Incoloy 825 yog ib npib tsib xee-}}} chromium alloy nrog ntxiv ntawm Molybdenum thiab tooj liab, ruaj khov nrog titanium. Nws yog tsim los tiv thaiv corrosion nyob rau hauv ntau qhov chaw loj, suav nrog cov uas muaj cov acids, pitting, crevice corrosion, thiab kev nyuaj siab} Corrosion nrib pleb.
Nws cov yam ntxwv tseem ceeb ua rau nws xaiv tau zoo rau cov ntawv thov:
Kev tiv thaiv zoo heev rau kev txo qhov chaw:Vim nws cov ntsiab lus npib tsib xee (~ 40%).
Zoo tsis kam rau oxidizing ib puag ncig:Muab los ntawm nws cov ntsiab lus chromium (~ 21.5%).
Zoo tshaj qhov kev ntxhov siab - corrosion tsoo (SCC):Ib qho tsis ua hauj lwm hom rau cov hlau stainless hauv chloride - kev nplua nuj ib puag ncig.
Siab ua rau cov sulphoric thiab phosphoric acids:Txhim kho los ntawm molybdenum thiab tooj liab ntxiv.
Seamless tubing, tsim los ntawm cov txheej txheem xws li extrusion lossis bilgering microstructure, thiab kev ua tau zoo dua nyob rau hauv high {0} Daim ntaub ntawv corrosive piv rau worred tubing.
Cov Khoom Tseem Ceeb thiab Tshuaj Muaj Kab
1. Tshuaj lom neeg sib xyaw (ASTM B423 / ASME SB423)
Tus qauv ntsuas rau Incoloy 825 yog raws li hauv qab no:
| Lub ntsiab | Nyhav% (raug) | ASTM B423 Qhov Yuav Tsum Tau |
|---|---|---|
| Npib tsib caug (ni) | 38.0 - 46.0 | 38.0 - 46.0 |
| Chromium (cr) | 19.5 - 23.5 | 19.5 - 23.5 |
| Hlau (FE) | Seem | Ntau dua los yog sib npaug rau 22.0 |
| Molybdenum (mo) | 2.5 - 3.5 | 2.5 - 3.5 |
| Tooj Liab (Cu) | 1.5 - 3.0 | 1.5 - 3.0 |
| Manganese (mn) | 1.0 max | 1.0 max |
| Carbon (c) | 0.05 max | 0.05 max |
| Silicon (si) | 0.5 max | 0.5 max |
| Sulphur (s) | 0.03 max | 0.03 max |
| Titanium (ti) | 0.6 - 1.2 | 0.6 - 1.2 |
| Aluminium (AL) | 0.2 max | - |
| Al + ti | 0.85 - 1.20 | 0.85 - 1.20 |
2. Cov Khoom Siv Cov Khoom Siv (ntawm chav sov)
Raug cov khoom siv kho txhua yam rau annealed incoloy 825 Seamless Tubing yog:
| Ntiag tug | Cov nqi raug | ASTM B423 Qhov Yuav Tsum Tau |
|---|---|---|
| Lub zog tensile | 655 MPA (95 KSI) MIN | 586 MPa (85 Ksi) Min |
| Tawm Zog (0.2% offset) | 310 MPA (45 KSI) MIN | 241 MPA (35 ksi) min |
| Elongation (hauv 2 nti / 50 hli) | 30% min | 30% min |
| Hardness (Rockwell B) | 88 hrb max | 88 hrb max |
3. Lub cev lub cev
| Ntiag tug | Tus nqi |
|---|---|
| Ceev | 8.14 g / cm³ (0.294 lb / nyob rau hauv) |
| Melting ntau | {{01370 - 1400℃(2500 - 2550℃f) |
| Cov cua sov tshwj xeeb (20 degree) | 440 j / Kerg · k |
| Thermal Condivity (20 Qib) | 11.1 W/m·K |
| Hluav taws xob tiv thaiv hluav taws xob | 1.12 μΩ·m |
| Modulus ntawm elasticity (cov tub ntxhais hluas tus modulus) | 196 GPA (28.4 x 10⁶ PSI) |
| Thermal nthuav tawm coefficient (20-100 Qib) | 14.0 μm / mth degree |
Cov Khoom Siv Cov Txheej Txheem
Cov lus 1: Tus Qauv Specifications rau Incoloy 825 Tubing
| Tus Qauv Qauv | Lub npe | Tau luag |
|---|---|---|
| ASTM B423 / ASME SB423 | Txheem Cov Qauv Tshwj Xeeb rau Seamless thiab Welded Untrated N08825 Alloy Yeeb Nkab | Thawj tus qauv rau yeeb nkab thiab tubing. |
| ASTM B163 / ASME SB163 | Txheem Cov Qauv Tshwj Xeeb rau Seamless Condenser thiab tshav kub - cov tub ua pa | Tshwj xeeb rau kev ua kom sov thiab cov qog condenser. |
| ASTM B704 / ASME SB704 | Cov Qauv Qhia Tshwj Xeeb rau Welded Unic Tsis yog N06625 thiab UNFICT N08825 alloy leeg | Rau welded tubing (suav nrog rau kev siv). |
| Din / EN 2.4858 | Sib npaug European tus qauv rau NICR21MO | Sib npaug ntawm kev tsim duab European. |
Rooj 2: Raug corrosion tsis kam
| Corrosive Nruab Nrab | Kev xav ntsoov | Qho so | Ua yeeb yam |
|---|---|---|---|
| Sulfuric acid | Ntau hom | Mus txog ~ 40℃(104℃f) | Zoo heev (nrog oxidizing ntsev) |
| Phosphoric acid | Ntau hom | Txog rau boiling taw tes | Zoo tshaj |
| Nitric Acid | <50% | Txog li ~ 70℃(158℃f) | Zoo |
| Hydrochloric acid | Qi | Chav Chav Kub | Txwv (zoo dua li SS, tab sis tsis pom zoo) |
| Chloride Dolutions | Tag nrho | Kev Kub Siab | Kev tiv thaiv zoo heev rau kev ntxhov siab - corrosion tsoo |
| Dej hiav txwv | - | Tag nrho cov kub | Kev tiv thaiv zoo heev rau pitting & corrose corrosion |
Cov Kev Siv Cov Ntawv Siv
Incoloy 825 Seamless Tubing yog dav siv nyob rau hauv:
Tshuaj lom neeg:Pickling tso tsheb hlau luam, kev sib pauv cua sov, kev tawm tsam hlab.
Roj & Roj:
Cov tsev nyob hauv plawv kev.
Tubing rau corrosive Wells (Sour kev pabcuam nrog H₂S thiab CO₂).
Kev hloov kho cua sov hauv kev ua kom huv.
Lub zog tiam:Flue Gas Desulfurization Tshuab, Nuclear Roj reprocessing.
Marine Engineering:Dej hiav txwv txias roj, cov pob zeb ballast.
Acid Ntau Lawm:Cov cuab yeej siv rau cov sulfuric thiab phosphoric acid.
Muaj Cov Ntawv & Ntau Thiab Tsawg)
Seamless tubing muaj nyob rau hauv ntau ntawm:
Sab nraud inch (OD):Los ntawm 6 hli (1/4 ") rau 250 hli (10") thiab loj dua.
Phab ntsa tuab (wt):Cov sijhawm teem los ntawm SCH 5s rau sch XXS, lossis cov phab ntsa kev cai.
Ntev:Random ntev (feem ntau 6 - 7 meters) lossis txiav - rau-ntev.
Lub ntsiab
Incoloy 825 seamless tubing is a versatile, high-performance nickel-alloy product specified for its outstanding corrosion resistance in complex environments, particularly where chlorides and acids are present. Nws sib xyaw ntawm Nickel, chromium, thiab tooj, ruaj khov nrog titanium, muab cov tshuaj muaj zog rau cov ntawv thov kev lag luam tshaj plaws.
