Tsim los ua UNS N08020, Alloy 20 (tseem hu ua "Incoloy 020" lossis "Incoloy 20") yog nickel-hlau-chromium alloy nrog ntxiv ntawm tooj liab thiab molybdenum. Nws muaj qhov tshwj xeeb corrosion tsis kam rau sulfuric acid, choloride stress-corrosion cracking, nitric acid, thiab phosphoric acid. Alloy 20 tuaj yeem ua tau yooj yim kub-tsim los yog txias-tsim rau li qub, yeeb nkab fittings, flanges, fasteners, twj, tso tsheb hlau luam, nrog rau cov khoom siv hluav taws xob sib hloov. Qhov kub txheej txheem kub yuav tsum nyob rau hauv thaj tsam ntawm 1400-2150 ° F [760-1175 ° C]. Feem ntau, kev kho cua sov ntawm annealing yuav tsum tau ua ntawm qhov kub ntawm 1800-1850 ° F [982-1010 ° C]. Alloy 20 yog dav siv rau kev tsim cov roj av, organic & inorganic chemicals, kev ua tshuaj, thiab kev lag luam zaub mov.
1. Chemical Composition Requirements
| Cov tshuaj muaj pes tsawg leeg ntawm Alloy 20,% | |
|---|---|
| Nickel | 32.0-38.0 Nws |
| Chromiun | 19.0-21.0 Nws |
| Tooj | 3.0-4.0 Nws |
| Molybdenum | 2.0-3.0 Nws |
| Hlau | Tshuav |
| Cov pa roj carbon | ≤ 0.07 |
| Niobium + tantalum | 8 * C-1.0 |
| Managanese | ≤ 2.00 |
| Phosphorus | ≤ 0.045 |
| Sulfur | ≤ 0.035 |
| Silicon | ≤ 1.00 |
2. Mechanical Properties of Alloy 20
ASTM B462 Alloy 20 (UNS N08020) forged fittings thiab forged flanges.
| Tensile zog, min. | Yield zog, min. | Elongation, min. | Young's Modulus | |||
|---|---|---|---|---|---|---|
| Mpa | ksi ua | Mpa | ksi ua | % | 103ksi ua | Gpa |
| 620 | 90 | 300 | 45 | 40 | 28 | 193 |
3. Lub cev muaj zog ntawm Alloy 20
| Qhov ntom | Tshwj xeeb kub | Hluav taws xob Resistivity | Thermal conductivity |
|---|---|---|---|
| g/cm3 | J/kg.°C | µΩ·m | W/m.°C |
| 8.08 Nws | 500 | 1.08 Nws | 12.3 |
4. Cov Qauv Khoom thiab Cov Qauv
| Daim ntawv khoom | Txuj |
|---|---|
| Qws, bar thiab hlau | ASTM B473, B472, B462 |
| Phaj, ntawv thiab strip | ASTM A240, A480, B463, B906 |
| Seamless yeeb nkab thiab raj | ASTM B729, B829, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729, ASTM B729 /တို့ကတို့မှ) |
| Welded yeeb nkab | ASTM B464, B775 |
| Welded raj | ASTM B468, B751 |
| Welded fittings | ASTM B 366 Cov khoom siv |
| Forged flanges thiab forged fittings | ASTM B462, B472 |
Post lub sij hawm: Oct-23-2020