Fa'ailogaina o le UNS N08020, Alloy 20 (fa'aigoa o le "Incoloy 020" po'o le "Incoloy 20") o se nickel-iron-chromium alloy ma fa'aopoopoga o kopa ma molybdenum. O lo'o i ai le fa'alavelave fa'aleagaina i le sulfuric acid, choloride stress-corrosion ta'e, nitric acid, ma le phosphoric acid. Alloy 20 e mafai ona faigofie ona faʻavela pe malulu i valve, paipa faʻapipiʻi, flanges, faʻamau, pamu, tane, faʻapea foʻi ma mea faʻafefe vevela. O le vevela e fa'atupuina ai e tatau ona iai ile va ole 1400-2150°F [760-1175°C]. E masani lava, o le vevela o le faʻafefeteina e tatau ona faia i le vevela o le 1800-1850°F [982-1010°C]. Alloy 20 o loʻo faʻaaogaina lautele mo le gaosiga o penisini, vailaʻau faʻasolosolo & vailaʻau faʻapitoa, gaosiga o vailaʻau, ma pisinisi taumafa.
1. Tulaga Fa'ainumera Manaomia
| Le Tulaga Fa'a-Kemikolo o Alloy 20,% | |
|---|---|
| Nikeli | 32.0-38.0 |
| Chromiun | 19.0-21.0 |
| Kopa | 3.0-4.0 |
| Molybdenum | 2.0-3.0 |
| Uamea | Paleni |
| kaponi | ≤0.07 |
| Niobium+tantalum | 8*C-1.0 |
| Managanese | ≤2.00 |
| Phosphorus | ≤0.045 |
| Sulfur | ≤0.035 |
| Silicon | ≤1.00 |
2. Meatotino Fa'ainisinia o Alloy 20
ASTM B462 Alloy 20 (UNS N08020) fa'apipi'i fa'apipi'i ma au fa'a'au.
| Malosi Tetele, min. | Malosi, min. | Faaumiumi, min. | Young's Modulus | |||
|---|---|---|---|---|---|---|
| Mpa | ksi | Mpa | ksi | % | 103ksi | Gpa |
| 620 | 90 | 300 | 45 | 40 | 28 | 193 |
3. Meatotino Faaletino o Alloy 20
| Malosi | Avela faapitoa | Tete'e eletise | Amioga vevela |
|---|---|---|---|
| g/cm3 | J/kg.°C | µΩ·m | W/m.°C |
| 8.08 | 500 | 1.08 | 12.3 |
4. Fua ma Tulaga Fa'atonu
| Fomu o oloa | Tulaga |
|---|---|
| Tootoo, pa ma uaea | ASTM B473, B472, B462 |
| Papatusi, laupepa ma fasi pepa | ASTM A240, A480, B463, B906 |
| Paipa ma fa'apa'au e leai se mea | ASTM B729, B829 |
| Paipa uelo | ASTM B464, B775 |
| Fa'apa'au fa'apau | ASTM B468, B751 |
| Mea fa'apipi'i uelo | ASTM B366 |
| Fa'au'au fa'amea ma mea fa'apipi'i | ASTM B462, B472 |
Taimi meli: Oke-23-2020