What Are the Material Properties of 7075 O Aluminum

7075 Aluminum Alloy

GNEE supplies 7075 aluminum alloy, a high-strength aluminum grade with zinc as its primary alloying element. It is one of the strongest commercially available aluminum alloys, offering strength levels comparable to many types of steel. The alloy demonstrates good fatigue resistance and average machinability, though its corrosion resistance is lower than that of many other aluminum alloys. While 7075 aluminum can be formed using conventional methods, it requires greater precision and control during processing. It is mainly used in demanding applications where lower-cost aluminum alloys cannot meet performance requirements, particularly in aircraft structural components.

7075-O Aerospace Aluminum: High Strength with Superior Formability

7075-O aerospace aluminum, supplied by GNEE, is a high-performance alloy widely used in the aerospace industry due to its excellent toughness, formability, and reliable corrosion resistance. It is particularly suitable for weight-sensitive applications such as aircraft, spacecraft, and other advanced transportation systems where both strength and manufacturability are essential.

aluminum plate 7075

Product Features

High Strength:
7075-O aluminum offers a tensile strength of approximately 228 MPa and a yield strength of about 83 MPa, providing dependable performance in moderately high-stress environments prior to heat treatment.

Excellent Formability:
In the annealed (O) condition, this alloy is easy to form and bend, allowing it to be shaped into complex geometries without cracking.

Good Corrosion Resistance:
The alloy exhibits good resistance to corrosion, ensuring durability and long service life in demanding and harsh operating environments.

Good Weldability:
Compared with heat-treated tempers, 7075-O aluminum is more weldable, making it suitable for applications that require welding during fabrication.

Property	7075-O Aluminum	7075-T6-T62 Aluminum	7075-T73 Aluminum
Density	2.7–2.85 g/cm3	2.7–2.85 g/cm3	2.7–2.85 g/cm3
Tensile strength	228 MPa	572 MPa	505 MPa
Yield strength	103 MPa	503 MPa	435 MPa
Modulus of elasticity	71.7 GPa	71.7 GPa	72.4 GPa
Brinell hardness scale (500g weight, 10 mm ball)	60	150	128
Elongation at break (12.7 mm test piece)	16%	19%	5%
Shear modulus	26.9 GPa	26.9 GPa	27 GPa
Shear strength	152 GPa	331 GPa	296 GPa
Fatigue strength	N/A	159 MPa	117 MPa
Thermal expansion coefficient	23.6 µm/m°C	23.6 µm/m°C	23.2 µm/m°C
Solidus	477 °C	477 °C	477 °C
Liquidus	635 °C	635 °C	635 °C
Annealing temperature	413 °C	413 °C	413 °C
Solution temperature	466–482 °C	466–482 °C	256 °C
Thermal conductivity	173 W/mK	130 W/mK	151 W/mK
Specific heat capacity	0.96 KJ/Kg°C	0.96 KJ/Kg°C	0.96 KJ/Kg°C
Applications	Military components and equipment, aircraft skins, bicycle parts, rocking climbing equipment, archery components, automotive parts	Same	Same