AA 7449 Aluminum Alloy
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Семейство: Aluminum Alloy
Zinc Alloy (Al-Zn). AA designation 7449.
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 | 554.5 MPa |
| Предел текучести | 500.0 MPa |
| Относительное удлинение | 13.5% |
| Твёрдость (по Роквеллу) |
Химический состав
| Элемент | Процентное содержание (%) |
|---|---|
| Al | 87,78 |
| Cr | 0,05 |
| Cu | 1,7 |
| Fe | 0,15 |
| Mg | 2,15 |
| Mn | 0,2 |
| Si | 0,12 |
| Ti | 0,125 |
| Zn | 8,1 |
| Zr | 0,2 |
Где купить AA 7449 Aluminum Alloy
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Описание
AA 7449 is a high-strength, high-toughness aluminum alloy (~8.4% Zn, 1.8–2.4% Mg, 1.4–2.1% Cu) developed specifically for thick plate applications in primary aircraft structure where improved toughness over 7150 and 7055 is required in overaged T7651 temper. The high zinc content provides high strength potential while the tightly controlled Cu/Mg ratio optimizes the corrosion resistance and toughness balance. It is used in upper wing covers of wide-body commercial aircraft.