Hoʻonohonoho ʻia ʻo UNS N08020, Alloy 20 (i ʻike ʻia ʻo "Incoloy 020" a i ʻole "Incoloy 20") he nickel-iron-chromium alloy me nā mea hoʻohui o ke keleawe a me ka molybdenum. Loaʻa iā ia ke kūʻē ʻino i ka sulfuric acid, choloride stress-corrosion cracking, nitric acid, a me ka phosphoric acid. Hiki i ka Alloy 20 ke hana maʻalahi i ka wela a i ʻole ke anu i nā valve, nā paipu paipu, nā flanges, fasteners, pumps, tanks, a me nā mea hoʻololi wela. Pono ka mahana wela wela ma waena o 1400-2150°F [760-1175°C]. ʻO ka mea maʻamau, pono e mālama ʻia ka mālama wela o ka annealing ma ka pae wela o 1800-1850°F [982-1010°C]. Hoʻohana nui ʻia ʻo Alloy 20 no ka hana ʻana i ka ʻaila, nā mea kanu a me nā kemika inorganic, ka hana lāʻau lapaʻau, a me ka ʻoihana meaʻai.
1. Nā Koina Hoʻohui Kemika
| Ka Hui Kemika o Alloy 20, % | |
|---|---|
| Nikela | 32.0-38.0 |
| Chromiun | 19.0-21.0 |
| keleawe | 3.0-4.0 |
| Molybdenum | 2.0-3.0 |
| hao | Kaulike |
| Kalapona | ≤0.07 |
| Niobium+tantalum | 8*C-1.0 |
| Managana | ≤2.00 |
| Phosphorus | ≤0.045 |
| Sulfur | ≤0.035 |
| Silika | ≤1.00 |
2. Pono Mechanical o Alloy 20
ʻO ASTM B462 Alloy 20 (UNS N08020) i hoʻopaʻa ʻia a me nā flanges paʻa.
| Paʻa Paʻa, min. | Ka ikaika hua, min. | Elongation, min. | Opio Modulus | |||
|---|---|---|---|---|---|---|
| Mpa | ksi | Mpa | ksi | % | 103ksi | Gpa |
| 620 | 90 | 300 | 45 | 40 | 28 | 193 |
3. Na Pono Kino o ka Alloy 20
| ʻO ka mānoanoa | Wela Kūikawā | Kū'ē Uila | ʻO ka hoʻoili wela |
|---|---|---|---|
| g/cm3 | J/kg.°C | µΩ·m | W/m.°C |
| 8.08 | 500 | 1.08 | 12.3 |
4. Nā ʻano huahana a me nā kūlana
| ʻAno Huahana | Kūlana |
|---|---|
| ʻO ke koʻokoʻo, ka pā a me ka uwea | ASTM B473, B472, B462 |
| ʻO ka pā, ka pepa a me ke kāʻei | ASTM A240, A480, B463, B906 |
| Paipu a me ka paipu ʻole | ASTM B729, B829 |
| Paipu welo | ASTM B464, B775 |
| Paipu welo | ASTM B468, B751 |
| ʻO nā mea i hoʻopili ʻia | ASTM B366 |
| ʻO nā flanges forged a me nā mea hoʻopili forged | ASTM B462, B472 |
Ka manawa hoʻouna: Oct-23-2020