Alcoa Toolrite 2011®-T8 Aluminum

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Alcoa Toolrite 2011®-T8 Aluminum
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy
Material Notes:	Weldability = D; Stress Corrosion Cracking Resistance = B; General Corrosion Resistance = D (A = best; E = worst). 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 supplied by the manufacturer, Alcoa.
Key Words:	2011-T8 Aluminium; UNS A92011; Alcoa, Aluminum Company of America; AA2011-T8
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Physical Properties	Metric	English	Comments

Density	2.82 g/cc	0.102 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	100	100	500 kg load/10 mm ball
Hardness, Knoop	126	126	Estimated from Brinell
Hardness, Rockwell A	41	41	Estimated from Brinell
Hardness, Rockwell B	63	63	Estimated from Brinell
Hardness, Vickers	112	112	Estimated from Brinell
Tensile Strength, Ultimate	>= 372 MPa	>= 54000 psi
Tensile Strength, Yield	>= 276 MPa	>= 40000 psi	Larger sizes may be lower.
Elongation at Break	10 %	10 %
Modulus of Elasticity	70.0 GPa	10200 ksi
Fatigue Strength	124 MPa @# of Cycles 5.00e+8	18000 psi @# of Cycles 5.00e+8	completely reversed; R. R. Moore Machine and specimen.
Machinability	90 %	90 %	0-100 Scale (A=90; B=70; C=50; D=30; E=10)
Shear Strength	241 MPa	35000 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000380 ohm-cm	0.00000380 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	22.9 µm/m-°C @Temperature 20.0 - 100 °C	12.7 µin/in-°F @Temperature 68.0 - 212 °F	average
Thermal Conductivity	171 W/m-K	1190 BTU-in/hr-ft²-°F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	93.7 %	93.7 %
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 %
Silicon, Si	<= 0.40 %	<= 0.40 %
Zinc, Zn	<= 0.30 %	<= 0.30 %

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