6061 t6 alumiini vs 7075 alumiini
6061 t6 alumiini vs 7075
Alumiiniseokset 6061-T6 ja 7075 käytetään laajalti teknisissä sovelluksissa, mutta niillä on erilaiset ominaisuudet ja ne sopivat eri tarkoituksiin. Alla on yksityiskohtainen vertailu näistä kahdesta lejeeringistä niiden mekaanisten ominaisuuksien suhteen, fysikaaliset ominaisuudet, ja tyypillisiä käyttötarkoituksia:
Vertailu 6061-T6 ja 7075 Alumiini
| Omaisuus | 6061-T6 alumiinia | 7075 Alumiini |
|---|
| Composition | 0.8-1.2% Mg, 0.4-0.8% Ja, 0.15-0.4% Cu, 0.04-0.35% Cr | 5.1-6.1% Zn, 2.1-2.9% Mg, 1.2-2.0% Cu, 0.18-0.28% Cr |
| Vetolujuus | 310 MPa (45 ksi) | 572 MPa (83 ksi) |
| Tuottovoima | 275 MPa (40 ksi) | 503 MPa (73 ksi) |
| Break-venymä | 12% | 11% |
| Kovuus (Brinell) | 95 HB | 150 HB |
| Elastisuusmoduuli | 68.9 GPa (10,000 ksi) | 71.7 GPa (10,400 ksi) |
| Tiheys | 2.70 g/cm³ | 2.81 g/cm³ |
| Väsymys Vahvuus | 96 MPa (14 ksi) | 159 MPa (23 ksi) |
| Lämmönjohtavuus | 167 W/m·K | 130 W/m·K |
| Korroosionkestävyys | Erinomainen | Fair to Poor (without protective coating) |
| Hitsattavuus | Erinomainen | Huono |
| Koneistettavuus | Hyvä | Fair to Good |
| Lämpökäsittely | Heat treatable to T6 condition | Heat treatable to T6 or T73 condition |
Key Differences in Properties
- Strength:
- 7075 Alumiini 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.
- Korroosionkestävyys:
- 6061-T6 alumiinia on erinomainen korroosionkestävyys, especially against atmospheric and marine conditions, while 7075 Alumiini has fair to poor corrosion resistance and often requires a protective coating or anodizing for use in corrosive environments.
- Hitsattavuus:
- 6061-T6 alumiinia is highly weldable, making it suitable for structures requiring frequent welding. 7075 Alumiini is difficult to weld and can suffer from cracking and brittleness after welding.
- Koneistettavuus:
- 6061-T6 alumiinia is known for its good machinability, which is better than that of 7075 Alumiini, although 7075 still offers acceptable machinability for most applications.
- Tiheys:
- 7075 Alumiini is slightly denser (2.81 g/cm³) than 6061-T6 alumiinia (2.70 g/cm³), which can affect weight-sensitive applications.
- Lämmönjohtavuus:
- 6061-T6 alumiinia has better thermal conductivity (167 W/m·K) compared to 7075 Alumiini (130 W/m·K), making it preferable for heat-exchange applications.
Comparison of Uses
| Application Area | 6061-T6 alumiinia | 7075 Alumiini |
|---|
| Aerospace | Aircraft fittings, fuel tanks, and fuselage structures | High-stress structural parts like aircraft wings, fuselage frames, and landing gear |
| Automotive | 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, ja kehyksiä | Not common; only when high strength is needed |
| Sports Equipment | Pyörän rungot, camping equipment, and scuba tanks | High-performance bicycle components, climbing equipment |
| Electronics | Heat sinks and electrical fittings | Not typically used; 6061 is preferred for thermal applications |
| Consumer Goods | Ladders, huonekalut, and household items | Premium products where high strength is desired, such as rugged outdoor gear |
Summary
- 6061-T6 alumiinia is more versatile, easier to work with, and has excellent corrosion resistance, making it suitable for a wide range of applications, including marine, autoteollisuus, construction, and electronics.
- 7075 Alumiini 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.
