SS321 vs SS316: Dab tsi yog qhov sib txawv?
Tso lus
Tsab ntawv no ntsuas qhov tseem ceeb ntawm 321 stainless hlau thiab 316 stainless hlau los ntawm qhov ntev ntawm cov tshuaj muaj pes tsawg leeg, kev lag luam daim ntawv thov, muab cov ntaub ntawv siv rau cov khoom xaiv.
SS321 vs SS316 Stainless Hlau: Tshuaj lom neeg muaj pes tsawg leeg
| Ib feem | SS321 Stainless Hlau | SS316 Stainless Hlau |
|---|---|---|
| Chromium (cr) | 18% | 16–18% |
| Npib tsib caug (ni) | 9% | 10–14% |
| Titanium (ti) | Ntau dua los yog sib npaug rau 5 × cov ntsiab lus carbon (piv txwv li, 0. 3 - 0. 8%) | - |
| Molybdenum (mo) | - | 2–3% |
| Carbon (c) | Tsawg dua los yog sib npaug rau 0. 08% | Tsawg dua los yog sib npaug rau {{{{0}}}}. 08% (tsawg dua los yog sib npaug rau 0.03% rau SS316L) |
S321 vs SS316 Stainless hlau: Corrosion Kuj
SS321 Corrosion Kuj
Lub zog: titanium ruaj khov muab qhov tshwj xeeb corrosion corrosion (450-800 degree), ua rau nws zoo tagnrho rau ntau cov vuam cov ntawv thov.
Kev txwv: tsis muaj zog pitting tsis kam nyob rau hauv chloride ib puag ncig (piv txwv li, dej hiav txwv, ntsev tsuag) piv rau SS316.
SS316 corrosion tsis kam
Cov zog: Molybdenum sib ntxiv hauv acidic, alkaline ib puag ncig (xws li chloride ib puag ncig (pren ntau dua los yog sib npaug ntawm 25) tshaj li SS321 (Pren ≈19).
Limitations: Prolonged exposure to high temperatures (>800 degree) yuav ua rau embrittlement vim sigma (σ) theem nag lossis daus.
SS321 vs SS316 Stainless Hlau: Kev ua yeeb yam kub
SS321 High-Qhov Zoo Tshaj
Ntau yam: Kev siv txuas ntxiv mus txog 800-900 degree, nrog lub sij hawm luv luv txog 925 degree.
Cov ntawv thov: Aircraft cav tso pa, thiab cua sov cov thawv ua kom sov lossis cua sov.
SS316 qhov kev txwv kub-kub
Pom zoo kub: tsawg dua los yog sib npaug rau 800 degree; Molybdenum tsiv teb yuav txo corrosion tsis kam ntawm ntau dua qhov kub.
Kev xaiv: rau huab cua sov heev, xav txog 347 stainless hlau (nb-stabilized) lossis npib tsib xee-raws li alloys.
SS321 VS SS316 Stainless Hlau: Machining & Vuam Kev Ua Haujlwm
SS321 Weldability
Titanium minimizes chromium carbide (cr luc₆) nag lossis daus, tshem tawm cov kev xav tau ntawm Weld annealing thiab txhawb Ntau Vuam.
SS316 Weldability
Yuav tsum tau tswj tshav kub tshav kub los tiv thaiv cov kev tawg kub; Pom zoo kom siv Molybdenum-muaj cov muab tub lim hlau (piv txwv li, ER316L) rau kev sib xws.
