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	Metric	English	Comments

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

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	147	147	500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop	187	187	Converted from Brinell Hardness Value
Hardness, Rockwell A	53	53	Converted from Brinell Hardness Value
Hardness, Rockwell B	86	86	Converted from Brinell Hardness Value
Hardness, Vickers	171	171	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	552 MPa	80000 psi	AA; Typical
Tensile Strength, Yield	490 MPa	71000 psi	AA; Typical
Elongation at Break	11 % @Diameter 12.7 mm	11 % @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	20.9 MPa-m½	19.0 ksi-in½	average; S-L
	26.0 MPa-m½	23.7 ksi-in½	K(IC) in S-L Direction
	26.4 MPa-m½	24.0 ksi-in½	average; T-L
	30.8 MPa-m½	28.0 ksi-in½	average; L-T
	31.0 MPa-m½	28.2 ksi-in½	K(IC) in T-L Direction
	34.0 MPa-m½	30.9 ksi-in½	K(IC) in L-T Direction
Shear Modulus	26.9 GPa	3900 ksi
Shear Strength	324 MPa	47000 psi	AA; Typical

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000440 ohm-cm	0.00000440 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
	23.0 µm/m-°C @Temperature 20.0 - 100 °C	12.8 µin/in-°F @Temperature 68.0 - 212 °F	AA; Typical; average over range
	23.5 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	153 W/m-K	1060 BTU-in/hr-ft²-°F
Melting Point	488 - 629.4 °C	910 - 1165 °F	AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness
Solidus	488 °C	910 °F	AA; Typical
Liquidus	629.4 °C	1165 °F	AA; Typical

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.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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MA7050T765 / 9578

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