Aluminum 7050-T74

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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
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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
Tensile Strength, Ultimate	432 MPa @Thickness 50.83 - 102 mm	62700 psi @Thickness 2.001 - 4.00 in	Die forgings; Transverse
	455 MPa @Thickness 101.6 - 127 mm	66000 psi @Thickness 4.001 - 5.00 in	Die forgings; Transverse
	455 MPa @Thickness 127.0 - 152 mm	66000 psi @Thickness 5.001 - 6.00 in	Die forgings; Transverse
	469 MPa @Thickness <=50.8 mm	68000 psi @Thickness <=2.00 in	Die forgings; Transverse
	483 MPa @Thickness 101.6 - 127 mm	70100 psi @Thickness 4.001 - 5.00 in	Die forgings; Longitudinal
	483 MPa @Thickness 127.0 - 152 mm	70100 psi @Thickness 5.001 - 6.00 in	Die forgings; Longitudinal
	490 MPa @Thickness 50.83 - 102 mm	71100 psi @Thickness 2.001 - 4.00 in	Die forgings; Longitudinal
	496 MPa @Thickness <=50.8 mm	71900 psi @Thickness <=2.00 in	Die forgings; Longitudinal
Tensile Strength, Yield	372 MPa @Thickness 101.6 - 127 mm	54000 psi @Thickness 4.001 - 5.00 in	Die forgings; Transverse
	372 MPa @Thickness 127.0 - 152 mm	54000 psi @Thickness 5.001 - 6.00 in	Die forgings; Transverse
	379 MPa @Thickness 50.83 - 102 mm	55000 psi @Thickness 2.001 - 4.00 in	Die forgings; Transverse
	386 MPa @Thickness <=50.8 mm	56000 psi @Thickness <=2.00 in	Die forgings; Transverse
	405 MPa @Thickness 127.0 - 152 mm	58700 psi @Thickness 5.001 - 6.00 in	Die forgings; Longitudinal
	414 MPa @Thickness 101.6 - 127 mm	60000 psi @Thickness 4.001 - 5.00 in	Die forgings; Longitudinal
	421 MPa @Thickness 50.83 - 102 mm	61100 psi @Thickness 2.001 - 4.00 in	Die forgings; Longitudinal
	427 MPa @Thickness <=50.8 mm	61900 psi @Thickness <=2.00 in	Die forgings; Longitudinal
Elongation at Break	3.0 % @Thickness 101.6 - 127 mm	3.0 % @Thickness 4.001 - 5.00 in	Die forgings; Transverse
	3.0 % @Thickness 127.0 - 152 mm	3.0 % @Thickness 5.001 - 6.00 in	Die forgings; Transverse
	4.0 % @Thickness 50.83 - 102 mm	4.0 % @Thickness 2.001 - 4.00 in	Die forgings; Transverse
	5.0 % @Thickness <=50.8 mm	5.0 % @Thickness <=2.00 in	Die forgings; Transverse
	7.0 % @Thickness <=50.8 mm	7.0 % @Thickness <=2.00 in	Die forgings; Longitudinal
	7.0 % @Thickness 50.83 - 102 mm	7.0 % @Thickness 2.001 - 4.00 in	Die forgings; Longitudinal
	7.0 % @Thickness 101.6 - 127 mm	7.0 % @Thickness 4.001 - 5.00 in	Die forgings; Longitudinal
	7.0 % @Thickness 127.0 - 152 mm	7.0 % @Thickness 5.001 - 6.00 in	Die forgings; Longitudinal
Compressive Yield Strength	372 MPa @Thickness 127.0 - 152 mm	54000 psi @Thickness 5.001 - 6.00 in	Die forgings; Transverse
	379 MPa @Thickness 101.6 - 127 mm	55000 psi @Thickness 4.001 - 5.00 in	Die forgings; Transverse
	393 MPa @Thickness 76.23 - 102 mm	57000 psi @Thickness 3.001 - 4.00 in	Die forgings; Transverse
	400 MPa @Thickness <=50.8 mm	58000 psi @Thickness <=2.00 in	Die forgings; Transverse
	427 MPa @Thickness 127.0 - 152 mm	61900 psi @Thickness 5.001 - 6.00 in	Die forgings; Longitudinal
	434 MPa @Thickness <=50.8 mm	62900 psi @Thickness <=2.00 in	Die forgings; Longitudinal
	434 MPa @Thickness 50.83 - 102 mm	62900 psi @Thickness 2.001 - 4.00 in	Die forgings; Longitudinal
	434 MPa @Thickness 101.6 - 127 mm	62900 psi @Thickness 4.001 - 5.00 in	Die forgings; Longitudinal
Bearing Yield Strength	538 MPa @Thickness 127.0 - 152 mm	78000 psi @Thickness 5.001 - 6.00 in	Die forgings; e/d=1.5
	545 MPa @Thickness 101.6 - 127 mm	79000 psi @Thickness 4.001 - 5.00 in	Die forgings; e/d=1.5
	558 MPa @Thickness 50.83 - 102 mm	80900 psi @Thickness 2.001 - 4.00 in	Die forgings; e/d=1.5
	565 MPa @Thickness <=50.8 mm	81900 psi @Thickness <=2.00 in	Die forgings; e/d=1.5
	634 MPa @Thickness 127.0 - 152 mm	92000 psi @Thickness 5.001 - 6.00 in	Die forgings; e/d=2.0
	641 MPa @Thickness 101.6 - 127 mm	93000 psi @Thickness 4.001 - 5.00 in	Die forgings; e/d=2.0
	655 MPa @Thickness 76.23 - 102 mm	95000 psi @Thickness 3.001 - 4.00 in	Die forgings; e/d=2.0
	662 MPa @Thickness <=50.8 mm	96000 psi @Thickness <=2.00 in	Die forgings; e/d=2.0
	669 MPa @Thickness 101.6 - 127 mm	97000 psi @Thickness 4.001 - 5.00 in	Die forgings; e/d=1.5; Ultimate
	669 MPa @Thickness 127.0 - 152 mm	97000 psi @Thickness 5.001 - 6.00 in	Die forgings; e/d=1.5; Ultimate
	676 MPa @Thickness 50.83 - 102 mm	98000 psi @Thickness 2.001 - 4.00 in	Die forgings; e/d=1.5; Ultimate
	683 MPa @Thickness <=50.8 mm	99100 psi @Thickness <=2.00 in	Die forgings; e/d=1.5; Ultimate
	876 MPa @Thickness 101.6 - 127 mm	127000 psi @Thickness 4.001 - 5.00 in	Die forgings; e/d=2.0; Ultimate
	876 MPa @Thickness 127.0 - 152 mm	127000 psi @Thickness 5.001 - 6.00 in	Die forgings; e/d=2.0; Ultimate
	889 MPa @Thickness 76.23 - 102 mm	129000 psi @Thickness 3.001 - 4.00 in	Die forgings; e/d=2.0; Ultimate
	903 MPa @Thickness <=50.8 mm	131000 psi @Thickness <=2.00 in	Die forgings; e/d=2.0; Ultimate
Shear Strength	283 MPa @Thickness 50.83 - 102 mm	41000 psi @Thickness 2.001 - 4.00 in
	283 MPa @Thickness 101.6 - 127 mm	41000 psi @Thickness 4.001 - 5.00 in
	283 MPa @Thickness 127.0 - 152 mm	41000 psi @Thickness 5.001 - 6.00 in
	290 MPa @Thickness <=50.8 mm	42100 psi @Thickness <=2.00 in

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000416 ohm-cm @Temperature 20.0 °C	0.00000416 ohm-cm @Temperature 68.0 °F	AA; Typical

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
Thermal Conductivity	157 W/m-K	1090 BTU-in/hr-ft²-°F	AA; Typical at 77°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.

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MA7050T74 / 9576

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