6061 T6 Aluminium vs 7075 Aluminium
6061 T6 Aluminium vs 7075
Aluminiumlegierungen 6061-T6 und 7075 werden häufig in technischen Anwendungen eingesetzt, Sie haben jedoch unterschiedliche Eigenschaften und sind für unterschiedliche Zwecke geeignet. Nachfolgend finden Sie einen detaillierten Vergleich dieser beiden Legierungen hinsichtlich ihrer mechanischen Eigenschaften, physikalische Eigenschaften, und typische Verwendungszwecke:
Vergleich zwischen 6061-T6 und 7075 Aluminium
| Eigentum | 6061-T6 Aluminium | 7075 Aluminium |
|---|
| Komposition | 0.8-1.2% mg, 0.4-0.8% Und, 0.15-0.4% Cu, 0.04-0.35% Kr | 5.1-6.1% Zn, 2.1-2.9% mg, 1.2-2.0% Cu, 0.18-0.28% Kr |
| Zugfestigkeit | 310 MPa (45 ksi) | 572 MPa (83 ksi) |
| Ertragsstärke | 275 MPa (40 ksi) | 503 MPa (73 ksi) |
| Bruchdehnung | 12% | 11% |
| Härte (Brinell) | 95 HB | 150 HB |
| Elastizitätsmodul | 68.9 GPa (10,000 ksi) | 71.7 GPa (10,400 ksi) |
| Dichte | 2.70 g/cm³ | 2.81 g/cm³ |
| Ermüdungsfestigkeit | 96 MPa (14 ksi) | 159 MPa (23 ksi) |
| Wärmeleitfähigkeit | 167 W/m·K | 130 W/m·K |
| Korrosionsbeständigkeit | Exzellent | Fair to Poor (without protective coating) |
| Schweißbarkeit | Exzellent | Arm |
| Bearbeitbarkeit | Gut | Fair to Good |
| Wärmebehandlung | Heat treatable to T6 condition | Heat treatable to T6 or T73 condition |
Key Differences in Properties
- Stärke:
- 7075 Aluminium is much stronger, with a tensile strength of 572 MPa compared to 310 MPa for 6061-T6. Das macht 7075 aluminum ideal for high-stress structural applications.
- Korrosionsbeständigkeit:
- 6061-T6 Aluminium verfügt über eine ausgezeichnete Korrosionsbeständigkeit, especially against atmospheric and marine conditions, während 7075 Aluminium has fair to poor corrosion resistance and often requires a protective coating or anodizing for use in corrosive environments.
- Schweißbarkeit:
- 6061-T6 Aluminium is highly weldable, making it suitable for structures requiring frequent welding. 7075 Aluminium is difficult to weld and can suffer from cracking and brittleness after welding.
- Bearbeitbarkeit:
- 6061-T6 Aluminium is known for its good machinability, which is better than that of 7075 Aluminium, although 7075 still offers acceptable machinability for most applications.
- Dichte:
- 7075 Aluminium is slightly denser (2.81 g/cm³) than 6061-T6 Aluminium (2.70 g/cm³), which can affect weight-sensitive applications.
- Wärmeleitfähigkeit:
- 6061-T6 Aluminium has better thermal conductivity (167 W/m·K) compared to 7075 Aluminium (130 W/m·K), making it preferable for heat-exchange applications.
Comparison of Uses
| Application Area | 6061-T6 Aluminium | 7075 Aluminium |
|---|
| Luft- und Raumfahrt | Aircraft fittings, Treibstofftanks, and fuselage structures | High-stress structural parts like aircraft wings, fuselage frames, and landing gear |
| Automobil | Chassis, wheel spacers, and engine components | Racing components like suspension parts, gears, and shafts |
| Marine | Boat hulls, Masten, und Schiffsarmaturen | Not typically used due to poor corrosion resistance |
| General Construction | Structural components, Rohrleitungen, und Rahmen | Not common; only when high strength is needed |
| Sports Equipment | Fahrradrahmen, camping equipment, and scuba tanks | High-performance bicycle components, climbing equipment |
| Elektronik | Heat sinks and electrical fittings | Not typically used; 6061 is preferred for thermal applications |
| Konsumgüter | Ladders, Möbel, and household items | Premium products where high strength is desired, such as rugged outdoor gear |
Summary
- 6061-T6 Aluminium is more versatile, easier to work with, und verfügt über eine ausgezeichnete Korrosionsbeständigkeit, wodurch es für ein breites Anwendungsspektrum geeignet ist, including marine, Automobil, Konstruktion, und Elektronik.
- 7075 Aluminium 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.
