6061 t6 알루미늄 대 7075 알류미늄

6061 t6 알루미늄 대 7075

알루미늄 합금 6061-T6 및 7075 엔지니어링 응용 분야에서 널리 사용됩니다., 그러나 그들은 서로 다른 속성을 가지고 있고 서로 다른 목적에 적합합니다.. 다음은 기계적 특성 측면에서 이 두 합금을 자세히 비교한 것입니다., 물리적 특성, 그리고 일반적인 용도:

6061-T6과 6061-T6의 비교 7075 알류미늄

재산6061-T6 알루미늄7075 알류미늄
구성0.8-1.2% 마그네슘, 0.4-0.8% 그리고, 0.15-0.4% Cu, 0.04-0.35% 크롬5.1-6.1% 아연, 2.1-2.9% 마그네슘, 1.2-2.0% Cu, 0.18-0.28% 크롬
인장 강도310 MPa (45 ksi)572 MPa (83 ksi)
항복 강도275 MPa (40 ksi)503 MPa (73 ksi)
파단시 신장12%11%
경도 (브리넬)95 HB150 HB
탄성 계수68.9 GPa (10,000 ksi)71.7 GPa (10,400 ksi)
밀도2.70 g/cm³2.81 g/cm³
피로 강도96 MPa (14 ksi)159 MPa (23 ksi)
열 전도성167 W/m·K130 W/m·K
내식성훌륭한Fair to Poor (without protective coating)
용접성훌륭한Poor
가공성좋은Fair to Good
열처리Heat treatable to T6 conditionHeat treatable to T6 or T73 condition

Key Differences in Properties

  1. 힘:
    • 7075 알류미늄 is much stronger, with a tensile strength of 572 MPa compared to 310 MPa for 6061-T6. 이것은 만든다 7075 aluminum ideal for high-stress structural applications.
  2. 내식성:
    • 6061-T6 알루미늄 내식성이 우수하다, especially against atmospheric and marine conditions, ~하는 동안 7075 알류미늄 has fair to poor corrosion resistance and often requires a protective coating or anodizing for use in corrosive environments.
  3. 용접성:
    • 6061-T6 알루미늄 is highly weldable, making it suitable for structures requiring frequent welding. 7075 알류미늄 is difficult to weld and can suffer from cracking and brittleness after welding.
  4. 가공성:
    • 6061-T6 알루미늄 is known for its good machinability, which is better than that of 7075 알류미늄, although 7075 still offers acceptable machinability for most applications.
  5. 밀도:
    • 7075 알류미늄 is slightly denser (2.81 g/cm³) than 6061-T6 알루미늄 (2.70 g/cm³), which can affect weight-sensitive applications.
  6. 열 전도성:
    • 6061-T6 알루미늄 has better thermal conductivity (167 W/m·K) compared to 7075 알류미늄 (130 W/m·K), making it preferable for heat-exchange applications.

Comparison of Uses

Application Area6061-T6 알루미늄7075 알류미늄
항공우주Aircraft fittings, 연료 탱크, and fuselage structuresHigh-stress structural parts like aircraft wings, fuselage frames, and landing gear
자동차Chassis, wheel spacers, and engine componentsRacing components like suspension parts, gears, and shafts
선박Boat hulls, 돛대, 해양 설비Not typically used due to poor corrosion resistance
General Construction구조적 구성 요소, 관, 그리고 프레임Not common; only when high strength is needed
Sports Equipment자전거 프레임, camping equipment, and scuba tanksHigh-performance bicycle components, climbing equipment
전자제품Heat sinks and electrical fittingsNot typically used; 6061 is preferred for thermal applications
소비재Ladders, 가구, and household itemsPremium products where high strength is desired, such as rugged outdoor gear

Summary

  • 6061-T6 알루미늄 is more versatile, easier to work with, 내식성이 우수하며, 광범위한 응용 분야에 적합하게 만듭니다., including marine, 자동차, 건설, 전자 제품.
  • 7075 알류미늄 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.