6061 t6 aluminium vs 7075 aluminium
6061 t6 aluminium vs 7075
Aluminiumlegeringen 6061-T6 en 7075 worden veel gebruikt in technische toepassingen, maar ze hebben verschillende eigenschappen en zijn geschikt voor verschillende doeleinden. Hieronder vindt u een gedetailleerde vergelijking van deze twee legeringen in termen van hun mechanische eigenschappen, fysieke eigenschappen, en typische toepassingen:
Vergelijking tussen 6061-T6 en 7075 Aluminium
| Eigendom | 6061-T6 aluminium | 7075 Aluminium |
|---|
| Samenstelling | 0.8-1.2% mg, 0.4-0.8% En, 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 |
| Treksterkte | 310 MPa (45 ksi) | 572 MPa (83 ksi) |
| Opbrengst sterkte | 275 MPa (40 ksi) | 503 MPa (73 ksi) |
| Verlenging bij breuk | 12% | 11% |
| Hardheid (Brinell) | 95 HB | 150 HB |
| Elasticiteitsmodulus | 68.9 GPa (10,000 ksi) | 71.7 GPa (10,400 ksi) |
| Dikte | 2.70 g/cm³ | 2.81 g/cm³ |
| Vermoeidheid Sterkte | 96 MPa (14 ksi) | 159 MPa (23 ksi) |
| Warmtegeleiding | 167 W/m·K | 130 W/m·K |
| Corrosieweerstand | Uitstekend | Fair to Poor (without protective coating) |
| Lasbaarheid | Uitstekend | Arm |
| Bewerkbaarheid | Goed | Fair to Good |
| Hittebehandeling | Heat treatable to T6 condition | Heat treatable to T6 or T73 condition |
Key Differences in Properties
- Kracht:
- 7075 Aluminium is much stronger, with a tensile strength of 572 MPa compared to 310 MPa for 6061-T6. Dit maakt 7075 aluminum ideal for high-stress structural applications.
- Corrosieweerstand:
- 6061-T6 aluminium heeft een uitstekende corrosieweerstand, especially against atmospheric and marine conditions, terwijl 7075 Aluminium has fair to poor corrosion resistance and often requires a protective coating or anodizing for use in corrosive environments.
- Lasbaarheid:
- 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.
- Bewerkbaarheid:
- 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.
- Dikte:
- 7075 Aluminium is slightly denser (2.81 g/cm³) than 6061-T6 aluminium (2.70 g/cm³), which can affect weight-sensitive applications.
- Warmtegeleiding:
- 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 |
|---|
| Lucht- en ruimtevaart | Aircraft fittings, brandstoftanks, and fuselage structures | High-stress structural parts like aircraft wings, fuselage frames, and landing gear |
| Automobiel | Chassis, wheel spacers, and engine components | Racing components like suspension parts, gears, and shafts |
| Marien | Boat hulls, masten, en scheepsfittingen | Not typically used due to poor corrosion resistance |
| General Construction | Structurele componenten, leidingen, en kaders | Not common; only when high strength is needed |
| Sports Equipment | Fietsframes, camping equipment, and scuba tanks | High-performance bicycle components, climbing equipment |
| Elektronica | Heat sinks and electrical fittings | Not typically used; 6061 is preferred for thermal applications |
| Consumentengoederen | Ladders, meubilair, 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, en heeft een uitstekende corrosieweerstand, waardoor het geschikt is voor een breed scala aan toepassingen, including marine, automobiel, bouw, en elektronica.
- 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.
