6061 aluminio t6 vs. 7075 aluminio
6061 aluminio t6 vs. 7075
Aleaciones de aluminio 6061-T6 y 7075 Son ampliamente utilizados en aplicaciones de ingeniería., pero tienen diferentes propiedades y son adecuados para diferentes propósitos. A continuación se muestra una comparación detallada de estas dos aleaciones en términos de sus propiedades mecánicas., propiedades físicas, y usos típicos:
Comparación entre 6061-T6 y 7075 Aluminio
| Propiedad | 6061-Aluminio T6 | 7075 Aluminio |
|---|
| Composición | 0.8-1.2% magnesio, 0.4-0.8% Y, 0.15-0.4% cobre, 0.04-0.35% cr | 5.1-6.1% zinc, 2.1-2.9% magnesio, 1.2-2.0% cobre, 0.18-0.28% cr |
| Resistencia a la tracción | 310 MPa (45 ksi) | 572 MPa (83 ksi) |
| Límite elástico | 275 MPa (40 ksi) | 503 MPa (73 ksi) |
| Alargamiento en rotura | 12% | 11% |
| Dureza (Brinell) | 95 media pensión | 150 media pensión |
| Módulo de elasticidad | 68.9 GPa (10,000 ksi) | 71.7 GPa (10,400 ksi) |
| Densidad | 2.70 g/cm³ | 2.81 g/cm³ |
| Resistencia a la fatiga | 96 MPa (14 ksi) | 159 MPa (23 ksi) |
| Conductividad térmica | 167 W/m·K | 130 W/m·K |
| Resistencia a la corrosión | Excelente | Fair to Poor (without protective coating) |
| soldabilidad | Excelente | Pobre |
| maquinabilidad | Bien | Fair to Good |
| Tratamiento térmico | Heat treatable to T6 condition | Heat treatable to T6 or T73 condition |
Key Differences in Properties
- Fortaleza:
- 7075 Aluminio is much stronger, with a tensile strength of 572 MPa compared to 310 MPa for 6061-T6. Esto hace 7075 aluminum ideal for high-stress structural applications.
- Resistencia a la corrosión:
- 6061-Aluminio T6 has excellent corrosion resistance, especially against atmospheric and marine conditions, tiempo 7075 Aluminio has fair to poor corrosion resistance and often requires a protective coating or anodizing for use in corrosive environments.
- soldabilidad:
- 6061-Aluminio T6 is highly weldable, making it suitable for structures requiring frequent welding. 7075 Aluminio is difficult to weld and can suffer from cracking and brittleness after welding.
- maquinabilidad:
- 6061-Aluminio T6 is known for its good machinability, which is better than that of 7075 Aluminio, although 7075 still offers acceptable machinability for most applications.
- Densidad:
- 7075 Aluminio is slightly denser (2.81 g/cm³) than 6061-Aluminio T6 (2.70 g/cm³), which can affect weight-sensitive applications.
- Conductividad térmica:
- 6061-Aluminio T6 has better thermal conductivity (167 W/m·K) compared to 7075 Aluminio (130 W/m·K), making it preferable for heat-exchange applications.
Comparison of Uses
| Application Area | 6061-Aluminio T6 | 7075 Aluminio |
|---|
| Aeroespacial | Aircraft fittings, tanques de combustible, and fuselage structures | High-stress structural parts like aircraft wings, fuselage frames, and landing gear |
| Automotor | Chassis, wheel spacers, and engine components | Racing components like suspension parts, gears, and shafts |
| Marina | Boat hulls, mástiles, y accesorios marinos | Not typically used due to poor corrosion resistance |
| General Construction | Structural components, tubería, y marcos | Not common; only when high strength is needed |
| Sports Equipment | cuadros de bicicleta, camping equipment, and scuba tanks | High-performance bicycle components, climbing equipment |
| Electrónica | Heat sinks and electrical fittings | Not typically used; 6061 is preferred for thermal applications |
| Bienes de consumo | Ladders, muebles, and household items | Premium products where high strength is desired, such as rugged outdoor gear |
Summary
- 6061-Aluminio T6 is more versatile, easier to work with, y tiene una excelente resistencia a la corrosión, haciéndolo adecuado para una amplia gama de aplicaciones, including marine, automotor, construcción, y electronica.
- 7075 Aluminio 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.
