UNS N08825 los yog DIN W.Nr. 2.4858, Incoloy 825 (tseem hu ua "Alloy 825") yog hlau-nickel-chromium alloy nrog ntxiv ntawm molybdenum, cooper thiab titanium. Qhov sib ntxiv ntawm molybdenum txhim kho nws cov kev tiv thaiv rau pitting corrosion nyob rau hauv aqueous corrosion daim ntawv thov thaum tooj liab cov ntsiab lus bestows kuj rau sulfuric acid. Titanium ntxiv rau stabilization. Lub Alloy 825 muaj kev tiv thaiv zoo heev rau ob qho tib si txo thiab oxidizing acids, rau kev ntxhov siab-corrosion tawg, thiab kev tawm tsam hauv zos xws li pitting thiab crevice corrosion. Nws yog tshwj xeeb tshaj yog resistant rau sulfuric thiab phosphoric acids. Incoloy 825 alloy feem ntau yog siv rau kev ua tshuaj lom neeg, petrochemical piping, cov khoom siv tswj kev ua qias tuaj, roj thiab roj zoo piping, nuclear roj reprocessing, acid ntau lawm, thiab pickling khoom.
1. Chemical Composition Requirements
| Cov tshuaj muaj pes tsawg leeg ntawm Incoloy 825,% | |
|---|---|
| Nickel | 38.0-46.0 Nws |
| Hlau | ≥22.0 |
| Chromium | 19.5-23.5 Nws |
| Molybdenum | 2.5-3.5 |
| Tooj | 1.5-3.0 Nws |
| Titanium | 0.6-1.2 hli |
| Cov pa roj carbon | ≤ 0.05 |
| Manganese | ≤ 1.00 |
| Sulfur | ≤ 0.030 |
| Silicon | ≤0.50 |
| Aluminium | ≤ 0.20 |
2. Mechanical Properties of Incoloy 825
Incoloy 825 weld caj dab flanges 600 # SCH80, tsim rau ASTM B564.
| Tensile zog, min. | Yield zog, min. | Elongation, min. | Elastic Modulus | |||
|---|---|---|---|---|---|---|
| Mpa | ksi ua | Mpa | ksi ua | % | Gpa | 106psi |
| 690 ib | 100 | 310 | 45 | 45 | 206 | 29.8 ib |
3. Lub cev muaj zog ntawm Incoloy 825
| Qhov ntom | Melting Range | Tshwj xeeb kub | Hluav taws xob Resistivity | ||
|---|---|---|---|---|---|
| g/cm3 | °C | ° F | J/kg | Btu/lb. ° F | µΩ·m |
| 8.14 ib | 1370-1400 Nws | 2500-2550 | 440 | 0.105 ib | 1130 |
4. Cov Qauv Khoom thiab Cov Qauv ntawm Incoloy 825
| Yam khoom | Txuj |
|---|---|
| Rods thiab bars | ASTM B425, DIN17752 |
| Phaj, ntawv thiab strips | ASTM B906, B424 |
| Seamless yeeb nkab thiab raj | ASTM B423, B829, NQA |
| Welded kav | ASTM B705, B775 thiab ASTM B775 |
| Welded hlab | ASTM B704, B751 |
| Welded yeeb nkab fittings | ASTM A 366 Cov khoom siv |
| Forging | ASTM B564, DIN17754 |
Post lub sij hawm: Oct-23-2020