Aluminum 7050-T73511; 7050-T73510

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Aluminum 7050-T73511; 7050-T73510
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; Aluminum 7050-T73510; AA7050-T73511; Al7050-T73511
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Physical Properties	Metric	English	Comments

Density	2.83 g/cc	0.102 lb/in³	AA; Typical

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	132	132	500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop	166	166	Converted from Brinell Hardness Value
Hardness, Rockwell A	49.8	49.8	Converted from Brinell Hardness Value
Hardness, Rockwell B	80	80	Converted from Brinell Hardness Value
Hardness, Vickers	151	151	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	496 MPa	72000 psi	AA; Typical
Tensile Strength, Yield	434 MPa	63000 psi	AA; Typical
Elongation at Break	12 % @Diameter 12.7 mm	12 % @Diameter 0.500 in	AA; Typical
Modulus of Elasticity	71.7 GPa	10400 ksi	AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poissons Ratio	0.33	0.33
Fracture Toughness	26.4 MPa-m½	24.0 ksi-in½	average; S-L
	31.9 MPa-m½	29.0 ksi-in½	average; T-L
	45.1 MPa-m½	41.0 ksi-in½	average; L-T
Shear Modulus	26.9 GPa	3900 ksi
Shear Strength	290 MPa	42100 psi	Calculated value.

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000430 ohm-cm	0.00000430 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	21.7 µm/m-°C @Temperature -50.0 - 20.0 °C	12.1 µin/in-°F @Temperature -58.0 - 68.0 °F
	23.5 µm/m-°C @Temperature 20.0 - 100 °C	13.1 µin/in-°F @Temperature 68.0 - 212 °F
	23.6 µm/m-°C @Temperature 20.0 - 100 °C	13.1 µin/in-°F @Temperature 68.0 - 212 °F
	24.4 µm/m-°C @Temperature 20.0 - 200 °C	13.6 µin/in-°F @Temperature 68.0 - 392 °F
	25.4 µm/m-°C @Temperature 20.0 - 300 °C	14.1 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.860 J/g-°C	0.206 BTU/lb-°F
Thermal Conductivity	155 W/m-K	1080 BTU-in/hr-ft²-°F	Estimated from other heat treatments.
Melting Point	524 - 635 °C	975 - 1180 °F	For homogeneous wrought material. Eutectic for nonhomogeneous wrought or as-cast material that has not been heat treated is 465ºC.
Solidus	524 °C	975 °F	For homogeneous wrought material. Eutectic for nonhomogeneous wrought or as-cast material that has not been heat treated is 465ºC.
Liquidus	635 °C	1180 °F

Processing Properties	Metric	English	Comments
Annealing Temperature	413 °C	775 °F
Solution Temperature	477 °C	890 °F
Aging Temperature	121 - 177 °C	250 - 350 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	87.3 - 90.3 %	87.3 - 90.3 %	As remainder
Chromium, Cr	<= 0.04 %	<= 0.04 %
Copper, Cu	2.0 - 2.6 %	2.0 - 2.6 %
Iron, Fe	<= 0.15 %	<= 0.15 %
Magnesium, Mg	1.9 - 2.6 %	1.9 - 2.6 %
Manganese, Mn	<= 0.10 %	<= 0.10 %
Other, each	<= 0.05 %	<= 0.05 %
Other, total	<= 0.15 %	<= 0.15 %
Silicon, Si	<= 0.12 %	<= 0.12 %
Titanium, Ti	<= 0.06 %	<= 0.06 %
Zinc, Zn	5.7 - 6.7 %	5.7 - 6.7 %
Zirconium, Zr	0.08 - 0.15 %	0.08 - 0.15 %

References for this datasheet.

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MA7050T735 / 9575

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