6061 t6アルミニウム vs 7075 アルミニウム
6061 t6アルミニウム vs 7075
アルミニウム合金 6061-T6 および 7075 エンジニアリング用途で広く使用されています, しかし、それらは異なる特性を持ち、異なる目的に適しています. 以下は、これら 2 つの合金の機械的特性の詳細な比較です。, 物理的特性, と典型的な用途:
6061-T6との比較 7075 アルミニウム
| 財産 | 6061-T6アルミニウム | 7075 アルミニウム |
|---|
| 構成 | 0.8-1.2% マグネシウム, 0.4-0.8% そして, 0.15-0.4% 銅, 0.04-0.35% Cr | 5.1-6.1% 亜鉛, 2.1-2.9% マグネシウム, 1.2-2.0% 銅, 0.18-0.28% Cr |
| 抗張力 | 310 MPa (45 クシ) | 572 MPa (83 クシ) |
| 降伏強さ | 275 MPa (40 クシ) | 503 MPa (73 クシ) |
| 破断伸び | 12% | 11% |
| 硬度 (ブリネル) | 95 HB | 150 HB |
| 弾性率 | 68.9 GPa (10,000 クシ) | 71.7 GPa (10,400 クシ) |
| 密度 | 2.70 g/cm3 | 2.81 g/cm3 |
| 疲労強度 | 96 MPa (14 クシ) | 159 MPa (23 クシ) |
| 熱伝導率 | 167 W/m·K | 130 W/m·K |
| 耐食性 | 素晴らしい | Fair to Poor (without protective coating) |
| 溶接性 | 素晴らしい | Poor |
| 被削性 | 良い | Fair to Good |
| 熱処理 | Heat treatable to T6 condition | Heat treatable to T6 or T73 condition |
Key Differences in Properties
- 強さ:
- 7075 アルミニウム is much stronger, with a tensile strength of 572 MPa compared to 310 MPa for 6061-T6. This makes 7075 aluminum ideal for high-stress structural applications.
- 耐食性:
- 6061-T6アルミニウム has excellent corrosion resistance, especially against atmospheric and marine conditions, その間 7075 アルミニウム has fair to poor corrosion resistance and often requires a protective coating or anodizing for use in corrosive environments.
- 溶接性:
- 6061-T6アルミニウム is highly weldable, making it suitable for structures requiring frequent welding. 7075 アルミニウム is difficult to weld and can suffer from cracking and brittleness after welding.
- 被削性:
- 6061-T6アルミニウム is known for its good machinability, which is better than that of 7075 アルミニウム, although 7075 still offers acceptable machinability for most applications.
- 密度:
- 7075 アルミニウム is slightly denser (2.81 g/cm3) than 6061-T6アルミニウム (2.70 g/cm3), which can affect weight-sensitive applications.
- 熱伝導率:
- 6061-T6アルミニウム has better thermal conductivity (167 W/m·K) compared to 7075 アルミニウム (130 W/m·K), making it preferable for heat-exchange applications.
Comparison of Uses
| Application Area | 6061-T6アルミニウム | 7075 アルミニウム |
|---|
| 航空宇宙 | Aircraft fittings, 燃料タンク, and fuselage structures | High-stress structural parts like aircraft wings, fuselage frames, and landing gear |
| 自動車 | Chassis, wheel spacers, and engine components | Racing components like suspension parts, gears, and shafts |
| Marine | Boat hulls, masts, and marine fittings | Not typically used due to poor corrosion resistance |
| General Construction | Structural components, piping, とフレーム | Not common; only when high strength is needed |
| Sports Equipment | 自転車フレーム, camping equipment, and scuba tanks | High-performance bicycle components, climbing equipment |
| エレクトロニクス | Heat sinks and electrical fittings | Not typically used; 6061 is preferred for thermal applications |
| Consumer Goods | Ladders, furniture, and household items | Premium products where high strength is desired, such as rugged outdoor gear |
Summary
- 6061-T6アルミニウム is more versatile, easier to work with, and has excellent corrosion resistance, making it suitable for a wide range of applications, including marine, 自動車, 工事, and electronics.
- 7075 アルミニウム offers superior strength, making it ideal for high-stress applications like aerospace and high-performance sports equipment, but it has poorer weldability and corrosion resistance, limiting its use in certain environments.
