AA 2024 Aluminum Alloy
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ファミリー: Aluminum Alloy
Copper Alloy (Al-Cu). AA designation 2024.
Overview
AA 2024 is the most widely used of the aluminium–copper alloys, built on 3.8–4.9% copper with magnesium and manganese and heat-treated to very high strength in the T3 or T351 temper. Its excellent strength-to-weight ratio and good fatigue resistance made it the primary skin material for aircraft fuselages, wings, and structural frames. The trade-off is a susceptibility to stress-corrosion cracking in certain environments, which is why it is frequently used in clad form or with protective finishing on airframe structure.
性能評価
Performance Radar
| 特性 | Rating |
|---|---|
| Strength | 5 / 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 | 407.5 MPa |
| 降伏強度 | 317.5 MPa |
| 伸び | 11.9% |
| 硬度（ロックウェル） |
化学組成
| 元素 | 割合 (%) |
|---|---|
| B | 0.661 |
| V | 0.015 |
| Al | 93.057 |
| Bi | 0.5 |
| Cr | 0.07 |
| Cu | 4.35 |
| Fe | 0.4 |
| Li | 2.845 |
| Mg | 1.5 |
| Mn | 0.6 |
| Ni | 0.1 |
| Pb | 0.035 |
| Pt | 0.05 |
| Si | 0.43 |
| Sn | 0.055 |
| Ti | 0.05 |
| Zn | 0.198 |
| Zr | 0.01 |
購入先 AA 2024 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 2024 is the most widely used aluminum-copper alloy, containing 3.8–4.9% copper with magnesium and manganese additions, achieving very high strength through T3 or T351 temper heat treatment. It offers an excellent strength-to-weight ratio and good fatigue resistance, though it is susceptible to stress corrosion cracking in certain environments. The alloy is the primary material for aircraft fuselage skins, wings, and structural frames.