Aluminum 2091-T8x, 10% cold work

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Aluminum 2091-T8x, 10% cold work
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 2000 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 information provided by the Aluminum Association and is not for design.
Key Words:	Aluminium 2091-T8x; AlLi; Aluminum Lithium Alloy; AA2091-T8; UNS A92091; Al2091-T8x
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Physical Properties	Metric	English	Comments

Density	2.58 g/cc	0.0932 lb/in³	AA; Typical

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	120	120	500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop	150	150	Converted from Brinell Hardness Value
Hardness, Rockwell A	47	47	Converted from Brinell Hardness Value
Hardness, Rockwell B	75	75	Converted from Brinell Hardness Value
Hardness, Vickers	137	137	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	460 MPa	66700 psi
Tensile Strength, Yield	410 MPa	59500 psi
Elongation at Break	12 %	12 %
Modulus of Elasticity	75.0 GPa	10900 ksi
Shear Strength	270 MPa	39200 psi	Calculated value.

Thermal Properties	Metric	English	Comments
CTE, linear	23.9 µm/m-°C @Temperature 20.0 - 100 °C	13.3 µin/in-°F @Temperature 68.0 - 212 °F
Specific Heat Capacity	0.860 J/g-°C @Temperature 100 °C	0.206 BTU/lb-°F @Temperature 212 °F
Thermal Conductivity	84.0 W/m-K	583 BTU-in/hr-ft²-°F
Melting Point	560 - 670 °C	1040 - 1240 °F
Solidus	560 °C	1040 °F
Liquidus	670 °C	1240 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	91.9 - 95.4 %	91.9 - 95.4 %	As remainder
Chromium, Cr	<= 0.10 %	<= 0.10 %
Copper, Cu	1.8 - 2.5 %	1.8 - 2.5 %
Iron, Fe	<= 0.30 %	<= 0.30 %
Lithium, Li	1.7 - 2.3 %	1.7 - 2.3 %
Magnesium, Mg	1.1 - 1.9 %	1.1 - 1.9 %
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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MA2091T8A / 8901

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