The ultimate tensile strength (UTS) of 7075-T6 aluminum is regularly around 572 MPa (83,000 psi), making it an extremely strong, high-performance alloy that is widely utilized in aerospace and high-stress applications. The yield strength is normally around 503 MPa (73,000 psi).
The following are the usual mechanical properties for 7075-T6:
Ultimate tensile strength is 572 MPa (83,000 psi).
Yield Strength: 503 MPa (73,000 PSI)
Elongation at Break: Approximately 11%
Fatigue strength: approximately 159 MPa (23,000 psi).
Hardness: About 150 Brinell (HBW).
Its high strength-to-weight ratio makes it similar to some steels, but it is also notorious for being prone to stress-corrosion cracking, necessitating protective coatings in important applications.
Over time, continuous advancements in metallurgical technology have driven the development of 7075 aluminum, establishing it as one of the most commonly used high-strength aluminum alloys across a wide range of industries. At GNEE, this alloy remains a core material for demanding engineering applications.
What Is 7075 Aluminum?
7075 aluminum is widely recognized for its outstanding mechanical performance, especially its exceptional strength-to-weight ratio. This alloy plays a critical role in industries where durability, reliability, and performance are essential, including aerospace, military equipment, and high-performance automotive manufacturing. Its ability to endure extreme service conditions while retaining structural stability has made it a fundamental material in modern metal engineering.
Properties of 7075 Aluminum
Chemical Composition
7075 aluminum consists mainly of aluminum, typically ranging from 90.7% to 94.7%, with zinc (5.1% to 6.1%) serving as the primary alloying element. It also contains smaller amounts of magnesium, copper, and chromium. This carefully balanced chemical composition is the key factor behind the alloy's superior strength and toughness.
Mechanical Properties
Tensile Strength: In the T6 temper, 7075 aluminum offers a tensile strength of approximately 83,000 psi (572 MPa).
Yield Strength: The yield strength can reach up to 73,000 psi (503 MPa), placing it among the strongest commercially available aluminum alloys.
Elongation: With an elongation of about 11% in the T6 condition, the alloy maintains good ductility despite its high strength level.
Physical Properties
Density: 7075 aluminum has a density of roughly 0.098 lb/in³ (2.81 g/cm³), making it significantly lighter than many alternative structural metals.
Melting Point: Depending on its exact alloying composition, the melting temperature typically ranges from 875°F to 1,025°F (468°C to 550°C).
