AA 7449 Aluminum Alloy
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ファミリー: Aluminum Alloy
Zinc Alloy (Al-Zn). AA designation 7449.
性能評価
Performance Radar
| 特性 | Rating |
|---|---|
| Strength | 6 / 10 |
| Corrosion Res. | 6 / 10 |
| Lightweight | 9 / 10 |
| Machinability | 8 / 10 |
| Affordability | 7 / 10 |
| Heat Res. | 4 / 10 |
組成
機械的特性
| 引張強度 | 554.5 MPa |
| 降伏強度 | 500.0 MPa |
| 伸び | 13.5% |
| 硬度（ロックウェル） |
化学組成
| 元素 | 割合 (%) |
|---|---|
| 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 |
購入先 AA 7449 Aluminum Alloy
リンクから手数料が発生する場合がありますが、追加費用はかかりません。
説明
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.