Qhov txawv ntawm Incoloy 800H thiab 825 yog dab tsi?
Qhov txawv ntawm Incoloy 800H thiab 825 yog dab tsi?
Incoloy 800H nthuav tawm zoo heev - kub lub zog thiab oxidation tsis kam, ua rau nws haum rau cov khoom siv hluav taws xob; Thaum Incoloy 825 muaj kev tiv thaiv zoo tshaj plaws ntawm txhua qhov kev tiv thaiv, tshwj xeeb tshaj yog nyob rau hauv acidic (sulfuric acid, phosphoric acid) thiab chloride- nplua nuj marine / tshuaj ib puag ncig, ua tsaug rau nws ntxiv molybdenum thiab tooj liab cov ntsiab lus, tab sis nws kuj tseem kim dua. Qhov sib txawv tseem ceeb ntawm ob yog tias 825 muaj kev tiv thaiv ntau dua rau pitting corrosion, crevice corrosion, thiab txo cov kua qaub, ua rau nws tsim nyog rau kev siv tshuaj ua haujlwm nyuaj, thaum 800H feem ntau yog siv rau hauv cov ntawv thov uas yuav tsum tau muaj qhov kub thiab txias.
Dab tsi yog cov txheej txheem kev kho cua sov rau Incoloy 800 alloy?
Cov tshuaj lom neeg muaj pes tsawg leeg ntawm INCOLOY 800HT alloy ntog nyob rau hauv qhov muaj pes tsawg leeg ntawm 800H alloy, tab sis nrog qee qhov kev txwv, thiab yuav tsum tau kho cua sov ntawm qhov kub ntawm qhov tsawg kawg nkaus ntawm 2100℃F (1149 degree). Nws cov ntsiab lus carbon yog 0.06% rau 0.10% (piv rau 0.05% rau 0.10% rau 800H alloy), thiab nws cov ntsiab lus aluminium + titanium yog 0.85% rau 1.20% (piv rau 0.30% rau 1.20% rau 800H alloy).
Cov tshuaj muaj pes tsawg leeg ntawm Incoloy 800H thiab Incoloy 825 alloys
| Lub ntsiab | Incoloy 800H (UNS N08810) | Incoloy 825 (UNS N08825) Cov. |
|---|---|---|
| Nickel (Ni) | 30.0 – 35.0 % | 38.0 – 46.0 % |
| Chromium (Cr) | 19.0 – 23.0 % | 19.5 – 23.5 % |
| Hlau (Fe) | Ntau dua lossis sib npaug li 39.5% | Ntau dua lossis sib npaug li 22.0% |
| Cov pa roj carbon (C) | 0.05 – 0.10 % | Tsawg dua lossis sib npaug li 0.05% |
| Aluminium (Al) | 0.15 – 0.60 % | Tsawg dua lossis sib npaug li 0.2% |
| Titanium (Ti) | 0.15 – 0.60 % | 0.6 – 1.2 % |
| Molybdenum (hli) | – | 2.5 – 3.5 % |
| Copper (Cu) | Tsawg dua lossis sib npaug li 0.75% | 1.5 – 3.0 % |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 1.5% | Tsawg dua lossis sib npaug li 1.0% |
| Silicon (Si) | Tsawg dua lossis sib npaug li 1.0% | Tsawg dua los yog sib npaug li 0.5% |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.015% | Tsawg dua lossis sib npaug li 0.03% |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.045% | Tsawg dua lossis sib npaug li 0.03% |
| Al + Ti | 0.30 – 1.20 % | – |
Mechanical zog ntawm Incoloy 800H thiab Incoloy 825 alloys
| Khoom | Incoloy 800H (Annealed) | Incoloy 825 (Annealed) |
|---|---|---|
| Tensile zog (MPa, min) | 450 – 585 | 586 – 724 |
| Yield zog (0.2% Offset, MPa, min) | 170 – 310 | 241 – 345 |
| Elongation (% hauv 50 mm, min) | 30 | 30 |
| Hardness (Rockwell B) | 79-95 IB | 88 PAB |
| Hardness (Brinell HB) | 120-190 HB | 146-217 IB |
| Qhov ceev (g / cm³) | 7.94 | 8.14 |
| Melting Range (zeeg) | 1350 – 1400 | 1370 – 1400 |
| Modulus ntawm Elasticity (GPa) | 200 | 196 |
| Qhov Kev Pab Cuam Siab Tshaj Plaws (Nruam, Hauv Huab Cua) | ~ 1150 degree | ~ 540 degree |
| Thermal conductivity (W / m·K, ntawm 20 degree) | 11.8 | 11.1 |
| Coefficient ntawm Thermal Expansion (× 10⁻⁶ / K, 20-100 degree) | 14.4 | 14.0 |
| Creep Resistance | Zoo heev (siab kub) | Zoo (kub nruab nrab) |
| Oxidation Resistance | Zoo heev | Zoo |
| Corrosion Resistance | Zoo (oxidizing atmospheres) | Zoo heev (acids, chlorides, seawater) |
| Impact Toughness (Charpy V-Notch, J) | Zoo | Zoo |
| Kev qaug zog | Zoo | Zoo |
Yuav ua li cas lub corrosion kuj zog ntawm Incoloy 800H thiab Incoloy 825 piv?
Thaum ob qho tib si Incoloy 800H thiab 825 pom zoo corrosion kuj, lawv ua tau txawv nyob rau hauv ntau qhov chaw vim lawv txawv compositions. Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau kev xaiv cov hlau tsim nyog rau ib daim ntawv thov tshwj xeeb:
1. General Corrosion Resistance:Incoloy 825 feem ntau muaj qhov zoo tshaj plaws corrosion kuj piv rau Incoloy 800H. Qhov no yog vim nws cov ntsiab lus ntau dua nickel (kwv yees li 42% piv rau 800H kwv yees li 32%) thiab ntxiv ntawm molybdenum (3%), uas ua rau nws tsis kam mus rau ntau yam ntawm corrosive media.
2. Pitting thiab Crevice Corrosion:Incoloy 825 nthuav tawm cov kev tiv thaiv zoo dua rau pitting thiab crevice corrosion, tshwj xeeb tshaj yog nyob rau hauv cov tshuaj chloride -muaj ib puag ncig. Lub xub ntiag ntawm molybdenum nyob rau hauv 825 ho txhim kho nws tsis kam mus rau cov ntaub ntawv ntawm localized corrosion.
3. Stress Corrosion Cracking (SCC):Ob lub alloys muaj kev tiv thaiv zoo rau kev ntxhov siab corrosion tawg, tab sis Incoloy 825 feem ntau ua tau zoo dua hauv cov tshuaj chloride- uas muaj ib puag ncig vim nws cov ntsiab lus ntau dua nickel.
4. Sulfuric Acid Ib puag ncig:Incoloy 825 qhia tau zoo heev tiv thaiv sulfuric acid corrosion ntawm ntau qhov ntau thiab qhov kub thiab txias, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv tshuaj lom neeg uas muaj sulfuric acid.
5. Oxidizing Ib puag ncig:Incoloy 800H excels nyob rau hauv siab - kub, siab oxidizing ib puag ncig vim nws muaj peev xwm tsim ib tug ruaj khov chromium oxide txheej. Qhov no ua rau nws tshwj xeeb tshaj yog haum rau siab -kev siv kub hauv oxidizing cua.
6. Txo ib puag ncig:Incoloy 825 feem ntau pom muaj kev tiv thaiv zoo dua los txo cov kua qaub thiab lwm qhov chaw txo qis piv rau Incoloy 800H.
7. Seawater thiab Marine Environments:Incoloy 825 muaj kev tiv thaiv zoo heev rau cov dej hiav txwv thiab cov huab cua hauv hiav txwv, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv ntug dej hiav txwv thiab ntug dej hiav txwv . 8. Siab -Temperature Corrosion: Txawm hais tias ob qho tib si alloys ua tau zoo ntawm qhov kub thiab txias, Incoloy 800H tuav nws cov corrosion kuj ntawm qhov kub thiab txias (txog 1100℃5 5) piv rau Incoloy 5 (txog li 1100℃5). Nws yog ib qho tsim nyog sau cia tias thaum Incoloy 825 nthuav tawm tag nrho cov kev tiv thaiv corrosion zoo heev hauv ntau qhov chaw, Incoloy 800H feem ntau yog qhov kev xaiv zoo dua rau cov ntawv thov uas xav tau siab tshaj - kub lub zog thiab oxidation tsis kam. Kev xaiv ntawm ob lub alloys no nyob ntawm qhov tshwj xeeb ib puag ncig, qhov xav tau ntawm qhov kub thiab txias, thiab cov khoom siv kho tshuab xav tau rau daim ntawv thov.
Yuav xaiv li cas:
Xaiv 800H / HT:Haum rau cov ntawv thov uas qhov kev sib tw tseem ceeb yog qhov kub thiab txias thiab corrosive media txwv, kom txuag tau cov nqi.
Xaiv 825:Haum rau tuav cov tshuaj corrosive, chlorides, los yog marine ib puag ncig uas muaj kev pheej hmoo ntawm pitting thiab acid corrosion.
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