Aluminum 2011-T8

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Aluminum 2011-T8
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy
Material Notes:	Information provided by Alcoa and the references. General 2011 characteristics and uses: Good machinability, especially free-cutting qualities, good mechanical properties. Excellent surface finish capability. The T451 temper offers good deep drilling characteristics. Uses: Adapters, carburetor parts, clock parts and gears, knobs, camera parts, meter shafts and gears, nozzles, pencil and pen parts, oil line filters, pipe stems and filters, radio parts, screwdriver caps, spindles, telephone parts, TV fittings, tripod fittings, machine parts, hose parts, pipe stems. 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 2011-T8; UNS A92011; QQ-A-225/3; NF A-U4Pb (France); DIN AlCuBiPb; BS FC1; AA2011-T8; Al2011-T8
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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	100	100	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	126	126	Converted from Brinell Hardness Value
Hardness, Rockwell A	41.4	41.4	Converted from Brinell Hardness Value
Hardness, Rockwell B	63	63	Converted from Brinell Hardness Value
Hardness, Vickers	112	112	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	407 MPa	59000 psi	AA; Typical
	>= 370 MPa @Thickness 3.17 - 82.5 mm	>= 53700 psi @Thickness 0.125 - 3.25 in	Rolled or cold finished wire, rod, and bar
Tensile Strength, Yield	310 MPa	45000 psi	AA; Typical
	>= 275 MPa @Thickness 3.17 - 82.5 mm	>= 39900 psi @Thickness 0.125 - 3.25 in	Rolled or cold finished wire, rod, and bar
Elongation at Break	>= 10 % @Thickness 3.17 - 82.5 mm	>= 10 % @Thickness 0.125 - 3.25 in	Rolled or cold finished wire, rod, and bar
	12 % @Diameter 12.7 mm	12 % @Diameter 0.500 in	AA; Typical
Modulus of Elasticity	70.3 GPa	10200 ksi	AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poissons Ratio	0.33	0.33
Fatigue Strength	124 MPa @# of Cycles 5.00e+8	18000 psi @# of Cycles 5.00e+8	completely reversed stress; RR Moore machine/specimen
Machinability	90 %	90 %	0-100 Scale of Aluminum Alloys
Shear Modulus	26.0 GPa	3770 ksi
Shear Strength	241 MPa	35000 psi	AA; Typical

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000382 ohm-cm @Temperature 20.0 °C	0.00000382 ohm-cm @Temperature 68.0 °F	AA; Typical

Thermal Properties	Metric	English	Comments
CTE, linear	21.4 µm/m-°C @Temperature -50.0 - 20.0 °C	11.9 µin/in-°F @Temperature -58.0 - 68.0 °F
	22.9 µm/m-°C @Temperature 20.0 - 100 °C	12.7 µin/in-°F @Temperature 68.0 - 212 °F	AA; Typical; average over range
	24.0 µm/m-°C @Temperature 20.0 - 200 °C	13.3 µin/in-°F @Temperature 68.0 - 392 °F
	25.0 µm/m-°C @Temperature 20.0 - 300 °C	13.9 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.880 J/g-°C	0.210 BTU/lb-°F	Estimated from trends in similar Al alloys.
Thermal Conductivity	171 W/m-K	1190 BTU-in/hr-ft²-°F	AA; Typical at 77°F
Melting Point	540.6 - 643 °C	1005 - 1190 °F	AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Eutectic melting can be eliminated by homogenization.
Solidus	540.6 °C	1005 °F	AA; Typical
Liquidus	643 °C	1190 °F	AA; Typical

Processing Properties	Metric	English	Comments
Annealing Temperature	413 °C	775 °F
Solution Temperature	524 °C	975 °F
Aging Temperature	160 °C	320 °F	14 hr at temperature

Component Elements Properties	Metric	English	Comments
Aluminum, Al	91.2 - 94.6 %	91.2 - 94.6 %	As remainder
Bismuth, Bi	0.20 - 0.60 %	0.20 - 0.60 %
Copper, Cu	5.0 - 6.0 %	5.0 - 6.0 %
Iron, Fe	<= 0.70 %	<= 0.70 %
Lead, Pb	0.20 - 0.60 %	0.20 - 0.60 %
Other, each	<= 0.05 %	<= 0.05 %
Other, total	<= 0.15 %	<= 0.15 %
Silicon, Si	<= 0.40 %	<= 0.40 %
Zinc, Zn	<= 0.30 %	<= 0.30 %

References for this datasheet.

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MA2011T8 / 8836

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