7075 Aluminum Round Tube

7075 Aluminum Round Tube is a high-strength aluminum alloy tubing made from 7075 aluminum alloy. It is widely used in aerospace, military, racing, and high-performance mechanical equipment fields due to its excellent strength and corrosion resistance.

7075 Aluminum Round Tube Properties

Property	Value	Description
Tensile Strength	Above 570 MPa (can reach up to 700 MPa with certain treatments)	The tensile strength of 7075 aluminum alloy is close to that of steel, but its density is much lower than steel, offering an excellent strength-to-weight ratio.
Yield Strength	Approximately 505 MPa	The yield strength of 7075 aluminum alloy allows it to withstand high loads without permanent deformation.
Ductility	Relatively low	Despite its high strength, 7075 aluminum alloy has relatively low ductility, so structural design must consider this limitation.
Corrosion Resistance	Good	7075 aluminum alloy has good corrosion resistance, especially in aerospace and other high-demand environments. It effectively resists corrosion from the atmosphere, seawater, and chemicals. However, in certain special cases, surface treatments (such as anodizing) may be needed to enhance its corrosion resistance.
Fatigue Resistance	Excellent	7075 aluminum alloy exhibits excellent fatigue resistance under dynamic loads and cyclic stress, making it particularly suitable for components that experience repeated loading.

7075 Aluminum Round Tube Processing Methods

Heat Treatment: The processing of 7075 aluminum alloy is relatively complex and typically requires heat treatment (such as T6 treatment) to optimize its mechanical properties. T6 treatment typically involves solution heat treatment followed by artificial aging, which achieves the best hardness and strength of the alloy.
Forming and Extrusion: 7075 aluminum alloy tubing is typically manufactured through extrusion, stretching, or other forming processes. Due to its high strength, specialized tools and equipment may be required during processing.
Weldability: The weldability of 7075 aluminum alloy is relatively poor, especially in its high-strength state. It typically requires preheating or specialized welding techniques to achieve optimal welding results.

7075 Aluminum Round Tube Applications

Aerospace: 7075 aluminum round tubes are widely used in aerospace, particularly in aircraft frames, fuselages, wing spars, landing gear, and other structural components. Its high strength and lightweight properties make it an ideal material for aerospace structures.
Military: 7075 aluminum tubing is also extensively used in the military, such as in weapon systems, fighter aircraft structures, missile systems, and other high-performance equipment. Its strength and corrosion resistance make it suitable for extreme environments.
Racing and High-Performance Machinery: In the racing and high-performance machinery industries, 7075 aluminum round tubes are used in chassis, suspension systems, and vehicle body structures. Its high strength and lightweight properties help improve overall vehicle performance.
Other High-Performance Equipment: 7075 aluminum tubing is also used in high-performance industrial equipment, such as robotic structures, hydraulic systems, precision mechanical components, and more, where materials need both strength and good corrosion resistance.

7075 Aluminum Round Tube Advantages and Limitations

Advantages of 7075 Aluminum Round Tube

High Strength: The tensile strength of 7075 aluminum alloy is close to that of steel, but it is much lighter than steel, providing necessary strength and rigidity for structural components.
Lightweight: Compared to steel, 7075 aluminum alloy has a lower density, making it ideal for applications where weight reduction is essential without sacrificing strength.
Corrosion Resistance: 7075 aluminum alloy has good corrosion resistance, making it suitable for aerospace and marine applications.
Fatigue Resistance: Its excellent fatigue resistance makes 7075 aluminum alloy ideal for components that undergo alternating loads.

Limitations of 7075 Aluminum Round Tube

High Cost: Due to its high strength and specialized properties, 7075 aluminum alloy is relatively expensive, making it suitable for high-end applications where performance requirements justify the cost.
Low Ductility: Compared to other aluminum alloys, 7075 has relatively low ductility, which requires special consideration during forming and processing.
Welding Difficulty: Due to its high strength, 7075 aluminum alloy is prone to cracking during welding, requiring special welding techniques.

7075 aluminum round tube, with its extremely high strength, good corrosion resistance, lightweight properties, and excellent fatigue resistance, is widely used in aerospace, military, racing, and other high-performance industrial equipment. Although it is expensive and has poor weldability, its advantages in high-performance structural components make it an irreplaceable material choice.

7075 Aluminum Tube Typical Chemical Composition

Typical Chemical Composition %
Weight %	Si	Fe	Cu	Mn	Mg	CR	Zn	TI	Each	Total
Minimum			1.20		2.10	.18	5.10
Maximum	.40	.50	2.00	.30	2.90	.28	6.10	.20	.05	.15

7075 aluminum tube physical properties

Temper	Wall thickness(mm)	Tensile strength (Mpa)	Yield Strength (Mpa)	Elongation (%)
T6/T651/T6511	≤6.30	≥540	≥485	≥7
	＞6.30~12.50	≥560	≥505	≥7
	＞12.50~70.00	≥560	≥495	≥6
T73/T7351/T73511	1.60~6.30	≥470	≥400	≥5
	＞6.30~35.00	≥485	≥420	≥6
	＞35.00~70.00	≥475	≥405	≥8

7075 Aluminum Round Tube Stock List

Description	Alloy	Temper	Processing method	Profile Shape
0.5" OD x 0.035" Wall x 0.43" ID Aluminum Round Tube 7075-T6-Drawn	7075	T6	Drawn	round tube
1.25" OD x 0.065" Wall x 1.12" ID Aluminum Round Tube 7075-T6-Drawn	7075	T6	Drawn	round tube