7075 T651 Aluminum Plate

7075-T651 aluminum is a high-strength aluminum alloy, belonging to the aluminum-zinc alloy series, widely used in aerospace, automotive, military, and other high-strength applications. 7075 aluminum has exceptionally high strength, even higher specific strength than many steels. In the T651 condition, 7075 aluminum undergoes a series of heat treatment steps, including solution heat treatment, stress relief, and artificial aging, to ensure optimal strength and stability.

T651 Heat Treatment

Solution Heat Treatment: The aluminum alloy is heated to the solution temperature and rapidly cooled to dissolve certain elements in the alloy.
Stress Relief: To eliminate internal stresses generated during the heat treatment process, the 7075 aluminum plate is stretched by a certain amount for stress relief. This helps improve the material's processing stability.
Artificial Aging: Finally, by aging the alloy at high temperatures, the dissolved substances in the aluminum alloy precipitate, thereby increasing its strength and hardness.

7075 T651 Aluminum Plate Specification

Dimension Name	Specification
Thickness	0.25
Max Width	48
Max Length	120
Alloy	7075
Temper	T651
Material	Aluminum
Shape	Sheet/Plate
Custom Cut Warehouse	1

7075 T651 Aluminum Plate Mechanical Properties

Property	Value
Ultimate Tensile Strength KSI	80
Density g/cm^3	3
Elongation % in 2 in.	8
Yield Tensile Strength KSI	67
Brinell Hardness 500 kg load	150
Rockwell Hardness B Scale	87
Melting Point °F	890 - 1180
Shear Strength KSI	48
Machinability %	70
Electrical Conductivity % IACS	33

Chemistry Information 7075 Aluminum

Element	Percentage
Al	90
Cr	0.18 - 0.28
Cu	1.2 - 2
Fe	0.5 max
Mg	2.1 - 2.9
Mn	0.3 max
Si	0.4 max
Ti	0.2 max
Zn	5.1 - 6.1
Zr+Ti	0.25 max

7075 T651 Aluminum Corrosion Resistance

Although 7075-T651 aluminum alloy has moderate corrosion resistance, its anti-corrosion ability is lower compared to some other aluminum alloys (such as 5052 or 5083). Therefore, in applications requiring extremely high corrosion resistance, additional surface treatments, such as anodizing or coating, may be necessary. For most aerospace and automotive applications, its corrosion resistance is sufficient to meet the requirements.

7075 T651 Aluminum Machinability

7075-T651 aluminum plate has good machinability, making it particularly suitable for precision machining, such as CNC machining, turning, milling, etc. Due to its high strength, it provides stable performance in both thin and thick plate applications while also offering good surface finish. It is suitable for cutting, welding (although care must be taken with cracking during welding), milling, and other machining processes.

7075 T651 Aluminum Applications

7075-T651 aluminum alloy plates are widely used in high-performance structural components, especially in the aerospace and high-performance racing industries.

Application Area	Description
Aerospace	7075-T651 aluminum alloy is widely used in the aerospace industry, especially in aircraft structural components. Due to its exceptional strength and lightweight properties, 7075-T651 aluminum plates are used in the manufacture of fuselage structures, wing beams, vertical tails, wing skins, and other critical parts. These components require extremely high strength and rigidity to ensure flight safety and stability, and 7075-T651 aluminum alloy meets these demands with its outstanding strength and fatigue resistance.
Automotive	In the automotive industry, especially in the high-performance racing sector, 7075-T651 aluminum alloy is used to manufacture key components such as race car bodies, chassis, and suspension systems. Due to the high specific strength of 7075 aluminum alloy, it can provide strength and rigidity while maintaining lightweight properties, which is critical for the handling performance and overall structural safety of the race car. The use of this material effectively reduces weight while improving acceleration and handling stability.
Military	7075-T651 aluminum alloy also holds an important place in military applications, especially in weapon systems and military aviation equipment. Due to its high strength and corrosion resistance, 7075-T651 aluminum alloy is used to manufacture structural components for military aircraft, weapon parts, and other high-performance equipment. It not only provides strong structural support but can also withstand extreme operating conditions, making it a key material in modern military technology.
Shipbuilding	In shipbuilding, 7075-T651 aluminum alloy is often used to manufacture structural components that need to bear high loads and have lightweight characteristics, such as hull frames and support structures. The high strength and corrosion resistance of 7075 aluminum alloy make it an ideal choice for key components in ships, especially in high-performance applications such as fast boats and military vessels. 7075-T651 aluminum alloy helps reduce overall weight while providing sufficient strength support.
Other High-Strength Parts	7075-T651 aluminum alloy is also widely used in the manufacture of high-load mechanical parts and tool frames. Due to its excellent strength, hardness, and rigidity, 7075 aluminum alloy can withstand significant operational loads and maintain good stability and durability in harsh working environments. It is typically used to manufacture the frames, support structures, and tool components of high-precision machinery to ensure long-term reliability and durability under high-strength conditions.

7075 T651 Aluminum Specifications and Certifications

7075-T651 aluminum alloy plates comply with several international standards to ensure their quality and reliability in various applications.

ASTM B209: Standard Specification for Aluminum and Aluminum-Alloy Plates and Sheets.
AMS 4045: Aerospace industry standard for aluminum alloy plates.
AMS QQ-A-250/12: Quality standards for aluminum alloy ingots and forgings.

7075 T651 Aluminum Plate Surface Treatment and Appearance

The surface of 7075-T651 aluminum plate typically presents a semi-smooth appearance with good surface finish. The surface can further undergo anodizing, painting, or other types of surface treatments to improve its corrosion resistance and aesthetic appearance.

7075-T651 aluminum alloy plates are a high-performance, high-strength material suitable for a variety of applications requiring high strength, low weight, and good machinability. While its corrosion resistance is moderate, its exceptional strength makes it an ideal material for aerospace, racing, and military fields.