Puas yog 316 tib yam li 1.4404?

Taw qhia rau 1.4404 Stainless Hlau

1.4404 stainless hlau, feem ntau hu ua 316L lossis UNS S31603, yog qhov qis -carbon variant ntawm tus qauv 316 molybdenum-alloyed austenitic stainless hlau. Nws txo qis cov ntsiab lus carbon (tsawg dua lossis sib npaug li 0.03%) txhim kho kev tiv thaiv kev sib txhuam hauv cov txheej txheem raws li -welded, ua rau nws qhov kev xaiv zoo tshaj plaws rau cov khoom siv welded hnyav, cov khoom siv tshuaj, cov khoom siv tshuaj, thiab cov ntawv thov marine qhov twg ob qho tib si corrosion kuj thiab weld kev ncaj ncees tseem ceeb heev. Raws li ib qho ntawm ntau yam thiab dav siv stainless hlau, nws muaj qhov sib npaug zoo ntawm corrosion kuj, formability, thiab weldability.

 

Qib sib npaug ntawm 1.4404 Stainless Hlau

Txuj	Qib
EN European	1.4404 / X2CrNiMo17-12-2
ASTM / UNS	316L / S31603
JIS	SUS 316L
Suav GB	022Cr17Ni12Mo2
Lub Npe	316L

Muaj cov ntaub ntawv: seamless & welded hlab, daim hlau, nplooj ntawv, puag ncig tuav, forgings, profiles.

 

Tshuaj muaj pes tsawg leeg ntawm 1.4404 Stainless hlau

Element	C	Si	Mn	P	S	Cr	Ni	Mo	N
Cov ntsiab lus	Tsawg dua lossis sib npaug li 0.030	Tsawg dua lossis sib npaug li 1.00	Tsawg dua lossis sib npaug li 2.00	Tsawg dua lossis sib npaug li 0.045	Tsawg dua lossis sib npaug li 0.030	16.5‑18.5	10.0‑13.0	2.00‑2.50	Tsawg dua lossis sib npaug li 0.10

Cov pa roj carbon tsawg (tsawg dua lossis sib npaug li 0.03%) txo qis chromium carbide nag lossis daus tom qab vuam, muab kev tiv thaiv zoo heev intergranular tsis muaj kev kho cua sov tom qab vuam. Molybdenum txhim khu kev tiv thaiv rau chloride pitting & crevice corrosion.

 

Mechanical Properties (Annealed Condition, Room Temperature) Ntawm 1.4404 Stainless Hlau

Khoom	Tus nqi
Tensile zog Rm	500-700 MPa
0.2% Offset Yield zog Rp0.2	Ntau tshaj lossis sib npaug li 200 MPa
Elongation A	Ntau dua lossis sib npaug li 40%
Brinell Hardness HBW	Tsawg dua lossis sib npaug li 215

 

Lub cev muaj zog (20 degree) Ntawm 1.4404 Stainless Hlau

Yam khoom	Parameter
Qhov ntom	7.90 g / cm³
Modulus ntawm Elasticity	200 GPa
Coefficient ntawm Linear Expansion	15.9 × 10⁻⁶ /℃(20-100 degree)
Thermal conductivity	16.3 W/(m·K)
Tshwj xeeb kub muaj peev xwm	500 J / (kg· degree)
Melting ntau	1370-1400 degree
Microstructure	Austenitic, non-magnetic (tsis muaj zog hlau nplaum tom qab txias txias)
Max nruam kev pab kub	Txog li 550 degree

 

Cov yam ntxwv tseem ceeb ntawm 1.4404 / 316L Stainless Hlau

Dab tsi yog qhov zoo ntawm vuam kev ua tau zoo ntawm 1.4404 stainless hlau?
Nws nta superior weldability thiab zam welding sensitization teeb meem. Nws ultra- cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.03%) zoo heev inhibits chromium carbide nag lossis daus thaum vuam, tiv thaiv intergranular corrosion hauv tshav kub- thaj tsam cuam tshuam. Tsis muaj kev tshaj tawm -weld kev kho cua sov yuav tsum tau ua, ua kom yooj yim thiab ua kom ruaj khov corrosion tom qab vuam.

 

1.4404 corrosion kuj ua tau li cas hauv chloride ib puag ncig?

1.4404 muaj kev tiv thaiv zoo heev rau hauv zos corrosion. Qhov sib ntxiv ntawm 2-2.5% molybdenum lub ntsiab lus tseem ceeb txhim kho nws cov kev tiv thaiv rau pitting corrosion thiab crevice corrosion.1.4404 chloride corrosion kuj yog deb tshaj li cov pa 304 thiab 304L stainless hlau, yoog rau cov dej qab ntsev thiab ntub dej corrosive ib puag ncig.

 

Puas yog 1.4404 cov khoom tsim nyog rau cov tshuaj acid ua haujlwm?

Yog lawm, 1.4404 muaj cov tshuaj tiv thaiv kab mob txhim khu kev qha.1.4404 muab cov tshuaj tiv thaiv zoo tshaj - corrosion kuj nyob rau hauv sulfuric acid, phosphoric acid, acetic acid thiab lwm yam acidic media, ua tau raws li cov kev pab cuam ntawm ntau yam khoom siv tshuaj thiab cov kav dej.

 

Yuav ua li cas txog qhov yooj yim ntawm kev siv tshuab thiab qis - qhov kub thiab txias ntawm 1.4404?

1.4404 muaj qhov zoo tshaj plaws formability thiab toughness.1.4404 khaws cov ductility zoo heev thiab cuam tshuam tsis kam ntawm austenitic stainless hlau qib. Txawm tias nyob rau hauv ultra- qhov kub thiab txias txias, 1.4404 tuaj yeem tswj cov khoom siv kho tshuab ruaj khov yam tsis muaj qhov tsis ua haujlwm.

 

Daim ntawv thov ntawm 1.4404 / 316L Stainless hlau

1.Chemical & Pharmaceutical:

Tank, reactors, piping, thiab cov hlab ntsha rau corrosive xov xwm yuav tsum tau siab purity.

2. Marine & Coastal:

Nkoj fittings, offshore platforms, thiab cov khoom uas raug dej hiav txwv los yog ntsev tsuag.

3. Kev Kho Mob & Khoom Noj Khoom Noj:

Cov cuab yeej phais, kev cog qoob loo, thiab cov khoom siv uas yuav tsum tau ua kom tsis muaj menyuam thiab ua kom huv.

4. Architectural:

High-kawg façades, railings, thiab cov qauv nyob rau hauv cov pa phem los yog ntug hiav txwv cua.

5.Pulp & Ntawv:

Cov cuab yeej ua haujlwm hauv cov tshuaj bleaching thiab tshuaj rov qab.

6. Textile Kev Lag Luam:

Cov khoom siv dyeing thiab bleaching ua haujlwm.

Supplier Taw Qhia Ntawm 1.4404 / 316L Stainless Hlau

GNEE muab tag nrho cov khoom xa tawm-taw qhia 1.4404 (X2CrNiMo17-12-2 / 316L) austenitic stainless-steel cov khoom ua raws li EN, DIN thiab ASTM cov qauv. Kev txiav txim ntau, kev txiav txim me me thiab cov qauv xa tuaj yog txhua yam muaj.

Cov khoom tseem ceeb export pawg muaj xws li:

1.Sheets, Phaj & Coils: Kub-kuav los tiag / txias-kuav los tiag, nruab nrab-tuab daim hlau, steel coils thiab slit strips. Nto tiav: 2B, NO.1 pickled, polished. Kev pabcuam txiav-rau-size muaj.

2.Bars & Profiles: Kub-dov puag ncig tuav, txias-drawn ci tuav, square tuav, tiaj tuav thiab hex tuav, muaj nyob rau hauv dub, ntxhib-tig los yog polished nto.

3.Pipes & Tubes: Seamless tubes, welded tubes, polished tubes thiab pickled tubes rau txheej txheem piping thiab tshav kub pauv kev pab cuam.

4.Forgings & Fittings: Forging

 

Hu rau tam sim no

FAQ

Thaum twg kuv yuav tsum xaiv 316L (1.4404) dhau 316 (1.4401)?
Xaiv 316L thaum cov khoom yuav raug welded hnyav heev thiab tsis tuaj yeem xa mus rau -weld thaum tshav kub kub kho, lossis thaum twg nws yuav siv rau hauv qhov kub thiab txias (450-850℃). Qhov no suav nrog cov tuab -section welds, ntau- kis welds, lossis cov ntawv thov uas cov qauv welded yuav raug rau qhov chaw corrosive. 316L kuj nyiam rau qhov hnyav corrosive ib puag ncig uas qhov siab tshaj plaws corrosion yuav tsum tau, thiab rau cov ntawv thov kev pom zoo los ntawm cov hlab ntsha siab. Rau cov ntawv thov uas muaj qhov vuam me me los yog qhov chaw muaj zog ambient siab ntawm qhov kub siab yog xav tau, tus qauv 316 tej zaum yuav haum thiab pheej yig dua me ntsis.

 

Puas yog 316L muaj lub zog siv tshuab qis dua 316 vim nws cov ntsiab lus qis dua?
In practice, the difference in room-temperature mechanical properties between annealed 316 and 316L is minimal and often within specification overlap. Both grades meet similar minimum strength requirements (200 MPa yield for 316L, 205 MPa for 316). The primary advantage of 316L is its corrosion resistance after welding or high-temperature exposure, not a reduction in ambient strength. At elevated temperatures (>500℃), 316 tej zaum yuav muaj zog nkag siab me ntsis vim nws cov ntsiab lus carbon ntau dua, uas yog vim li cas 316H (siab-} carbon)) tau teev tseg rau siab - kev pabcuam kub.

 

Dab tsi yog qhov kev txiav txim siab vuam rau 316L?
316L muaj qhov zoo tshaj plaws weldability siv txhua txoj hauv kev xws li TIG, MIG, SMAW, thiab SAW. Muab cov hlau sib xyaw ua ke (ER316L rau TIG/MIG, E316L-16 rau SMAW) raug pom zoo kom muaj kev tiv thaiv corrosion. Cov ntsiab lus tsis tshua muaj carbon tshem tawm qhov xav tau rau kev tshaj tawm -weld kho cua sov, txawm rau cov ntu tuab. Kev pom zoo cua sov yog feem ntau 0.5-2.0 kJ / mm, nrog interpass kub hauv qab 150 degree. Shielding gas (argon los yog argon nrog 2-5% nitrogen) tiv thaiv lub pas dej ua ke. Tom qab-weld tu thiab pickling / passivation yog pom zoo kom rov qab txheej passive thiab xyuas kom zoo corrosion kuj.