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316L vs 904L stainless hlau

Oct 27, 2025

​Dab tsi yog qhov sib txawv ntawm 316L thiab 904L stainless hlau?​
Thaum xaiv cov hlau tsis xeb rau cov ntawv thov xav tau, 316L thiab 904L yog ob txoj kev muaj suab nrov. Txawm hais tias ob qho tib si muab cov kev tiv thaiv corrosion zoo tshaj plaws, lawv txawv nyob rau hauv lawv cov alloy muaj pes tsawg leeg, raug nqi thiab ua tau zoo. Kab lus no sib piv 314L thiab 904L thiab 904L kom meej los pab kev cov kws tshaj lij kev txiav txim siab.

 

​Dab tsi yog qhov sib txawv tseem ceeb ntawm 316L thiab 904L?​

Teb:
316L yog cov roj carbon aus roj carbon monustenitic stainless hlau nrog Molybdenum, muab cov khoom siv corrosion zoo tshaj plaws hauv ib puag ncig thiab cov chaw puag ncig.
904L muaj ntau ntau qib tsib xee, molybdenum thiab tooj liab, muab nws zoo nkauj tsis kam rau cov muaj zog acids muaj zog, tshwj xeeb tshaj yog cov sulfuric acid.

 

​Tshuaj Muaj Tshuaj​

​Lub ntsiab​
​316L (% los ntawm qhov hnyav)​
​904L (% los ntawm qhov hnyav)​
​Carbon (c)​
Tsawg dua los yog sib npaug rau 0.03
Tsawg dua los yog sib npaug rau 0.02
​Chromium (cr)​
16.0 - 18.0
19.0 - 23.0
​Npib tsib caug (ni)​
10.0 - 14.0
23.0 - 28.0
​Molybdenum (mo)​
2.0 - 3.0
4.0 - 5.0
​Tooj Liab (Cu)​
-
1.0 - 2.0
​Nitrogen (n)​
Tsawg dua los yog sib npaug rau 0.10
Tsawg dua los yog sib npaug rau 0.10

​Tseem ceeb takaway:​

904L muaj ntau ntau ntawm tsib xee, molybdenum thiab tooj liab, muab nws zoo corrosion tsis zoo nyob rau hauv kev sib zog ib puag ncig, tshwj xeeb tshaj tawm tsam sulfuric acid.

 

​Cov Khoom Siv Neeg Kho Tshuab​

​Ntiag tug​
​316L stainless hlau​
​904L Stainless Hlau​
Tensile lub zog (mpa)
Ntau dua los yog sib npaug rau 485
Ntau dua los yog sib npaug rau 490
Yield zog (mpa)
Ntau dua los yog sib npaug rau 170
Ntau dua los yog sib npaug rau 220
Elongation (%)
Ntau dua los yog sib npaug rau 40
Ntau dua los yog sib npaug rau 35
Hardness (HRB)
Tsawg dua los yog sib npaug rau 95
Tsawg dua los yog sib npaug rau 90
Ntom ntom (g / cm³)
8.00
8.05

 

Corrosion Kuj​

Huab cua
Kev ua tau ntawm 316L
904L kev ua tau zoo
Marine cua
Zoo tshaj
Zoo tshaj
Sulfuric acid (diluted)
Pluag
Zoo tshaj
Phosphoric acid
Zoo
Zoo tshaj
Chloride Ib puag ncig
Tswj kav
Zoo tshaj
Oxidation thaum kub
Zoo
Tswj kav

Xaus:​

904L feem ntau xaiv rau kev ua yeeb yam, offshore roj platform thiab acidic ib puag ncig qhov chaw 316L yuav swb.

 

​Tus nqi sib piv​

​Khoom Hom​
​Tus lej kwv tij​
​316L​
Hmoov
​904L​
2011

 

Vim li cas 904l kim dua 316l?​

904L muaj ntau npib tsib xee thiab lwm yam alloying ntsiab, ua raw cov khoom siv thiab kev coj tus nqi siab dua.

 

​Tau 904L tau welded yooj yim li 316l?​

904L tuaj yeem welded, tab sis yuav tsum muaj cov txheej txheem tshwj xeeb thiab cov khoom siv ua haujlwm vim nws cov ntsiab lus siab high alloy. 316L yoojyim rau weld nrog cov qauv kev coj ua.

 

​Cov qauv qauv twg npog 316L thiab 904l kav thiab daim hlau?​

 

​316L:​
​Kav Dej:ASTM A312
​Daim Hlau:ASTM A240
​904L:​
​Kav Dej:ASTM B677

​Daim Hlau:ASTM B625

 

​Cov Khoom Siv Gnee ob qho tib si 316L thiab 904L hauv ntau cov qauv cov khoom, suav nrog:​

Welded thiab Seamless 316L Kav
316L daim hlau thiab nplooj ntawv (kub thiab txias dov)
Ceg thiab Accessories 316L
MTC daim ntawv pov thawj thiab cov kev txheeb xyuas thib peb
Qhov ntau thiab tsawg:
Cov Inch txheej (OD) 6 hli - 630 hli, Phab Ntsa Thickness 0.5 mm - 30 hli
Instruments: ASTM, en, JIS, GB, DIN
✅ Cov Kev Kho Mob Nto: Stripping, Polishing, Txhuam Hniav, Daim Iav

Kev ntim khoom: Cov thawv ntoo tsim rau Maritime thauj lossis customized daws teeb meem

info-870-321


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