1. EN 10297 X2CrNiMoN17-13-3 yog dab tsi?
Teb:
TS EN 10297 X2CrNiMoN17-13-3low-carbon, nitrogen- txhim kho austenitic stainless hlau seamless rajstandardized raws li EN 10297. Nws combines corrosion kuj nrog siab mechanical zog.
Lub ntsiab lus tseem ceeb:17% Cr, 13% Ni, 3% Mo, thiab nitrogen (N) rau lub zog stabilization.
Qib sib npaug:UNS S31653 (316LN), DIN 1.4429.
Feature tseem ceeb:Nitrogen ntxiv txhim kho pitting tsis kam thiab tawm los lub zog thaum tswj kev weldability.
2. Cov khoom siv tshuab yog dab tsi?
Teb (kev kho mob annealed):
Tensile zog:550-750 MPa
Yield zog (0.2% offset):Ntau dua lossis sib npaug li 250 MPa (siab tshaj tus qauv 316L vim N)
Elongation:Ntau dua lossis sib npaug li 40%
Hardness:Tsawg dua lossis sib npaug li 220 HB
Nco tseg:Nitrogen txhim kho lub zog yam tsis muaj kev cuam tshuam ductility, zoo tagnrho rau cov qauv siv.
3. Nws txawv li cas ntawm X5CrNiMo17-12-2 (316L)?
Teb:
Nitrogen Advantage:X2CrNiMoN17-13-3 muajsiab yield zog(250+ MPa vs . 200 MPa) thiab zoo dua rau pitting/crevice corrosion.
Cov pa roj carbon tsawg:Ob qib tiv thaiv rhiab heev, tab sis 316LN nyiam rautuab welded seemlos yog kev pabcuam cryogenic.
Tus nqi:Me ntsis siab dua vim nitrogen alloying.
4. Cov txheej txheem tsim khoom tseem ceeb yog dab tsi?
Teb:
Vuam:Siv cov- cua sov- cov tswv yim qis (TIG/PAW) nrog cov khoom ntim xws li ER316L lossis ER316LN. Tsis muaj kev tshaj tawm -weld kev kho cua sov xav tau.
Machining:Lub zog siab dua yuav tsum muaj cov cuab yeej ntse dua thiab qeeb qeeb dua li 316L.
Kev tiv thaiv corrosion:Tsis txhob ncua ntev mus rau 600-900℃los tiv thaiv σ-theem tsim.
5. Qhov qhab nia no feem ntau siv rau qhov twg?
Teb:
Offshore / Roj & Roj:Subsea pipelines, risers (tiv chloride-induced stress corrosion cracking).
Kev ua tshuaj lom neeg:Reactors rau sulfuric / nitric acid ib puag ncig.
Cryogenics:LNG cia tso tsheb hlau luam ( khaws cov tawv nqaij ntawm qhov kub thiab txias).
Nuclear:Coolant systems thiab ntim khoom.
