Ahapụtara dị ka UNS N08020, Alloy 20 (a makwaara dị ka "Incoloy 020" ma ọ bụ "Incoloy 20") bụ ihe nickel-iron-chromium alloy nwere mgbakwunye ọla kọpa na molybdenum. Ọ nwere nguzogide corrosion pụrụ iche na sulfuric acid, choloride stress-corrosion cracking, nitric acid, na phosphoric acid. Alloy 20 nwere ike ịmepụta ngwa ngwa na-ekpo ọkụ ma ọ bụ oyi na-atụ na valves, ọkpọkọ ọkpọkọ, flanges, fasteners, nfuli, tankị, yana ihe ndị na-ekpo ọkụ ọkụ. Okpomọkụ na-ekpo ọkụ kwesịrị ịdị na nso 1400-2150°F [760-1175°C]. Ọtụtụ mgbe, a ga-eduzi ọgwụgwọ okpomọkụ nke ịchafụ na okpomọkụ nke 1800-1850 ° F [982-1010 ° C]. Alloy 20 na-eji ọtụtụ ebe maka mmepụta nke mmanụ ụgbọala, organic & inorganic chemicals, ọgwụ nhazi, na nri ụlọ ọrụ.
1. Chemical mejupụtara chọrọ
| Ihe mejupụtara kemịkalụ nke Alloy 20,% | |
|---|---|
| Nickel | 32.0-38.0 |
| Chromion | 19.0-21.0 |
| Ọla kọpa | 3.0-4.0 |
| Molybdenum | 2.0-3.0 |
| Ígwè | Nhazi |
| Carbon | ≤0.07 |
| Niobium+tantalum | 8*C-1.0 |
| Managanese | ≤2.00 |
| Phosphorus | ≤0.045 |
| sọlfọ | ≤0.035 |
| Silikoni | ≤1.00 |
2. Mechanical Njirimara nke Alloy 20
ASTM B462 Alloy 20 (UNS N08020) etinyere akwa akwa na flange adịgboroja.
| Ike ntakiri, min. | Ike Mpụta, min. | Ogologo oge, min. | Modul nke Young | |||
|---|---|---|---|---|---|---|
| Mpa | ksi | Mpa | ksi | % | 103ksi | Gpa |
| 620 | 90 | 300 | 45 | 40 | 28 | 193 |
3. Njirimara anụ ahụ nke Alloy 20
| Njupụta | Okpomọkụ akọwapụtara | Eletriki Resistivity | Nrụpụta okpomọkụ |
|---|---|---|---|
| g/cm3 | J/kg.°C | µΩ·m | W/m.°C |
| 8.08 | 500 | 1.08 | 12.3 |
4. Ụdị ngwaahịa na ụkpụrụ
| Ụdị ngwaahịa | Ọkọlọtọ |
|---|---|
| Mkpanaka, mmanya na waya | ASTM B473, B472, B462 |
| Efere, mpempe akwụkwọ na warara | ASTM A240, A480, B463, B906 |
| Ọkụ na-enweghị ntụpọ | ASTM B729, B829 |
| Ọkụ welded | ASTM B464, B775 |
| welded tube | ASTM B468, B751 |
| Ngwa welded | ASTM B366 |
| Flange ndị a kpara akpa na akwa akwa akwa | ASTM B462, B472 |
Oge nzipu: Ọktoba 23-2020