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7050

ASTM B221 / AlZn6CuMgZr / 7050 / T76

Chemical Properties % Value
Silicon (Si)0,00 - 0,12
Chromium (Cr)0,00 - 0,04
Manganese (Mn)0,00 - 0,10
Magnesium (Mg)1,90 - 2,60
Copper (Cu)2,00 - 2,60
Titanium (Ti)0,08 - 0,21
Iron (Fe)0,00 - 0,15
Zinc (Zn)5,70 - 6,70
Aluminium (Al)Balance
Physical Properties Value
Density2,80 g/cm³
Melting Point610 °C
Thermal Expansion21.7 µm/m.°C
Modulus of Elasticity71 GPa
Thermal Conductivity153 W/m.K
Electrical Resistivity35 % IACS
Mechanical Properties Value
Proof Strength490 MPa
Yield Strength552 MPa
Shear Strength324 MPa
Elongation A50 mm11 %
Hardness147 HB

The 7050 T76 aluminum alloy is known for its high strength, excellent corrosion resistance, and outstanding durability. The T76 temper, achieved through a specialized heat treatment process, provides the alloy with enhanced hardness, making it particularly ideal for applications in aerospace, defense, and other high-performance industries. Additionally, 7050 T76 is suitable for anodizing, which not only enhances the surface appearance but also improves its corrosion resistance, making it ideal for long-lasting performance in harsh environments.

In terms of weldability, 7050 T76 can be successfully welded using proper techniques. However, due to its high hardness, welding requires careful attention and the application of correct heat treatment and techniques. Regarding bending, 7050 T76 aluminum is more difficult to bend due to its increased hardness, but with the right machinery and techniques, it can still be shaped. However, the bending process requires careful handling to avoid any issues.

The corrosion resistance of 7050 T76 is exceptional, especially in harsh environments such as seawater, making it ideal for maritime and outdoor applications. Additionally, 7050 T76 is well-suited for use in high-vibration environments, which makes it advantageous for industries like aerospace, automotive, and defense. Its high durability and long-lasting performance enhance the reliability of 7050 T76 in these demanding applications.

The advantages of 7050 T76 aluminum alloy include high mechanical strength, corrosion resistance, anodizing compatibility, weldability, and suitability for high-vibration environments. However, its high hardness and strength can create challenges during welding and bending processes. Additionally, this alloy may not be as easy to machine as more flexible alloys. Despite these challenges, 7050 T76 is an excellent choice for industrial applications requiring high performance and durability.

 

ALLOY DESIGNATIONS
 
7050 T76 has the following standard designations and specifications.
 
Plates and sheets per; 7050 T76, EN 4449, WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr, 
 
Extruded Round/Flat Bar and Tubes,Wires per; 7050 T76WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr

 

Choosing Factors for 7050 T76

  • Strength: Excellent
  • Machining: Okay
  • Weldability: Low
  • Formability: Medium
  • Corrosion Resistance: Very good
  • Heat Treating: Yes
 

Some Well-Known Applications for 7050 T76

As fasteners in airplanes and aircrafts,

In the automotive sector,

Also used in the nuclear industry.

 

SUPPLIED FORMS
 
7050 T76 is produced/supplied in plate/sheet round/flat bar and tube/profile forms.
  • Rod / Round Bar / Flat Bar
  • Plate
  • Sheet
  • Tube/Profile
DELIVERY: