ASTM B409 Txuj
ASTM B409 specificationnpog UNS N08120, UNS N08890, UNS N08800, UNS N08810, thiab UNS N088113 nyob rau hauv daim ntawv ntawm dov phaj, ntawv, thiab sawb. Alloy UNS N08800 feem ntau yog ua haujlwm hauv kev pabcuam kub txog li 1100℃F (593℃). Alloys UNS N08120, UNS N08810, UNS N08811, thiab UNS N08890 feem ntau yog ua haujlwm nyob rau hauv kev pabcuam kub siab tshaj 1100℃F (593 degree) qhov uas yuav tsum tau muaj kev tiv thaiv rau kev nkag thiab tawg, thiab lawv tau annealed los tsim kev tswj cov nplej loj rau qhov zoo tshaj plaws hauv qhov kub thiab txias.
Qhov txawv ntawm cov qauv tseem ceeb: N08800 vs. N08810 vs. N08811
Thaum sib koom tib lub hauv paus matrix ntawm Nickel (30.0% rau 35.0%) thiab Chromium (19.0% mus rau 23.0%), peb qhov sib txawv no tau sib txawv los ntawm kev tswj hwm microstructural kom ua kom muaj kev ua tau zoo nyob rau hauv qhov tshwj xeeb kub:
- UNS N08800 (Alloy 800):Optimized rau qis - mus rau - nruab nrab kub kev pab mus txog593℃(1100℃F). Nws yog feem ntau muab rau hauv lub zeb -annealed lub xeev kom ntseeg tau tias cov txheej txheem siab tshaj plaws corrosion kuj.
- UNS N08810 (Alloy 800H):Tshwj xeeb engineered rau kev pabcuam kubsiab tshaj 593℃(1100℃F)qhov twg creep{0}}rupture kev ua tau zoo yuav tsum tau. Nws nta cov pa roj carbon monoxide tswj (0.05% txog 0.10%) thiab yog siab -kub tshuaj annealed kom ua tau ib coarse grain loj (ASTM No. 5 los yog coarser).
- UNS N08811 (Alloy 800HT):Ntxiv qhov kev ua tau zoo ntxiv ntawm 800H, txwv kev sib xyaw Aluminium + Titanium cov ntsiab lus rau lub qhov rais nqaim (0.85% mus rau 1.20%) kom ntseeg tau tias qhov tshwj xeeb ntev ntev -lub sij hawm nkag mus rau hauv qhov chaw huab cua mus txog982℃(1800℃F).
Chemical Composition Split (Qhov hnyav%)
| Lub Npe Lub Npe | UNS N08800 (Alloy 800) | UNS N08810 (Alloy 800H) | UNS N08811 Alloy 800HT |
| Nickel (Ni) | 30.0 – 35.0 | 30.0 – 35.0 | 30.0 – 35.0 |
| Chromium (Cr) | 19.0 – 23.0 | 19.0 – 23.0 | 19.0 – 23.0 |
| Hlau (Fe) | 39.5 min (Sib npaug) | 39.5 min (Sib npaug) | 39.5 min (Sib npaug) |
| Cov pa roj carbon (C) | 0.10 max | 0.05 – 0.10 | 0.06 – 0.10 |
| Aluminium (Al) | 0.15 – 0.60 | 0.15 – 0.60 | 0.25 – 0.60 |
| Titanium (Ti) | 0.15 – 0.60 | 0.15 – 0.60 | 0.25 – 0.60 |
| Al + Ti (ua ke) | 0.30 – 1.20 | 0.30 – 1.20 | 0.85 – 1.20 |
SB409 N08800 N08810 N08811 khoom
ASME SB409 specification npog nickel-hlau-chromium alloys (UNS N08800), nickel-hlau-chromium-cobalt- molybdenum alloys (UNS N08810), thiab nickel-hlau-chromium{11}}molybdenum- tooj liab alloys (UNS N08811) nyob rau hauv daim ntawv ntawm kub los yog txias- dov daim hlau, nplooj ntawv, thiab strips.
Kuj Corrosion
Cov no1.4876Cov khoom muaj qhov tshwj xeeb corrosion kuj nyob rau hauv ib puag ncig uas muaj sulfuric acid, hydrochloric acid, thiab phosphoric acid. Lawv kuj tiv taus corrosion los ntawm seawater, siab -kub chav, thiab oxidizing gases.ASTM B409 UAS N08800, N08810, thiab N08811paub txog lawv lub zog tensile siab, zoo weldability, thiab creep kuj zog.
Tiv thaiv kub kub
Ib qho txiaj ntsig tseem ceeb ntawm cov alloys no yog lawv lub peev xwm tiv taus qhov kub thiab txias. Nickel-raws li alloys nyiamSB 409 N08800 Platetuaj yeem ua haujlwm ntawm qhov kub thiab txias mus txog1,100 degree, thaumSB 409 alloy 800htuaj yeem tiv taus qhov kub thiab txias txog li1,200 degree. Cov cua sov tshaj plaws-resistant alloy,SB 409 UNS N08811, tuaj yeem ua haujlwm ntawm qhov kub thiab txias mus txog1,315 degree.
Daim ntawv thov
Cov no siab -kub resistantIncoloy 800 800H 800HTalloys yog siv nyob rau hauv ib tug ntau yam ntawm siab - kub daim ntawv thov xws li roj turbines, boilers, tshav kub exchangers, thiab tso pa system. Lawv kuj tau siv rau hauv kev tsim cov khoom siv tshuaj lom neeg thiab petrochemical, qhov chaw uas lawv yuav tsum tiv taus siab - kub thiab corrosive ib puag ncig.
Hauv kev xaus, ASME SB 409 UNS N08800, N08810, thiab N08811 yog cov zoo heev siab -kub resistant alloys uas muaj tshwj xeeb corrosion kuj thiab muaj peev xwm ua hauj lwm ntawm huab cua kub. Lawv tau siv dav hauv ntau qhov kev lag luam thiab cov ntawv thov uas siab - kev ua haujlwm kub yog qhov tseem ceeb.
