AA 2195 Aluminum Alloy
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Семейство: Aluminum Alloy
Copper Alloy (Al-Cu). AA designation 2195.
Overview
Originally developed to lighten the Space Shuttle external tank in place of 2219, AA 2195 is a high-performance aluminium–copper–lithium alloy of about 4% copper and 1% lithium. It offers markedly higher strength and stiffness than conventional aluminium alloys along with excellent cryogenic toughness at liquid-hydrogen temperatures. Those attributes place it in aerospace cryogenic fuel tanks, launch-vehicle structures, and spacecraft pressure vessels.
Рейтинги характеристик
Performance Radar
| Свойство | Rating |
|---|---|
| Strength | 6 / 10 |
| Corrosion Res. | 6 / 10 |
| Lightweight | 9 / 10 |
| Machinability | 8 / 10 |
| Affordability | 7 / 10 |
| Heat Res. | 4 / 10 |
Состав
Механические свойства
| Предел прочности на растяжение | 572.0 MPa |
| Предел текучести | 522.0 MPa |
| Относительное удлинение | 9.1% |
| Твёрдость (по Роквеллу) |
Химический состав
| Элемент | Процентное содержание (%) |
|---|---|
| Ag | 0,41 |
| Al | 94,18 |
| Cu | 3,97 |
| Fe | 0,15 |
| Li | 1,07 |
| Mg | 0,415 |
| Mn | 0,23 |
| Si | 0,09 |
| Ti | 0,11 |
| Zr | 0,13 |
Где купить AA 2195 Aluminum Alloy
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Описание
AA 2195 is a high-performance aluminum-copper-lithium alloy (~4% Cu, 1% Li) originally developed for the Space Shuttle External Tank to replace the heavier 2219 alloy. It provides significantly higher strength and stiffness than conventional aluminum alloys along with excellent cryogenic toughness at liquid hydrogen temperatures. Primary applications include aerospace cryogenic fuel tanks, launch vehicle structures, and spacecraft pressure vessels.