenum lub zog thiab tawv me me rau cov kev siv marine lossis cov khoom siv acidic. Nyob rau hauv cov nqe lus ntawm cov tshuaj muaj kuab lom, lub ntsiab sib txawv yog tias 304 chromium hlau feem ntau muaj 186 tus neeg siv nyiaj npib tsib caug xyoo thiab 12-15% npib tsib. Ib qho ntxiv, tom kawg kuj muaj 2-3% molybdenum, uas yog tsis muaj nyob rau hauv lub qub.
Corrosion Kuj
SS 316 phaj feem ntau ntau dua corrosion-resistant dua SS 304 phaj, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig muaj chloride ions. Qhov no yog vim ss 316 lub phaj muaj cov ntsiab lus molybdenum siab dua, uas txhim kho nws txoj kev tiv thaiv kom pitting corrosion. Txawm li cas los xij, SS 304 lub phaj tseem ua tau zoo hauv cov chaw muaj kev nyab xeeb tsawg.
Ob lub 316 thiab 304 cov phiaj hlau stainless yog tsim los ntawm alloy steels, tab sis lawv cov kev sib txawv. SS 304 muaj chromium, npib tsib xee, thaum ss 316 ntau dua corrosion-resistant ntau dua li peb lub sij hawm muaj peb zaug ntawm cov qib kawm.
Lub zog
SS 316 Phaj muaj lub zog siab dua thiab tawm lub zog dua SS 304 phaj. Lub zog no siab dua yog ntaus nqi rau kev ntxiv ntawm Molybdenum thiab ntau dua npib tsib xee nyob hauv SS 316 phaj. Txawm li cas los xij, SS 304 phaj tseem muaj lub zog txaus rau feem ntau cov ntawv thov.
SS 316 thiab SS 304 phaj sib txawv hauv lawv cov tshuaj muaj kuab lom. Qhov sib txawv ntawm 2% -3% Molybdenum rau SS 316, uas ua rau nws muaj ntau corrosion-resistant ntau dua li SS 304 phaj. SS 316 lub phaj tseem muaj lub zog ntau dua thiab muaj peev xwm tiv taus qhov kub thiab txias, ua rau nws ruaj khov. Vim nws cov ntsiab lus molybdenum siab dua, SS 316 lub phaj tseem tiv taus pittingist rau pitting thiab crevice corrosion hauv cov chaw sov sov.
Gnee steel yog tus xa khoom ntawm SS 316 thiab SS 304. Peb cov khoom lag luam muaj suav nrog cov leeg hlab ntsha (qhov ntau thiab tsawg: 4-219 hli, tuab: 0.5-20 m mm); Welded Tubes (Qhov ntau thiab tsawg: 5.0-1219.2 mm, thickness: 0.5-20 m mm); Daim hlau (tuab: 0.1 txog 100 hli, dav: 10-2500 hli); Sawb; Alloy Round Barms (Qhov ntau thiab tsawg: 3-800 hli, lub taub); Cov kab tuav tuav (ntau thiab tsawg: 2-100 hli, tuab: 10-500 hli); hexagonal tuav (qhov ntau thiab tsawg: 2-100 hli); Hlau Rods; thiab cov ntu. Peb khub nrog hlau mills los muab peb cov neeg siv khoom nrog 625 Alloy uas tau sib ntsib lossis ntau dua li ntau cov qauv kev lag luam, thiab, iso, din, thiab bs. Gnee steel stocks thiab muag ss 316 ntawv thiab SS 304 daim ntawv, ib daim hlau, cov kab sib tw, hexagons, cov pas nrig hlau, cov pas nrig hlau. Koj tau txais tos hu rau peb rau cov lus hais txhua lub sijhawm ntawmru@gneesteelgroup.com