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7076

ASTM B209 / AlZn6Mg / 7076 / T61

Chemical Properties % Value
Silicon (Si)0,00 - 0,40
Chromium (Cr)0,18 - 0,28
Manganese (Mn)0,00 - 0,30
Magnesium (Mg)2,10 - 2,90
Copper (Cu)1,20 - 2,00
Titanium (Ti)0,00 - 0,20
Iron (Fe)0,00 - 0,50
Zinc (Zn)5,10 - 6,10
Aluminium (Al)Balance
Physical Properties Value
Density2.84 g/cm³
Melting Point466°C
Thermal Expansion23.2 µm/m.°C
Modulus of Elasticity71 GPa
Thermal Conductivity160 W/m.K
Electrical Resistivity%33 IACS
Mechanical Properties Value
Proof Strength470 MPa
Yield Strength510 MPa
Shear Strength310 MPa
Elongation A50 mm%14
Hardness150 HB
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7076 T61 Aluminum Alloy is a material notable for its high strength, excellent fatigue resistance, and good thermal stability. 7076, a zinc-heavy alloy, is widely used in the aerospace, automotive, and defense industries due to its superior mechanical properties. The T61 temper indicates that the alloy undergoes a solution heat treatment followed by controlled aging to enhance its strength and durability. This makes it suitable for structures and components subjected to heavy loads and harsh operating conditions.

This alloy is commonly used in aircraft structures, automotive chassis, sports equipment, and other high-performance applications. It offers a suitable option for anodizing; forming a protective oxide layer on the surface increases corrosion resistance and provides an aesthetic appearance. However, due to its high zinc content, care may be required during the anodizing process. Its weldability is limited; the high strength can increase the risk of cracking during welding. Therefore, careful processing and appropriate filler material selection are important in welding applications.

7076 T61 aluminum alloy has certain limitations in forming, as its high strength can make complex shaping operations challenging. However, with appropriate techniques, it can be successfully bent and shaped. Thanks to its fatigue resistance and mechanical stability, it performs excellently in high-vibration environments and ensures long-term reliability in components subjected to dynamic loads.

Corrosion resistance is naturally moderate; therefore, for use in aggressive environments, additional surface treatments or coatings are generally recommended. Its advantages include high strength, fatigue resistance, and thermal stability, while its disadvantages include limited weldability, complex forming requirements, and moderate corrosion resistance. These properties make 7076 T61 an ideal material for applications requiring high mechanical durability and performance.
 

MATERIAL COMPOSITION STANDARDS

7076 T61 can be produced according to the following standards:
• 7076 T61 Sheet / Plate; UNS A97076, ASTM B209

 

                                    

Characteristic Properties of 7076 T61: 

  • Strength: Excellent
  • Machinability: Very Good
  • Weldability: Moderate
  • Formability: Average
  • Corrosion Resistance: Poor
  • Heat Treatment: Yes
     

Common Applications of 7076 T61: 
Helicopter rotor blades,
Automotive chassis manufacturing,
High-strength aerospace applications.

 

STOCK
Available as 7076 T61 sheet.

  • Sheet / Plate
DELIVERY:
Mechanical Properties
Thickness (mm) Proof Strength (Min.) Yield Strength (Min.) Elongation A50 mm %
Over 0.4 up to & incl. 12.5 145 MPa 275 MPa %10