Alclad Aluminum 7178-T6, T651

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Alclad Aluminum 7178-T6, T651
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 7000 Series Aluminum Alloy
Material Notes:	Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN. Composition Notes: Composition for AA 7178 (not Alclad 7178 specifically). Composition information provided by the Aluminum Association and is not for design.
Key Words:	UNS A87178; Alclad 7178-T6, T651; Alclad 7178-T6, T651; Al7178-T6
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Physical Properties	Metric	English	Comments

Density	2.83 g/cc	0.102 lb/in³	For AA7178 (Not Alclad)

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	558 MPa	81000 psi	AA; Typical
Tensile Strength, Yield	490 MPa	71000 psi	AA; Typical
Elongation at Break	10 % @Thickness 1.59 mm	10 % @Thickness 0.0625 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.
Shear Strength	330 MPa	47900 psi	Calculated

Processing Properties	Metric	English	Comments
Annealing Temperature	413 °C	775 °F
Solution Temperature	468 °C	875 °F
Aging Temperature	121 °C	250 °F	for 24 hr

Component Elements Properties	Metric	English	Comments
Aluminum, Al	85.3 - 89.5 %	85.3 - 89.5 %	As remainder
Chromium, Cr	0.18 - 0.28 %	0.18 - 0.28 %
Copper, Cu	1.6 - 2.4 %	1.6 - 2.4 %
Iron, Fe	<= 0.50 %	<= 0.50 %
Magnesium, Mg	2.4 - 3.1 %	2.4 - 3.1 %
Manganese, Mn	<= 0.30 %	<= 0.30 %
Other, each	<= 0.05 %	<= 0.05 %
Other, total	<= 0.15 %	<= 0.15 %
Silicon, Si	<= 0.40 %	<= 0.40 %
Titanium, Ti	<= 0.20 %	<= 0.20 %
Zinc, Zn	6.3 - 7.3 %	6.3 - 7.3 %

References for this datasheet.

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MA7178AT6 / 9618

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