ASTM A36 VS.6 VS 316 Stainless Hlau: Dab tsi yog qhov sib txawv?
Apr 11, 2025
Tso lus
ASTM A36 Carbon Steel vs. 316 Stainless Hlau: Txawv Rau Qhov Tseem Ceeb
1. Cov Khoom Siv Hluav Taws Xob & Cov Ntawv Sib Tw
ASTM A36
Ntaus: Cov qauv hlau tsis muaj roj (cov pa roj carbon ntau dua lossis sib npaug rau 0. 25%), tsis-alloy steel.
316 Stainless Hlau
Ntaus: Austenitic stainless hlau (qib: 06CR17NI12MO2), Alloy Steel.
2. Cov Cuab Yeej Siv Me Nyuam
| Kev sib piv | ASTM A36 Carbon Steel | 316 Stainless Hlau |
|---|---|---|
| Corrosion Kuj | - Tsis muaj qhov xam tau rau corrosion tsis kam; Muaj kev ntxim siab rau xeb nyob rau hauv noo, acidic, lossis ntsev dej qab. - Yuav tsum muaj cov tshuaj pleev xim tiv thaiv tiv thaiv (piv txwv li, galvanization, pleev xim) lossis kev tiv thaiv Cathodic. |
- Zoo heev Corrosion Kuj, tshwj xeeb tshaj yog rau Chlorides (piv txwv li, dej hiav txwv, ntsev cov kua, muaj brines). - Molybdenum (mo) txhim kho kom pitting thiab crevice corrosion; Tsis muaj kev kho mob ntxiv rau kev kho mob corrosion. |
| Cov Khoom Siv Neeg Kho Tshuab | - Lub zog: tawm los lub zog ntau dua los yog sib npaug ntawm 250 MPa, tensile lub zog ntau dua lossis sib npaug nrog 400 MPA. - Deventity: Elongation zoo (ntau dua los yog sib npaug thiab siv tau yooj yim thiab muaj kev tswj hwm kom tsis txhob muaj cov qoob loo ua kom sov). |
- Lub zog: qis tawm lub zog (ntau dua los yog sib npaug rau 205 MPa) tab sis ntau dua lossis sib npaug nrog 515 MPA). - Ductility & Taus: Zoo heev elongation (ntau dua los yog sib npaug nrog 40%) thiab kev cuam tshuam tsis kub (-196}}}}}}}}} degree); Ua haujlwm hnyav ua haujlwm thaum lub sij hawm txias (piv txwv li, nce hardness tom qab khoov). |
| Kub tiv thaiv | - Cov Temp siab: Pab tau txog li ~ 300-400 degree; nquag mus rau oxidation (xeb) thiab lub zog poob ntawm kev nce siab kub. - Tsawg temp: txo cov tawv me hauv qab -20 degree, pheej hmoo ntawm brittle baciture. |
- Cov Temp High: ruaj khov txog 800 degree vim yog kev tiv thaiv cov roj ntsha oxide (cr₂o₃) zaj duab xis; oxidation zoo ua tsis kam. - Tsawg temp: tswj kev nruj me ntsis rau -196 degree (piv txwv li, tsis muaj kua ntshauv ua kua), tsis muaj kev phom sij ua kua rau. |
| Ntawj thiab Nyhav | Ntom ntom: ~ 7.85 g \/ cm³; Qhov hnyav sib zog txaus siab | Qhov ceev faj: ~ 7.98 g \/ cm³ (me ntsis hnyav dua cov hlau hlau, ~ 1.6% qhov sib txawv; tsis saib xyuas cov ntawv thov feem ntau). |
| Tus nqi | Tus nqi qis: Raw Khoom Nqe yog ~ 1\/5 txog 1\/3 ntawm 316 Stainless hlau; Qhov zoo tshaj plaws rau cov phiaj xwm raug nqi. | Tus nqi siab: Nickel thiab Molybdenum ua nws 5-8 zaug kim dua li A36 cov hlau; Nqe kev cuam tshuam los ntawm kev ua lag luam hlau. |
3. Cov Kev Siv Raug Raug
ASTM A36 Carbon Steel Siv rooj plaub ntug
Cov qauv dav dav: Lub Tsev Ua Si hauv, txuas hniav, cov nqaj hlau, nkhaus, thiab cov khoom tsis yog corrosive Machinery.
Tsawg-corrosion ib puag ncig: Cov qauv sab hauv tsev, cov phiaj xwm nyob qhov twg, piv txwv li, pleev xim) yog qhov ua tau thiab nqi yog qhov tseem ceeb.
316 stainless hlau siv rooj plaub
Txoj kev ua kom muaj kev nyuaj siab ntawm cov pa hluav taws xob (piv txwv li, tshuaj lom neeg (salts), khoom noj khoom haus (resistant rau cov neeg sawv cev thiab caporide-ntxias pitting).
Huab cua sov: kub-kub-kub ua kom sov (txog 800 degree) thiab cryogenic cia (piv txwv li, lng tso tsheb hlau luam ntawm -162 degree).
4. Cov kev txiav txim siab tseem ceeb rau cov neeg yuav khoom
Ib puag ncig cov xwm txheej:
Xaiv A36 hlau rau qhuav, tsis-corrosive ib puag ncig kom txuag tau tus nqi.
Xaiv rau 316 stainless hlau yog tias raug noo noo, ntsev, tshuaj lom neeg, lossis tu tshuaj, nrog cov tshuaj tua kab ntxwv).
Cov Kev Ntsuas Kub:
A36 yog qhov tsim nyog rau kev kub kub (-20 degree rau 300 degree).
316 yog ib qho tsim nyog rau cov ntawv thov tshaj li 400 degree lossis hauv qab {{-50 degree, uas muaj zog thiab tawv yog qhov tseem ceeb.
Tus nqi kav nqi vs. pib tus nqi:
A36 yuav tsum muaj kev tu tsev ua ke (pleev xim, xeb tshem tawm), nce cov nqi ntev.
316 muaj cov nqi nce siab dua tab sis muaj kev saib xyuas tsawg dua thiab siv sijhawm ntev dua, zoo tagnrho rau kev ua haujlwm tas mus li lossis nyuaj rau kev nkag mus.
Cov Qauv Kev Lag Luam:
A36 ua raws cov qauv tsim qauv kws kho mob (piv txwv li AVTM A36 rau cov tsev \/ txuas hniav).
316 Yuav tsum ua raws li cov lej lag luam nruj me me (piv txwv li, ASME BPVC rau cov nkoj siab, FDA rau kev sib cuag zaub mov) hauv cov chaw muaj khoom noj lossis huv si.
5. Xaus: Yuav ua li cas xaiv?
Xaiv Astm A36 rau:
Tus nqi qis, tsis yog-corrosive, nruab nrab kev siv kub (piv txwv li, kev tsim kho dav dav, yooj yim machinery).
Xaiv 316 stainless hlau rau:
✅ Corrosive, High \/ qis-kub, lossis ib puag ncig kev saib xyuas (piv txwv li, cov tub rog, tshuaj lom neeg).
Xa kev nug