AA 7055 Aluminum Alloy
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Họ: Aluminum Alloy
Zinc Alloy (Al-Zn). AA designation 7055.
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 | 654.0 MPa |
| Giới hạn chảy | 595.0 MPa |
| Độ giãn dài | 10.0% |
| Độ cứng (Rockwell) |
Thành phần hóa học
| Nguyên tố | Tỷ lệ phần trăm (%) |
|---|---|
| Al | 87,294 |
| Cr | 0,004 |
| Cu | 2,19 |
| Fe | 0,061 |
| Mg | 2,14 |
| Mn | 0,006 |
| Si | 0,055 |
| Ti | 0,024 |
| Zn | 8,11 |
| Zr | 0,12 |
Mua ở đâu AA 7055 Aluminum Alloy
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Mô tả
AA 7055 is one of the highest-strength commercial aluminum alloys available (yield strength >600 MPa in T77 temper), containing elevated zinc (~8% Zn), magnesium, and copper with zirconium for grain control. The T77 retrogression and re-aging (RRA) treatment achieves near-T6 strength with T73-level corrosion resistance, resolving the traditional strength-corrosion trade-off. It is used in upper wing skins of long-range commercial aircraft where maximum compression buckling resistance is required.