Incoloy 800 Seamless Tube
Alloy 800 (UNS N08800), Alloy 800H (UNS N08810) thiab Alloy 800AT (UNS N08811) yog nickeliron-chromium alloys tsim los tiv thaiv oxidation thiab carburization ntawm qhov kub siab txog 1900 degree F. Cov ntsiab lus nickel siab, 32%, resistant ob leeg rau chloride kev nyuaj siab corrosion cracking thiab embrittlement los ntawm nag lossis daus ntawm sigma theem.
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Alloy 800 (UNS N08800), Alloy 800H (UNS N08810) thiab Alloy 800AT (UNS N08811) yog nickeliron-chromium alloys tsim los tiv thaiv oxidation thiab carburization ntawm qhov kub siab txog 1900 degree F. nickel cov ntsiab lus, 32%, ua rau cov alloys resistant ob leeg rau chloride kev nyuaj siab corrosion cracking thiab embrittlement los ntawm nag lossis daus ntawm sigma theem. General corrosion kuj zoo heev. Nyob rau hauv cov tshuaj annealed mob, Alloys 800H thiab 800AT muaj superior creep thiab kev nyuaj siab rupture zog. Tag nrho peb cov qauv ntawm cov txheej txheem Alloy 800 tau raug pom zoo ua cov khoom siv ntawm kev tsim kho raws li ASME Boiler thiab Pressure Valve Code, Tshooj I-Power Boilers, Tshooj III-Nuclear Vessels, thiab Tshooj VIII-Unfired Pressure Vessels. Alloys 800, Alloy 800H thiab Alloy 800AT yog zoo tib yam tshwj tsis yog rau cov qib siab ntawm carbon (0.05 txog 0.1%) hauv Alloy 800H, thiab ntxiv txog li 1% txhuas + titanium hauv Alloy 800AT. Alloy 800 feem ntau yog siv rau hauv qhov kev pabcuam no ntawm qhov kub thiab txias txog li 1100 degree F (593 degree). Alloy 800H thiab Alloy 800AT feem ntau yog siv saum toj no kwv yees li 1100 degree F (593 degree) qhov twg yuav tsum tau tiv thaiv nkag thiab tawg.
Alloys 800H® thiab 800HT® yog hlau-nickel-chromium cov khoom siv ntxiv zog alloys nrog cov tshuaj nominal ntawm 42% hlau, 34% npib tsib xee, thiab 22% chromium. Ob qib no yog qhov hloov pauv ntawm qib 800 thiab raug xa mus los ntawm cov npe lag luam Incoloy® 800H thiab Incoloy® 800HT thiab cov npe thoob ntiaj teb UNS N08810 thiab N08811, feem. 800H® thiab 800HT® qhia qhov kub-kub oxidation thiab carburization tsis kam ntawm Alloy 800 tab sis muaj kev txhim kho creep thiab kev ntxhov siab rupture zog.
Lub hauv paus muaj pes tsawg leeg ntawm 800H/HT® zoo ib yam rau niam txiv Alloy 800. Txawm li cas los xij, nyob rau hauv ob qho tib si 800H® thiab 800HT®, cov qib carbon, aluminium, thiab titanium raug hloov kho kom txhim kho creep tsis kam. Lub hauv paus 800 qib muaj cov pa roj carbon ntau ntawm 0 - 0.10%, thaum 800H® nce qib carbon tsawg kawg nkaus rau 0.05%. Ib yam li ntawd, lub hauv paus 800 qib muaj qhov sib xyaw ua ke ntawm txhuas thiab titanium cov ntsiab lus ntawm 0.
UNS N08800 Pipes, Incoloy 800 Chemical Composition:
| UNS npe | N08800 | N08810 | N08811 |
| Incoloy alloys | 800 | 800H | 800 HT |
| Nickel | 30.0 – 35.0 | 30.0 – 35.0 | 30.0 – 35.0 |
| Chromium | 19.0 – 23.0 | 19.0 – 23.0 | 19.0 – 23.0 |
| Hlau | 3 9,5mn. | 3 9,5mn | 3 9,5mn. |
| Cov pa roj carbon | 0.10 max | 0.05 – 0.10 | 0.06 – 0.10 |
| Aluminium | 0.15 – 0.60 | 0.15 – 0.60 | 0.25 – 0.60 |
| Titanium | 0.15 – 0.60 | 0.15 – 0.60 | 0.25 – 0.60 |
| Aluminium +
Titanium |
0.30 – 1.20 | 0.30 – 1.20 | 0.85 – 1.20 |
| ASTM Grain Loj | Tsis Qhia | 5 los yog Coarser | 5 lub coaser |
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