6061 t6 алюміній проти 7075 алюміній
6061 t6 алюміній проти 7075
Aluminum alloys 6061-T6 and 7075 are widely used in engineering applications, but they have different properties and are suited to different purposes. Below is a detailed comparison of these two alloys in terms of their mechanical properties, фізичні властивості, and typical uses:
Comparison Between 6061-T6 and 7075 Алюміній
| Власність | 6061-T6 Aluminum | 7075 Алюміній |
|---|
| Композиція | 0.8-1.2% Mg, 0.4-0.8% І, 0.15-0.4% Cu, 0.04-0.35% кр | 5.1-6.1% Zn, 2.1-2.9% Mg, 1.2-2.0% Cu, 0.18-0.28% кр |
| Міцність на розрив | 310 МПа (45 ksi) | 572 МПа (83 ksi) |
| Межа текучості | 275 МПа (40 ksi) | 503 МПа (73 ksi) |
| Подовження при розриві | 12% | 11% |
| Твердість (Brinell) | 95 HB | 150 HB |
| Модуль пружності | 68.9 ГПа (10,000 ksi) | 71.7 ГПа (10,400 ksi) |
| Щільність | 2.70 г/см³ | 2.81 г/см³ |
| Fatigue Strength | 96 МПа (14 ksi) | 159 МПа (23 ksi) |
| Теплопровідність | 167 Вт/м·К | 130 Вт/м·К |
| Стійкість до корозії | Чудово | Fair to Poor (without protective coating) |
| Зварюваність | Чудово | Poor |
| Оброблюваність | добре | Fair to Good |
| Heat Treatment | Heat treatable to T6 condition | Heat treatable to T6 or T73 condition |
Key Differences in Properties
- Сила:
- 7075 Алюміній is much stronger, with a tensile strength of 572 MPa compared to 310 MPa for 6061-Т6. Це робить 7075 aluminum ideal for high-stress structural applications.
- Стійкість до корозії:
- 6061-T6 Aluminum has excellent corrosion resistance, especially against atmospheric and marine conditions, поки 7075 Алюміній has fair to poor corrosion resistance and often requires a protective coating or anodizing for use in corrosive environments.
- Зварюваність:
- 6061-T6 Aluminum is highly weldable, making it suitable for structures requiring frequent welding. 7075 Алюміній is difficult to weld and can suffer from cracking and brittleness after welding.
- Оброблюваність:
- 6061-T6 Aluminum is known for its good machinability, which is better than that of 7075 Алюміній, although 7075 still offers acceptable machinability for most applications.
- Щільність:
- 7075 Алюміній is slightly denser (2.81 г/см³) than 6061-T6 Aluminum (2.70 г/см³), which can affect weight-sensitive applications.
- Теплопровідність:
- 6061-T6 Aluminum has better thermal conductivity (167 Вт/м·К) compared to 7075 Алюміній (130 Вт/м·К), making it preferable for heat-exchange applications.
Comparison of Uses
| Application Area | 6061-T6 Aluminum | 7075 Алюміній |
|---|
| Аерокосмічна | Aircraft fittings, паливні баки, and fuselage structures | High-stress structural parts like aircraft wings, fuselage frames, and landing gear |
| Автомобільний | 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, and frames | Not common; only when high strength is needed |
| Sports Equipment | Bicycle frames, camping equipment, and scuba tanks | High-performance bicycle components, climbing equipment |
| електроніка | Heat sinks and electrical fittings | Not typically used; 6061 is preferred for thermal applications |
| Споживчі товари | Ladders, меблі, and household items | Premium products where high strength is desired, such as rugged outdoor gear |
Summary
- 6061-T6 Aluminum is more versatile, easier to work with, і має чудову стійкість до корозії, що робить його придатним для широкого спектру застосувань, including marine, автомобільний, будівництво, та електроніка.
- 7075 Алюміній 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.
