Aluminum 7075-T6; 7075-T651

Subcategory: 7000 Series Aluminum Alloy; Aluminum Alloy; Metal; Nonferrous Metal

Close Analogs:

Composition Notes:
A Zr + Ti limit of 0.25 percent maximum may be used with this alloy designation for extruded and forged products only, but only when the supplier or producer and the purchaser have mutually so agreed. Agreement may be indicated, for example, by reference to a standard, by letter, by order note, or other means which allow the Zr + Ti limit.
Aluminum content reported is calculated as remainder.
Composition information provided by the Aluminum Association and is not for design.

Key Words: Aluminium 7075-T6; Aluminium 7075-T651, UNS A97075; ISO AlZn5.5MgCu; Aluminium 7075-T6; Aluminium 7075-T651; AA7075-T6

Component   Wt. %
Al87.1 - 91.4 
Cr0.18 - 0.28 
Cu1.2 - 2 
FeMax 0.5 
Component   Wt. %
Mg2.1 - 2.9 
MnMax 0.3 
Other, eachMax 0.05 
Other, totalMax 0.15 
Component   Wt. %
SiMax 0.4 
TiMax 0.2 
Zn5.1 - 6.1 

Material Notes:
General 7075 characteristics and uses (from Alcoa): Very high strength material used for highly stressed structural parts. The T7351 temper offers improved stress-corrosion cracking resistance.

Applications: Aircraft fittings, gears and shafts, fuse parts, meter shafts and gears, missile parts, regulating valve parts, worm gears, keys, aircraft, aerospace and defense applications; bike frames, all terrain vehicle (ATV) sprockets.

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

Physical PropertiesMetricEnglishComments
Density2.81 g/cc0.102 lb/in AA; Typical

Mechanical Properties
Hardness, Brinell150150 AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop191191 Converted from Brinell Hardness Value
Hardness, Rockwell A53.553.5 Converted from Brinell Hardness Value
Hardness, Rockwell B8787 Converted from Brinell Hardness Value
Hardness, Vickers175175 Converted from Brinell Hardness Value
Ultimate Tensile Strength572 MPa83000 psi AA; Typical
Tensile Yield Strength503 MPa73000 psi AA; Typical
Elongation at Break11 %11 % AA; Typical; 1/16 in. (1.6 mm) Thickness
Elongation at Break11 %11 % AA; Typical; 1/2 in. (12.7 mm) Diameter
Modulus of Elasticity71.7 GPa10400 ksi AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poisson's Ratio0.330.33 
Fatigue Strength159 MPa23000 psi AA; 500,000,000 cycles completely reversed stress; RR Moore machine/specimen
Fracture Toughness20 MPa-m18.2 ksi-in K(IC) in S-L Direction
Fracture Toughness25 MPa-m22.8 ksi-in K(IC) in T-L Direction
Fracture Toughness29 MPa-m26.4 ksi-in K(IC) in L-T Direction
Machinability70 %70 % 0-100 Scale of Aluminum Alloys
Shear Modulus26.9 GPa3900 ksi 
Shear Strength331 MPa48000 psi AA; Typical

Electrical Properties
Electrical Resistivity5.15e-006 ohm-cm5.15e-006 ohm-cm AA; Typical at 68F

Thermal Properties
CTE, linear 68F23.6 m/m-C13.1 in/in-F AA; Typical; Average over 68-212F range.
CTE, linear 250C25.2 m/m-C14 in/in-F Average over the range 20-300C
Specific Heat Capacity0.96 J/g-C0.229 BTU/lb-F 
Thermal Conductivity130 W/m-K900 BTU-in/hr-ft-F AA; Typical at 77F
Melting Point477 - 635 C890 - 1175 F AA; Typical range based on typical composition for wrought products 1/4 inch thickness or greater. Homogenization may raise eutectic melting temperature 20-40F but usually does not eliminate eutectic melting.
Solidus477 C890 F AA; Typical
Liquidus635 C1175 F AA; Typical

Processing Properties
Annealing Temperature413 C775 F 
Solution Temperature466 - 482 C870 - 900 F 
Aging Temperature121 C250 F 

References for this datasheet.

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