AA 7449 Aluminum Alloy
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Họ: Aluminum Alloy
Zinc Alloy (Al-Zn). AA designation 7449.
Xếp hạng Hiệu suất
Performance Radar
| Tính chất | Rating |
|---|---|
| Strength | 6 / 10 |
| Corrosion Res. | 6 / 10 |
| Lightweight | 9 / 10 |
| Machinability | 8 / 10 |
| Affordability | 7 / 10 |
| Heat Res. | 4 / 10 |
Thành phần
Tính chất Cơ học
| Độ bền kéo | 554.5 MPa |
| Giới hạn chảy | 500.0 MPa |
| Độ giãn dài | 13.5% |
| Độ cứng (Rockwell) |
Thành phần hóa học
| Nguyên tố | Tỷ lệ phần trăm (%) |
|---|---|
| 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 |
Mua ở đâu AA 7449 Aluminum Alloy
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Mô tả
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.