317L stainless hlauyog ib qho qis-carbon, siab-molybdenum austenitic stainless hlau. Raws li qhov zoo tshaj - qib hloov mus rau 316L, nws muab kev tiv thaiv zoo rau pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg, tshwj xeeb tshaj yog nyob rau hauv acidic thiab chloride- muaj cov xov xwm.
Kab lus no qhia txog 317L stainless hlau, piav qhia txog nws cov tshuaj muaj pes tsawg leeg, lub cev thiab cov khoom siv kho tshuab, corrosion thiab siab -kev ua haujlwm kub, cov khoom sib npaug thoob ntiaj teb, thiab cov nqi lag luam tam sim no rau cov khoom siv.
317L Stainless hlau yog dab tsi?
317L stainless hlau (UNS S31703) yog qhov qis - carbon version ntawm tus qauv 317 alloy. Qhov "L" qhia txog nws cov ntsiab lus txo qis (0.03% siab tshaj plaws), uas ua rau nws ua tau zoo rau kev tiv thaiv intergranular corrosion tom qab vuam lossis raug kub.
Qhov kev hloov kho no khaws cov kev tiv thaiv corrosion zoo tshaj ntawm qib 317, ua rau nws qhov kev xaiv zoo tshaj plaws rau cov khoom siv siv hauv cov tshuaj lom neeg, petrochemical, thiab marine daim ntaub ntawv.
317L Stainless hlauTshuaj muaj pes tsawg leeg
317L stainless hlau muaj pes tsawg leeg thiab lawv cov kev sib txawv yog cov ntsiab lus hauv qab no.
Standard Chemical Composition ntawm 317L Stainless hlau
|
Element |
Cov ntsiab lus (%) |
Cov txiaj ntsig |
|
Cov pa roj carbon (C). |
Tsawg dua lossis sib npaug li 0.03% |
Qib "L" qhia txog cov pa roj carbon tsawg, txo qis carbide nag lossis daus thaum vuam, yog li khaws cia corrosion kuj. |
|
Chromium (Cr). |
18.0 - 20.0 |
Ua ib txheej oxide passive rau kev txhim kho corrosion thiab oxidation tsis kam. |
|
Nickel (Ni). |
11.0 - 15.0 |
Stabilizes austenitic microstructure, txhim kho ductility, thiab tiv thaiv kom txhob acids. |
|
Molybdenum (Mo). |
3.0 - 4.0 |
Qhov tseem ceeb sib txawv. Ua kom muaj zog tiv thaiv pitting thiab crevice corrosion nyob rau hauv ib puag ncig chloride. |
|
Manganese (Mn). |
Tsawg dua lossis sib npaug li 2.0 |
Pab hauv deoxidation thaum steelmaking thiab txhim kho kev ua haujlwm kub. |
|
Silicon (Si). |
Tsawg dua lossis sib npaug li 0.75 |
Pab txhawb oxidation tsis kam ntawm qhov kub thiab txias. |
|
Phosphorus (P). |
Tsawg dua lossis sib npaug li 0.045 |
Khaws qis kom tsis txhob embrittlement. |
|
Sulfur (S). |
Tsawg dua lossis sib npaug li 0.03 |
Khaws qis los txhim kho corrosion kuj thiab formability. |
|
Nitrogen (N). |
Tsawg dua lossis sib npaug li 0.10 |
Muaj peev xwm ntxiv los txhim kho lub zog. |
|
Hlau (Fe). |
Tshuav |
Base hlau. |
317LStainless hlau Properties
317L stainless hlau muaj lub cev zoo sib xws nrog rau lwm cov qib austenitic tab sis muaj kev txhim kho kev siv zog.
Stainless hlau 317LLub cev muaj zog:
Qhov ceev: 7.98 g / cm³
Melting Point: ~ 1370-1400 degree
Modulus ntawm Elasticity: 200 GPa
Thermal Expansion: 15.9 μm / m ·℃(20-100 degree)
Thermal conductivity: 14.2 W / m·K (100 degree)
Hluav taws xob tiv thaiv: 0.74 μΩ·m
Stainless hlau 317LMechanical Properties:
|
Khoom |
Metric nqi |
Imperial nqi |
|
Tensile zog |
515 - 595 MPa |
75, 000 - 86, 300 psi |
|
Yield zog (0.2% Offset) |
205 - 260 MPa |
30, 000 - 37, 700 psi |
|
Elongation ntawm Break |
40% - 55% |
40% - 55% |
|
Hardness (Rockwell B) |
85 max |
85 max |
|
Modulus ntawm Elasticity |
200 GPa |
29,000 ksg |
Corrosion Resistance
317L muaj qhov zoo tshaj plaws dav dav thiab hauv cheeb tsam corrosion kuj:
Pitting & Crevice Corrosion: Nws cov ntsiab lus Mo siab muab kev tiv thaiv zoo, ua rau nws tsim nyog rau ib puag ncig uas muaj chlorides, phosphates, thiab lwm yam halides.
Intergranular Corrosion: Cov ntsiab lus tsis tshua muaj carbon ua rau nws tiv thaiv kev nkag siab thiab tom qab intergranular nres nyob rau hauv raws li -welded mob.
Acid Resistance: Nws pom zoo ua haujlwm rau ntau yam organic thiab inorganic acids, suav nrog sulfuric acid nyob rau hauv nruab nrab concentrations.
High -Tsub Ua Haujlwm
Thaum feem ntau optimized rau corrosion kuj, 317L tuav lub zog zoo ntawm qhov kub thiab txias thiab muaj cov oxidation zoo heev txog li ntawm 870 degree.
Nws txoj kev nkag siab siab thiab kev ntxhov siab- lub zog tawg ua rau nws haum rau cov ntawv thov xws li cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob hauv cov huab cua corrosive.
317LStainless hlau sib npaug
Thaum nrhiav khoom thoob ntiaj teb, nws yog ib qho tseem ceeb kom paub txog 317L qhov sib npaug ntawm qib sib npaug raws li cov qauv sib txawv hauv teb chaws. Qhov no ua kom cov khoom sib xws ntawm cov khoom siv thoob ntiaj teb.
Kev sib npaug thoob ntiaj teb rau 317L (UNS S31703)
|
Txuj |
Kev Cai Sib Tw |
|
UNS |
S31703 |
|
ASTM / AISI |
317L |
|
EN (Tebchaws Europe) |
X2CrNiMo18-15-4 / 1.4438 |
|
JIS (Nyiv) |
SUS 317L |
|
GB (Tuam Tshoj) |
00Cr19Ni13Mo3 |
|
Common ASTM Cov Qauv Khoom Muag |
A240 (Plate / Sheet / Sawb), A312 (Pib), A182 (Fittings), A213 (Tube) |
Lus Cim Tseem Ceeb:Thaum cov qhab nia no feem ntau suav hais tias sib npaug, cov ntawv thov tseem ceeb yuav tsum tau ua pov thawj ntawm cov khoom siv tshuaj lom neeg thiab cov cuab yeej cuab tam txwv tsis pub muaj feem cuam tshuam txog kev yuav khoom.
317LStainless hlauPmov
Tus nqi rau 317L stainless hlau sib txawv raws li daim ntawv, qhov ntau, kev ua lag luam, thiab cov xwm txheej hauv cheeb tsam, nrog kev hloov pauv los ntawm cov nqi raw khoom xws li molybdenum.
Raws li xyoo 2025, 317L steel seamless kav thiab raj feem ntau yog li ntawm $ 6 mus rau $ 30 ib kg, nyob ntawm txoj kab uas hla thiab phab ntsa thickness, nrog rau cov nqi siab dua rau qhov ntau thiab tsawg vim fabrication complexity.
317L stainless hlau fittings, xws li lub luj tshib thiab tees, yog tus nqi zoo sib xws ntawm $ 7-35 ib kg, qhia txog kev tsim khoom ntxiv.
Cov nplooj ntawv thiab daim hlau, feem ntau siv rau hauv kev tsim, poob ntawm $ 4 thiab $ 10 ib kg, nrog cov ntsuas nyias uas ua rau cov nqi them rau qhov tseeb dov.
Cov nuj nqis no yog qhov qhia txog qhov nruab nrab hauv ntiaj teb; Hauv Suav teb, kev sib tw ntau lawm tuaj yeem txo tus nqi los ntawm 10-20% piv rau Western kev lag luam.
Raws li tus neeg muag khoom, peb pom zoo kom tau txais cov nqe lus tam sim no, raws li tus nqi raug cuam tshuam nrog cov khoom lag luam thiab cov khoom siv sib txuas.
Rau cov lus hais meej meej ntawm 317L stainless hlau kav, raj, fittings, lossis daim hlau rau koj qhov project, thov koj xav tiv tauj peb.tiv tauj peb pab pawg muag khoom.
