Aluminum 8090-T81

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Aluminum 8090-T81
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; Other Wrought Al 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 information provided by the Aluminum Association and is not for design.
Key Words:	Aluminium 8090-T81; AlLi; Aluminum Lithium Alloy; AA8090-T852; UNS A98090; Al8090-T81
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Physical Properties	Metric	English	Comments

Density	2.54 g/cc	0.0918 lb/in³	AA; Typical

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	116	116	500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop	145	145	Converted from Brinell Hardness Value
Hardness, Rockwell A	45.9	45.9	Converted from Brinell Hardness Value
Hardness, Rockwell B	73	73	Converted from Brinell Hardness Value
Hardness, Vickers	137	137	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	440 MPa	63800 psi
Tensile Strength, Yield	340 MPa	49300 psi
Elongation at Break	12 %	12 %	In 5 cm
Modulus of Elasticity	77.0 GPa	11200 ksi
Fatigue Strength	100 MPa @# of Cycles 5.00e+7	14500 psi @# of Cycles 5.00e+7
	150 MPa @# of Cycles 5.00e+7	21800 psi @# of Cycles 5.00e+7
Fracture Toughness	85.0 MPa-m½	77.4 ksi-in½	Kc in T-L direction
	165 MPa-m½	150 ksi-in½	Kc in L-T direction.
Shear Strength	260 MPa	37700 psi	Calculated value.

Thermal Properties	Metric	English	Comments
CTE, linear	21.4 µm/m-°C @Temperature 20.0 - 100 °C	11.9 µin/in-°F @Temperature 68.0 - 212 °F
Specific Heat Capacity	0.930 J/g-°C @Temperature 100 °C	0.222 BTU/lb-°F @Temperature 212 °F
Thermal Conductivity	95.3 W/m-K	661 BTU-in/hr-ft²-°F
Melting Point	600 - 655 °C	1110 - 1210 °F
Solidus	600 °C	1110 °F
Liquidus	655 °C	1210 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	93 - 96.2 %	93 - 96.2 %	As remainder
Chromium, Cr	<= 0.10 %	<= 0.10 %
Copper, Cu	1.0 - 1.6 %	1.0 - 1.6 %
Iron, Fe	<= 0.30 %	<= 0.30 %
Lithium, Li	2.2 - 2.7 %	2.2 - 2.7 %
Magnesium, Mg	0.60 - 1.3 %	0.60 - 1.3 %
Manganese, Mn	<= 0.10 %	<= 0.10 %
Other, each	<= 0.05 %	<= 0.05 %
Other, total	<= 0.15 %	<= 0.15 %
Silicon, Si	<= 0.20 %	<= 0.20 %
Titanium, Ti	<= 0.10 %	<= 0.10 %
Zinc, Zn	<= 0.25 %	<= 0.25 %
Zirconium, Zr	0.04 - 0.16 %	0.04 - 0.16 %

References for this datasheet.

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MA8090T81 / 9696

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