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Aluminum 7050-T74
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 7000 Series Aluminum Alloy

Material Notes: 7050 has very high strength coupled with high resistance to exfoliation corrosion and stress-corrosion cracking, high fracture toughness, and fatigue resistance. This leads to applications in aircraft structures.

Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

Composition Notes:
Composition information provided by the Aluminum Association and is not for design.

Key Words: UNS A97050; Aluminium 7050-T74; AA7050-T74; Al7050-T74
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 2.83 g/ccAA; Typical
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 432 MPa
@Thickness 50.83 - 102 mm
Die forgings; Transverse
 455 MPa
@Thickness 101.6 - 127 mm
Die forgings; Transverse
 455 MPa
@Thickness 127.0 - 152 mm
Die forgings; Transverse
 469 MPa
@Thickness <=50.8 mm
Die forgings; Transverse
 483 MPa
@Thickness 101.6 - 127 mm
Die forgings; Longitudinal
 483 MPa
@Thickness 127.0 - 152 mm
Die forgings; Longitudinal
 490 MPa
@Thickness 50.83 - 102 mm
Die forgings; Longitudinal
 496 MPa
@Thickness <=50.8 mm
Die forgings; Longitudinal
Tensile Strength, Yield 372 MPa
@Thickness 101.6 - 127 mm
Die forgings; Transverse
 372 MPa
@Thickness 127.0 - 152 mm
Die forgings; Transverse
 379 MPa
@Thickness 50.83 - 102 mm
Die forgings; Transverse
 386 MPa
@Thickness <=50.8 mm
Die forgings; Transverse
 405 MPa
@Thickness 127.0 - 152 mm
Die forgings; Longitudinal
 414 MPa
@Thickness 101.6 - 127 mm
Die forgings; Longitudinal
 421 MPa
@Thickness 50.83 - 102 mm
Die forgings; Longitudinal
 427 MPa
@Thickness <=50.8 mm
Die forgings; Longitudinal
Elongation at Break 3.0 %
@Thickness 101.6 - 127 mm
Die forgings; Transverse
 3.0 %
@Thickness 127.0 - 152 mm
Die forgings; Transverse
 4.0 %
@Thickness 50.83 - 102 mm
Die forgings; Transverse
 5.0 %
@Thickness <=50.8 mm
Die forgings; Transverse
 7.0 %
@Thickness <=50.8 mm
Die forgings; Longitudinal
 7.0 %
@Thickness 50.83 - 102 mm
Die forgings; Longitudinal
 7.0 %
@Thickness 101.6 - 127 mm
Die forgings; Longitudinal
 7.0 %
@Thickness 127.0 - 152 mm
Die forgings; Longitudinal
Compressive Yield Strength 372 MPa
@Thickness 127.0 - 152 mm
Die forgings; Transverse
 379 MPa
@Thickness 101.6 - 127 mm
Die forgings; Transverse
 393 MPa
@Thickness 76.23 - 102 mm
Die forgings; Transverse
 400 MPa
@Thickness <=50.8 mm
Die forgings; Transverse
 427 MPa
@Thickness 127.0 - 152 mm
Die forgings; Longitudinal
 434 MPa
@Thickness <=50.8 mm
Die forgings; Longitudinal
 434 MPa
@Thickness 50.83 - 102 mm
Die forgings; Longitudinal
 434 MPa
@Thickness 101.6 - 127 mm
Die forgings; Longitudinal
Bearing Yield Strength 538 MPa
@Thickness 127.0 - 152 mm
Die forgings; e/d=1.5
 545 MPa
@Thickness 101.6 - 127 mm
Die forgings; e/d=1.5
 558 MPa
@Thickness 50.83 - 102 mm
Die forgings; e/d=1.5
 565 MPa
@Thickness <=50.8 mm
Die forgings; e/d=1.5
 634 MPa
@Thickness 127.0 - 152 mm
Die forgings; e/d=2.0
 641 MPa
@Thickness 101.6 - 127 mm
Die forgings; e/d=2.0
 655 MPa
@Thickness 76.23 - 102 mm
Die forgings; e/d=2.0
 662 MPa
@Thickness <=50.8 mm
Die forgings; e/d=2.0
 669 MPa
@Thickness 101.6 - 127 mm
Die forgings; e/d=1.5; Ultimate
 669 MPa
@Thickness 127.0 - 152 mm
Die forgings; e/d=1.5; Ultimate
 676 MPa
@Thickness 50.83 - 102 mm
Die forgings; e/d=1.5; Ultimate
 683 MPa
@Thickness <=50.8 mm
Die forgings; e/d=1.5; Ultimate
 876 MPa
@Thickness 101.6 - 127 mm
Die forgings; e/d=2.0; Ultimate
 876 MPa
@Thickness 127.0 - 152 mm
Die forgings; e/d=2.0; Ultimate
 889 MPa
@Thickness 76.23 - 102 mm
Die forgings; e/d=2.0; Ultimate
 903 MPa
@Thickness <=50.8 mm
Die forgings; e/d=2.0; Ultimate
Shear Strength 283 MPa
@Thickness 50.83 - 102 mm
 283 MPa
@Thickness 101.6 - 127 mm
 283 MPa
@Thickness 127.0 - 152 mm
 290 MPa
@Thickness <=50.8 mm
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 25.0 ohm-cir-mil/ft
@Temperature 20.0 °C
AA; Typical
 
Thermal PropertiesOriginal ValueComments
CTE, linear 12.8 µin/in-°F
@Temperature 20.0 - 100 °C
AA; Typical; average over range
 21.7 µm/m-°C
@Temperature -50.0 - 20.0 °C
 23.5 µm/m-°C
@Temperature 20.0 - 100 °C
 24.4 µm/m-°C
@Temperature 20.0 - 200 °C
 25.4 µm/m-°C
@Temperature 20.0 - 300 °C
Thermal Conductivity 1090 BTU-in/hr-ft²-°FAA; Typical at 77°F
Melting Point 910 - 1165 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness
Solidus 910 °FAA; Typical
Liquidus 1165 °FAA; Typical
 
Processing PropertiesOriginal ValueComments
Annealing Temperature 775 °F
Solution Temperature 890 °F
Aging Temperature 250 - 350 °F
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 87.3 - 90.3 %As remainder
Chromium, Cr <= 0.04 %
Copper, Cu 2.0 - 2.6 %
Iron, Fe <= 0.15 %
Magnesium, Mg 1.9 - 2.6 %
Manganese, Mn <= 0.10 %
Other, each <= 0.05 %
Other, total <= 0.15 %
Silicon, Si <= 0.12 %
Titanium, Ti <= 0.06 %
Zinc, Zn 5.7 - 6.7 %
Zirconium, Zr 0.08 - 0.15 %

References for this datasheet.

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