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7050

AMS 4201 / AlZn6CuMgZr / 7050 / T7651

Chemical Properties % Value
Silicon (Si)0,00 - 0,12
Tin (Sn)0,00 - 0,00
Chromium (Cr)0,00 - 0,04
Manganese (Mn)0,00 - 0,10
Magnesium (Mg)1,90 - 2,60
Copper (Cu)2,00 - 2,60
Lead (Pb)0,00 - 0,00
Titanium (Ti)0,08 - 0,21
Iron (Fe)0,00 - 0,15
Zinc (Zn)5,70 - 6,70
Nickel (Ni)0,00 - 0,00
Aluminium (Al)Balance
Titanium + Zirconium (Ti+Zr)0,08 - 0,15
Physical Properties Value
Density2,83 g/cm³
Melting Point488 °C
Thermal Expansion23.5 µm/m.°C
Modulus of Elasticity71.7 GPa
Thermal Conductivity153 W/m.K
Electrical Resistivity35 % IACS
Mechanical Properties Value
Proof Strength500 MPa
Yield Strength552 MPa
Shear Strength324 MPa
Elongation A50 mm10 %
Hardness147 HB
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The 7050 T7651 aluminum alloy is known for its high strength, durability, and excellent corrosion resistance. As part of the aluminum-zinc alloy family, it is widely used in structural components requiring high performance, particularly in aerospace, aviation, and military applications. The T7651 temper is achieved through special heat treatments, which provide the alloy with high strength and stress resistance while maintaining its machinability. These properties make the 7050 T7651 alloy ideal for heavy-load applications requiring high strength and durability.

The anodizing suitability of 7050 T7651 aluminum alloy is limited. Its high zinc content prevents the formation of an effective oxide layer during anodizing, making this method unsuitable for protective coating purposes. Therefore, other coating methods are typically used for protection. Regarding weldability, the 7050 T7651 alloy requires careful processing during welding. The high zinc content increases the risk of cracking during welding, which must be minimized using appropriate welding techniques and suitable filler materials.

In terms of bending and forming, the 7050 T7651 aluminum alloy presents some challenges due to its high strength. However, successful bending and forming can be achieved with correct processing techniques. Additionally, the 7050 T7651 alloy is suitable for use in high-vibration environments. Its high elastic modulus and durability make it ideal for components such as cylinder blocks, chassis, and other parts exposed to vibrations.

Regarding corrosion resistance, the 7050 T7651 aluminum alloy shows exceptional resistance, especially against seawater and humid environments. This makes it an ideal material for marine applications and equipment exposed to moisture. The advantages of the 7050 T7651 alloy include high strength, durability, and lightweight, while its disadvantages include limited anodizing suitability and welding difficulties.

 

ALLOY SPECIFICATIONS
7050 T7651 can be supplied according to the following standards:
• 7050 T7651 Plate; EN 3983, WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr, AMS 4201
• 7050 T7651 Extruded Rod; WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr
• 7050 T7651 Extruded Bar; WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr
• 7050 T7651 Extruded Wire; WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr
• 7050 T7651 Extruded Tube; WNR 3.4144, UNS A97050, ISO AlZn6CuMgZr

 

Selection Criteria for 7050 T7651

  • Strength: Very Good
  • Machinability: Suitable
  • Weldability: Poor
  • Formability: Moderate
  • Corrosion Resistance: Excellent
  • Heat Treatable: Yes
     

Common Applications for 7050 T7651
In commercial and military aircraft,
Aircraft wings and fuselage structures,
Aircraft and ship bulkheads.

 

Supply Forms
7050 T7651 is produced and supplied in plate/sheet, rod/bar, and tube/profile forms.

  • Rod / Round Rod / Bar
  • Plate
  • Sheet
  • Tube / Profile
DELIVERY:
Mechanical Properties
Thickness (mm) Proof Strength (Min.) Yield Strength (Min.) Elongation A50 mm %
Over 6.3 up to & incl. 51 441 MPa 510 MPa 9
Over 51 up to & incl. 76 434 MPa 503 MPa 8
Over 76 up to & incl. 102 427 MPa 496 MPa 6
Over 102 up to & incl. 127 421 MPa 490 MPa 5
Over 127 up to & incl. 152 414 MPa 483 MPa 4
Over 152 up to & incl. 178 407 MPa 476 MPa 4
Over 178 up to & incl. 203 400 MPa 469 MPa 4