7050 Aluminium Alloy

7050 Aluminium Alloy

Aluminium alloy 7050 is an aerospace, heat treatable alloy. It has high mechanical strength, good stress corrosion cracking resistance and toughness at subzero temperatures. Aluminium 7050 is particularly suited for heavy plate applications such as fuselage frames, bulkheads, wing skins and aircraft structures.

Available in two tempers, T7451 and T7651, 7050 aluminium alloy has the electrical conductivity 40% of copper. Welding should be avoided with Aluminum 7050, as the process weakens the alloy. Aluminum 7050 alloy can be heat treated at 477°C (890°F) and cold worked using conventional methods. 7050 alloy is aged using two-stage heat treatment. It is heated at 122°C (250°F) for 3 to 6 h. It is again heated at 163°C (325°F) for 15 h followed by cooling in air. 7050 aluminium can be hardened by precipitation heat treatment.

Teknika4 supplies 7050 aluminium alloy in bar, plate and sheet. All of the Aluminium 7050 sold by Teknika4 meets strict industry standards like those from AMS, ASTM, QQ, and UNS.

Typical Physical Properties of 7050 Aluminium Alloy Metric Imperial
Density 2.6-2.8 g/cm3 0.0939-0.101 lb/in3
Melting Point 494°C 920°F
Typical Mechanical Properties of 7050 Aluminium Alloy Metric Imperial
Tensile strength 515 MPa 74695 psi
Yield strength 455 MPa 65992 psi
Fatigue strength 240 MPa 34809 psi
Elastic modulus 70-80 GPa 10153-11603 ksi
Poisson's ratio 0.33 0.33
Elongation 11% 11%
Typical Chemical Properties of 7050 Aluminium Alloy
Al 89%
Cu 2.3%
Mg 2.3%
Zn 6.2%
Zr 0.12%
Thermal Properties of 7050 Aluminium Alloy
Thermal conductivity 180 W/mK 25ºC
Alloy Designation US US Federal Europa UK Other
7050 AMS 4050 7050-T7451 plate W.S. 3.4144 ABS 5239
7050 AMS 4107 7050-T74 die forgings EN 2689 AlZn6CuMgZr
7050 AMS 4108 7050-T7452 hand forgings EN 3338 7050-T7451 Bar AIR 9048.740 7050-T7451 plate
7050 AMS 4201 7050-T7452 die forgings EN 3982 7050-T7451 plate
7050 AMS 4340 7050-T76511 extrusions EN 3983 7050-T7651 plate
7050 AMS 4342 7050-T74511 extrusions EN 4449 7050-T76 sheet
EN 4450F 7050-T762 sheet