Aluminum 7050-T7651

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Aluminum 7050-T7651
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; ISO AlZn6CuMgZr; Aluminium 7050-T7651; AA7050-T7651; Al7050-T7651
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Physical Properties	Original Value	Comments

Density	2.83 g/cc	AA; Typical

Mechanical Properties	Original Value	Comments
Hardness, Brinell	147	500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop	187	Converted from Brinell Hardness Value
Hardness, Rockwell A	53	Converted from Brinell Hardness Value
Hardness, Rockwell B	86	Converted from Brinell Hardness Value
Hardness, Vickers	171	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	80.0 ksi	AA; Typical
Tensile Strength, Yield	71.0 ksi	AA; Typical
Elongation at Break	11 % @Diameter 12.7 mm	AA; Typical
Modulus of Elasticity	10400 ksi	AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poissons Ratio	0.33
Fracture Toughness	20.9 MPa-m½	average; S-L
	26.0 MPa-m½	K(IC) in S-L Direction
	26.4 MPa-m½	average; T-L
	30.8 MPa-m½	average; L-T
	31.0 MPa-m½	K(IC) in T-L Direction
	34.0 MPa-m½	K(IC) in L-T Direction
Shear Modulus	26.9 GPa
Shear Strength	47.0 ksi	AA; Typical

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000440 ohm-cm

Thermal Properties	Original Value	Comments
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
Specific Heat Capacity	0.860 J/g-°C
Thermal Conductivity	153 W/m-K
Melting Point	910 - 1165 °F	AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness
Solidus	910 °F	AA; Typical
Liquidus	1165 °F	AA; Typical

Processing Properties	Original Value	Comments
Annealing Temperature	775 °F
Solution Temperature	890 °F
Aging Temperature	250 - 350 °F

Component Elements Properties	Original Value	Comments
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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MA7050T765 / 9578

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